Tag Archives: severe weather

Breaking News, French Toast Emergency, Local, Weather

Update: Excessive Heat Warning extended through Sunday as heatwave continues

[KIRKLAND, Wash.] – (MTN) The National Weather Service extended the Excessive Heat Warning for Western Washington through 9 PM Sunday as a record-breaking heatwave continues to bake the region.

On Tuesday, the temperature reached 94 degrees at Seatac Airport, breaking the previous record of 92. Wednesday’s high reached 91 degrees, and Thursday hit 94. Forecast models are coming into alignment that a 90-plus degree day on Sunday is likely. If the region reaches the mark, it would be the first six-day streak of temperatures 90 or above in modern history.

Friday

Friday is starting off two degrees warmer than the low on Thursday. High temperatures will be 93 to 97 degrees. The dew point at Seatac is rising indicating it will feel more humid than earlier in the week, making today feel more oppressive.

Friday Night

Winds will pick up overnight, with a light breeze providing some relief. Nighttime lows will be 60 to 64.

Saturday

Bright sun and searing temperatures will bake the area for a fifth day. Highs will reach 93 to 97 in the Bellevue-Kirkland-Woodinville area with almost no wind.

Saturday Night

A shift to a more unsettled pattern won’t start on Saturday night, with skies remaining mostly clear. Nighttime lows will be 59 to 63.

Sunday

Clouds won’t roll in with a marine layer push until early on Monday. The region has a very realistic chance of experiencing six days of 90 degrees or hotter in a row since weather records have been kept in Seattle – the Federal Building or Seatac Airport.

High temperatures will be 90 to 94 degrees.

Monday Outlook

A more normal weather pattern will return next week, with a strong marine layer pushing into the region as the thermal trough and the high pressure system slide away. Monday looks to be party to mostly cloudy, with a high of 79 to 83. There will be an offshore flow with winds from 8 to 12 MPH, providing much needed relief.

Due to our unseasonably cold spring and deep snowpack, area rivers, streams, and lakes remain very cold. It is possible to get hypothermia, even on a 90-degree day. Stream flow is also high, so tubers and kayakers should use caution. Currents are faster than usual. Never swim, tube, or boat near downed trees or low head dams; it is very dangerous.

Do not leave pets or children in your car, even for “just a minute.” Temperatures can soar to over 110 degrees in less than 10 minutes, leading to heat stroke or worse.

Regrettably, due to the current COVID BA.5 surge and community spread of monkeypox, people seeking cooler indoor spaces should consider wearing a tight fighting N-95 mask.

Breaking News, French Toast Emergency, Local, Weather

Excessive Heat Warning extended through Saturday as the heatwave continues

[KIRKLAND, Wash.] – (MTN) The National Weather Service extended the Excessive Heat Warning for Western Washington through 9 PM Saturday as a record breaking heatwave continues to bake the region.

On Tuesday the temperature reached 94 degrees at Seatac Airport, breaking the previous record of 92. Wednesday’s high reached 91 degrees. Forecast models are hinting that a high of 90 degrees on Sunday is within reach. If that were to happen, it would be the first six day streak of temperatures 90 or above in modern history.

A thermal trough, high pressure, and light winds have come together to send temperatures west of the Cascades into the 90s and over 100 degrees in the eastern part of the state. Humidity has been a little lower than the initial forecast models, and overnight temperatures have been a few degrees cooler adding a small amount of relief in the morning hours.

Thursday

Clear sunny skies with a light wind from the northwest and north will keep the heat going. The high will reach 89 to 93 degrees through the Bellevue-Kirkland-Woodinville area. Downtown Bellevue and Totem Lake will be the hot spots, while higher spots like Finn Hill and Houghton, as well as along the water, will be a touch cooler.

Thursday Night

Temperatures will stay above 70 until 1 AM to 3 AM, dropping to 6 to 64 degrees close to dawn.

Friday

Friday will be hotter as heat remains entrenched over the region. High temperatures will be 93 to 97 degrees. The models are suggesting that it may be a bit more humid than the previous days, adding a layer of awful for those who don’t have air conditioning.

Friday Night

Winds will pick up overnight, with a light breeze potentially pulling in some marine air. Temperatures will be closer to fine with lows dipping to 60 to 64 degrees around sunrise.

Saturday

Appears to be a near copy of Friday, with just a little less humidity. High temperatures will be 93 to 97 degrees.

Saturday Night

Some clouds start to move in, but not enough to make it mostly or totally cloudy. Lows will be 61 to 65.

