Alert archive / Washington / Heat Advisories in 2015
Heat Advisory 4, NWS Spokane, WA
NWS Spokane, WA issued this heat advisory at Aug 11, 2015, 3:37 PM PDT for 4 counties in Washington; 4 counties in Idaho. It took effect at Aug 12, 2015, 12:00 PM PDT. It was in force for 32 hr.
The area
The counties it named.
The facts
- Issued
- Aug 11, 2015, 3:37 PM PDT (22:37 UTC)
- In effect from
- Aug 12, 2015, 12:00 PM PDT
- Expired
- Aug 13, 2015, 8:00 PM PDT
- In force
- 32 hr
- Issued by
- NWS Spokane, WA
Counties Benewah County, ID, Latah County, ID, Lewis County, ID, Nez Perce County, ID, Asotin County, WA, Garfield County, WA, Spokane County, WA, Whitman County, WA
The radar
The Spokane radar (KOTX), 116 km from the middle of the area, began a volume at 22:37 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Boise Airport, ID (KBOI), launched 12:00Z, 10.6 hours before the alert went out and 356 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 8 J/kg
- Mixed-layer CIN
- -593 J/kg
- Mixed-layer LCL
- 2789 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 110 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Spokane, WA wrote its last area forecast discussion before this heat advisory went out at Aug 11, 2:57 PM PDT, 40 minutes earlier.
Area forecast discussion, Aug 11, 2:57 PM PDT, 40 minutes before
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</html>Hazardous weather outlook, Aug 11, 5:32 AM PDT, 10 hours 5 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPOKANE WA 532 AM PDT TUE AUG 11 2015 WAZ041>043-121430- WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES-OKANOGAN VALLEY- 532 AM PDT TUE AUG 11 2015 This Hazardous Weather Outlook is for portions of North Central Washington. .DAY ONE...TODAY AND TONIGHT Isolated thunderstorms are expected...mainly over the mountains. Any lightning from these storms could result in new wild fires. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A low pressure system will set up just offshore the Northwest region through the work week. This will result in an unstable weather pattern across the Inland Northwest with thunderstorms possible each day. Wettest and strongest thunderstorms are expected on Thursday and Friday. This will increase the potential for flash flooding and debris flows for areas in and near recent burn scars. Other potential hazard with thunderstorms this week will include gusty outflow winds and new fire starts from lightning strikes. IDZ001>004-026-027-WAZ031>038-044-121430- NORTHERN PANHANDLE-COEUR D'ALENE AREA-IDAHO PALOUSE- CENTRAL PANHANDLE MOUNTAINS-LEWISTON AREA- LEWIS AND SOUTHERN NEZ PERCE COUNTIES-NORTHEAST BLUE MOUNTAINS- LOWER GARFIELD AND ASOTIN COUNTIES-WASHINGTON PALOUSE- MOSES LAKE AREA-UPPER COLUMBIA BASIN-SPOKANE AREA- NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS-WATERVILLE PLATEAU- 532 AM PDT TUE AUG 11 2015 This Hazardous Weather Outlook is for portions of North Idaho... North Central Idaho...Central Washington...East Central Washington...North Central Washington...Northeast Washington and Southeast Washington. .DAY ONE...TODAY AND TONIGHT Isolated thunderstorms are expected...mainly over the mountains. Any lightning from these storms could result in new wild fires. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY There will be a chance for thunderstorms Wednesday, mainly over the mountains. Wednesday will also be hot with high temperatures warming into the upper 90s to around 100 degrees. Low pressure will move over the region on Thursday and Friday with strong thunderstorms possible over many areas.
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 5:53 PM PDT | Flash Flood Warning | OTX | Shoshone | 3 hr |
| Aug 10, 6:24 PM PDT | Special Weather Statement | OTX | Shoshone | 36 min |
| Aug 10, 9:27 PM PDT | Severe Thunderstorm Warning | OTX | Bonner, Boundary | 48 min |
Nearby
Heat Advisories in Washington, 2015Heat Advisories in Idaho, 2015Every heat advisory in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.