Sunday Outlook

Clouds start to move in on Sunday and depending on when they arrive and thicken up will have a significant impact on the high temperature. If they arrive earlier in the day, highs will moderate and be between 85 and 89 degrees. If the clouds arrive later in the day, highs will reach 89 to 93.

Due to our unseasonably cold spring and deep snowpack, area rivers, streams, and lakes remain very cold. It is possible to get hypothermia, even on a 90-degree day. Stream flow is also high, so tubers and kayakers should use caution. Currents are faster than usual. Never swim, tube, or boat near downed trees or low head dams, it is very dangerous.

Do not leave pets or children in your car, even for “just a minute.” Temperatures can soar to over 110 degrees in less than 10 minutes, leading to heat stroke or worse.

Regrettably, due to the current COVID BA.5 surge and community spread of monkeypox, people seeking cooler indoor spaces should consider wearing a tight fighting N-95 mask.

Breaking News, French Toast Emergency, Local, Weather

Excessive Heat Warning for Western Washington as potential record-tying heatwave begins

[KIRKLAND, Wash.] – (MTN) The National Weather Service has issued an Excessive Heat Warning for Western Washington from noon Tuesday to 9 PM Friday for high temperatures over 90 degrees and lows in the mid-60s.

A thermal trough, high pressure, and light winds have come together to send temperatures west of the Cascades into the 90s and over 100 degrees in the eastern part of the state. Temperatures aren’t being pushed up from an on-shore flow off the east slopes, so humidity will be high in Puget Sound, with dew points in the mid-60s through Friday, making it feel hotter than it is.

Tuesday

Clear sunny skies with a light wind from the north and northeast will send temperatures soaring. The high will reach 92 to 96 degrees through the Bellevue-Kirkland-Woodinville area. Downtown Bellevue and Totem Lake will be the hot spots, while higher spots like Finn Hill and Houghton, as well as along the water, will be a touch cooler. The dew point will be in the mid-60s, making it feel like it is 94 to 99 degrees.

Tuesday Night

Temperatures will stay above 80 until 11 PM to midnight and won’t drop below 70 until close to dawn. Lows for the Bellevue-Kirkland-Woodinville area will be 63 to 66.

Wednesday

Hump day looks to be almost identical to Tuesday, with clear skies and little wind. High temperatures will be 93 to 97 degrees. The humidity will make it feel like it is 94 to 99 degrees. There is a small chance for a slight onshore flow to form late in the day. That will drop the dew point. However, it will also hold the temperatures higher later in the day.

Wednesday Night

Temperatures will hold above 70 degrees well into the night, dropping below 70 between 2 AM and 4 AM. Lows will be 63 to 65 around sunrise.

Thursday

The cooler start means a slightly cooler day ahead, but it won’t be much of an improvement. High temperatures will reach 92 to 96 degrees, with the dew point still holding in the mid-60s. It will feel like 93 to 98.

Thursday Night

Right now, this appears to be the most uncomfortable night of the week. Lows will be 64 to 67, with humidity between 80% to 90%. Temperatures won’t drop below 70 degrees until 2 AM to 4 AM.

Friday

On Friday, the thermal trough will start to move, and the high-pressure area will slide a bit more to the east. High temperatures will reach 92 to 95 degrees. It will still feel like it is 94 to 97 degrees, but the shifting weather pattern will cause the humidity level to decrease by sunset.

Friday Night

Temperatures will moderate slightly, but it still won’t fall below 70 degrees until 1 AM to 3 AM. There will be little wind, and the humidity will still be high, with lows falling to 63 to 65 degrees.

Saturday

Saturday could be the day we tie a weather record of five days in a row over 90 degrees. High temperatures will be 89 to 93 degrees under clear skies. The dew point will be between 58 and 61 degrees, given the area the only day that will feel like a “normal” 90-degree day in Western Washington.

The Week Ahead

Sunday looks cooler, but temperatures will still reach 84 to 87, and the overnight lows will still be above 60. By the start of next week, it appears we’ll return to a normal weather pattern of daytime temperatures in the 70s and nighttime temperatures in the high 50s.

Due to our unseasonably cold spring and deep snowpack, area rivers, streams, and lakes remain very cold. It is possible to get hypothermia, even on a 90-degree day. Stream flow is also high, so tubers and kayakers should use caution. Currents are faster than usual. Never swim, tube, or boat near downed trees or low head dams, it is very dangerous.

Do not leave pets or children in your car, even for “just a minute.” Temperatures can soar to over 110 degrees in less than 10 minutes, leading to heat stroke or worse.

Regrettably, due to the current COVID BA.5 surge and community spread of monkeypox, people seeking cooler indoor spaces should consider wearing a tight fighting N-95 mask.

French Toast Emergency, Local, Weather

Sizzling summer temperatures will broil Western Washington during the work week

[KIRKLAND, Wash.] – MTN The average summer Western Washington has been enjoying is about to heat up, with a four-day streak of 90-plus degree weather ahead. A thermal trough, high pressure, and light winds will combine to create a classic Washington summer heat wave.

After 2021, the words “heat wave” may bring back bad memories of three days in a row over 100 degrees – it won’t be that hot. Daytime temperatures will cross 90 degrees Tuesday through Friday, while lows will likely stay in the high 60s. Temperatures won’t drop below 70 until close to sunrise, so there won’t be much overnight relief from the heat.

Sunday

A perfect late-July day awaits the Bellevue-Kirkland-Woodinville area. Skies will be mostly sunny with high temperatures between 80 to 84. Some clouds will start to roll in close to sunset.

Sunday Night

Partly cloudy skies with a light breeze from the northeast with a low of 58 to 61 degrees – perfect sleeping weather.

Monday

It warms up a little more, but the area isn’t roasting yet. Morning clouds will burn off, and the high temperatures will reach 84 to 88 degrees.

Monday Night

High pressure will slide down from British Columbia to our north, and a thermal trough will form overnight. Overnight temperatures will fall to 62 to 64 degrees. On Tuesday, things start to heat up.

Tuesday

Clear sunny skies with a light wind from the north and northeast will send temperatures soaring. The high will reach 90 to 93 degrees through the Bellevue-Kirkland-Woodinville area. Downtown Bellevue and Totem Lake will be the hot spots, while Finn Hill and right along the water might not quite get to 90.

Tuesday Night

Temperatures will stay well into the 70s past midnight before falling to 65 to 67 degrees close to sunrise. Thee won’t be much of a breeze to offer any relief.

Wednesday

The week’s hottest day will get even warmer thanks to a weak easterly flow off the Cascades. High temperatures will be 92 to 96 under clear skies.

Wednesday Night

Temperatures once again will stay well past 70 overnight, falling to 65 to 68 degrees close to sunrise. It will be almost windless, so make sure those fans are ready.

Rest of the Week

On Thursday and Friday, the high-pressure center starts to drift slowly, moderating temperatures a little bit. it is too far out to make an accurate forecast, but models support temperatures reaching 90 to 94 on both days, with lows at night falling to 64 to 67. Friday night might be a little cooler as the high-pressure area starts to move out of our region and the thermal trough breaks up.

Due to our unseasonably cold spring and deep snowpack, area rivers, streams, and lakes remain very cold. It is possible to get hypothermia, even on a 90-degree day. Stream flow is also high, so tubers and kayakers should use caution. Currents are faster than usual. Never swim, tube, or boat near downed trees or low head dams, it is very dangerous.

Do not leave pets or children in your car, even for “just a minute.” Temperatures can soar to over 110 degrees in less than 10 minutes, leading to heat stroke or worse.

If local and county officials believe that there is a heat emergency, cooling centers will be opened. King County, Woodinville, and Kirkland opened cooling centers last year, while Bellevue partnered with area businesses.

Regrettably, due to the current COVID BA.5 surge and community spread of monkeypox, people seeking cooler indoor spaces should consider wearing a tight fighting N-95 mask.

Local, Weather

Soggy, steamy, east coast style weekend ahead

[KIRKLAND] – (MTN) The Seattle area had the fourth driest spring in history, and it appears that the region will make up some of that precipitation deficit this weekend. An unusual weather pattern will bring a Pineapple Express to the Pacific Northwest on Sunday. Sunday will feel more like a rainy March day in Orlando versus our usual June gloom.

Two rare events are coming together to turn Seattle from Fifty Shades of Grey to Sixty Shades of Sticky. Pineapple Express weather systems are more associated with wintertime storms carrying tropical moisture on a conveyor belt straight to the Pacific Northwest. These systems bring heavy rains, breezy conditions, and warmer temperatures.

Sunday’s weather models shows a river of moisture extending from Hawaii to the Pacific Northwest

Usually, when we warm up in Seattle, it is from an eastern flow from the Cascades. The air compresses and gets warmer, squeezing out the moisture at the same time. Our hottest days typically have low humidity, so we get a “dry heat” in the lowlands to make it feel more tolerable. These same easterly flows dry out our air, preventing rain from falling.

In more recent years, we have gotten hot days from warm air coming from the southwestern United States, which is happening this weekend.

In reviewing the weather models, there is agreement on when and where but disagreement on how much rain. There is widespread agreement that southwest Washington and the Olympics will get significant rain on Sunday morning and the Cascades later in the day as the system makes landfall. One model predicts widespread record rainfall for Seattle, with the potential for one inch of rain – average rainfall for June is 1.57 inches! 

For the rest of Friday, our area will see a typical Juneuary day of clouds, rain showers, and sun breaks. High temperatures will struggle to reach 58 to 62 in the Kirkland-Bellevue-Woodinville area. The wettest period will be between 2 PM and 4 PM.

Friday night could bring some more light showers into the area, with lows from 52 to 54 degrees.

Saturday is looking pleasant, although partly to mostly cloudy. Highs will be 73 to 78, depending on what time the cloud cover starts to thicken up for the main event. It won’t feel sticky, but you may think to yourself, “this feels warmer than the 70s.”

Saturday night and early Sunday morning, the Pineapple Express arrives. Models are predicting rain will increase from 3 AM to 5 AM. Low temperatures will only drop to around 60 degrees, and dew points will creep into to 60s.

Sunday will see variable amounts of rain. Heavy rain showers will form with a chance for some grumbles of thunder. In the heaviest pockets, there could be minor street flooding and reduced visibility. Temperatures will hover around 70 degrees, while the dew point could reach 67. Your friends and family on the east coast won’t offer any sympathy if you call and complain about it being muggy, but this is a rare event for Puget Sound.

How much rain you will get on Sunday will depend on your location, and weather records will fall if a heavy pocket of rain lingers over the rain gauge at Seattle-Tacoma International Airport. Some areas may see 1/3 to 1/2 an inch of rain, while localized areas could see an inch or more. 

Looking further out, Monday will get a little drier, but the humidity will linger. Tuesday appears to bring a round of spotty showers and thunderstorms to the area before moving back to a dry summertime pattern.

Breaking News, Local

Wind storm moving into Puget Sound for Tuesday

Rain and wind are coming to Puget Sound as another wind storm event approaches the area. The National Weather Service has issued a Wind Advisory for Tuesday, from 8 AM to 5 PM. The official forecast predicts south winds, typically for a northern tracking storm, from 25 to 35 MPH with gusts to 50 MPH.

This particular system won’t be a significant rainmaker by November standards, with .25 to .30 inches of rain expected. Wind will arrive around 10 AM to noon on Tuesday, with the east side seeing the forecast model’s lower range.

Residents should prepare for power outages, especially in the areas commonly impacted, such as Finn Hill in Kirkland. Because most residents panic bought everything that wasn’t nailed down in the stores yesterday, everyone is already well-stocked with their French Toast supplies!

Terra Firma

Hurricane Iota targets Nicaragua

The 2020 Atlantic Hurricane Season continues unabated as the historic 30th named storm, Iota, targets Nicaragua and Honduras, only two weeks after Eta slammed the same region. In the latest update from the National Hurricane Center, Iota is 235 miles east-southeast of Cabo Gracias a Dios packing 105 MPH winds as a Category II storm. Forecasters expect Iota to pass over Isla de Providencia, Columbia overnight.

Forecast models predict that Iota will make landfall on Monday night in Nicaragua as a Category IV storm with 140 MPH winds. Hurricane Warnings extended from Isla de Providencia, most of the Caribbean coastline of Nicaragua and Honduras. Models indicate Iota will drift across Central America before dissipating over El Salvador by the middle of the week.

Many of the forecast models for 2020 have been conservative. When Eta struck Nicaragua, it was forecasted to arrive as a Category III storm. Instead, it roared ashore with 150 MPH winds as a strong Category IV storm. Two weeks ago, over 150 fatalities were reported from Mexico to Belize from flooding and mudslides. The Nicaraguan coastline residents are still waiting for aid from the Ortega-led government with their lives and homes shattered.

The 2020 Atlantic Hurricane season has been unprecedented, producing 30 named storms so far, with 12 systems making landfall on the United States. Iota is not expected to be a threat to the United States or be a rare “cross-over” storm that reforms with tropical characteristics when it reaches the Pacific.

National, Terra Firma

[Updated] Meandering Hurricane Eta targets Florida

UPDATE: Eta has weakened to a tropical storm again, with winds of 70 MPH. The center of Eta is 85 miles southwest of Tampa Florida, moving north at 10 MPH. Tropical Storm Warnings now extend from Bonita Beach to Suwannee River, Florida.

Eta restrengthened to a Category I hurricane overnight and appeared to have picked a path. Packing winds of 75 MPH, Eta was located 145 miles south-southwest of Tampa and heading toward the big bend region of the western Florida coast. Overnight, Eta formed a well-developed eye, but wind shear and relatively dry air will make further strengthening difficult.

Since its formation in late October, Eta has impacted Mexico, Nicaragua, Honduras, Guatemala, Belize, Cuba, and the United States. Last week, Eta slammed into Central America, delivering 140 MPH winds, 18 feet storm surge, flooding, mudslides, and misery. Over 150 deaths were reported across the region, with more people missing.

Forecasters have not declared hurricane watches or warnings, but they are expected later today. Tropical Storm Theta continued to move east in the Atlantic with 60 MPH winds and posed no threat to land. A tropical wave located southwest of the Dominican Republic was expected to form into a tropical depression. If that system reaches tropical storm strength, it would become the 30th named storm of 2020 and represent the first time three named systems were in the Atlantic basin this late in a hurricane season.

National, Terra Firma

Tropical Storm Theta shatters single season hurricane record

Tropical Storm Theta became the 29th named storm of the 2020 Atlantic Hurricane Season, shattering all previous records going back to 1850. Located 795 miles southwest of the Azores with winds of 70 MPH, Theta is not a threat to land and forecasted to weaken over the next five days.

The 2020 Atlantic Hurricane Season has been the most active in history, with 12 named storms making United States landfall so far. Late Sunday, Tropical Storm Eta passed over the Florida Keys, bringing torrential rains and flash floods. In addition to Theta and Eta, the National Hurricane Center is watching a tropical wave in the southern Caribbean.

Tropical Storm Eta is almost stationary off the western tip of Cuba. Forecasters currently believe that Eta will struggle to become a hurricane again while remaining a threat from Alabama to Florida.

Local, Terra Firma, Weather

Significant weather event likely on Friday the 13th

The remnants of Tropical Storm Atsani is charging across the Pacific Ocean, on a collision course with the Pacific Northwest. Although Atsani lost all tropical characteristics days ago, the energy and moisture it collected are expected to arrive Friday in a two-day weather event.

The challenge in forecasting wind storms in western Washington is that the center of circulation’s location determines our region’s impact. If the storm passes to our north, close to the southern tip of Vancouver Island in British Columbia, we get the brunt of a wind event. If the storm passes to our south, up the Columbia River basin, Oregon receives the brunt of the wind. An error in the forecasted path of just 50 miles is the difference between a significant wind event and what we like to call “a nothing burger.”

Typically the computer models aren’t in agreement on the “where,” which is the case with the Friday forecast. The GFS model, which hasn’t been the most accurate for our winter weather, forecasts a significant, possibly historic wind event, with the storm passing over Vancouver Island. The Euro model, which was stellar a few years ago but has lost some accuracy, predicts Oregon will receive the most impact.

It is too far out with landfall still 72 hours away to narrow down the track, but here is what we do know. Forecast models put central pressure at landfall between 973 and 983 millibars – that is significantly more intense than Tropical Storm Eta when it crossed the Florida Keys. Barometric pressure this low is typically associated with Category I and Category II hurricanes (our November wind storms have nothing related to the mechanics of a tropical system, even if they are often the remnants of tropical systems).

Wave height forecasts for Friday and Saturday are, in a word, alarming. Some computer models forecast heights of 45 feet off the Oregon coast, with some models predicting higher than 50 feet.

What should you know? For central Puget Sound, there is growing potential for a significant weather event on Friday and Saturday. More specifically to the eastside, the chances for power loss, tree, and property damage is increasing and require a close watch. Along the coast, damaging waves that will cause low area flooding, erosion, and large debris to wash ashore and shift are likely, with the where being the bigger question. The Cascades can expect wind and mountain snow, and a lot of it. The storm track will determine the snow level, but anyone planning to cross the passes this weekend should consider leaving a day early.

Opening the new SH-520 bridge to relieve wind and wave stress is no longer required, and the latest design also prevents waves from over-topping the railings. Also, with reduced traffic in general due to COVID-19, regional travel shouldn’t be too challenging during the evening commute.

The weather model we prefer? That model shows the storm passing to our north but at the lower end of the strength forecast. We will continue to update this growing situation.