Alert archive / Idaho / Winter Storm Watches in 2011
Winter Storm Watch 11, NWS Spokane, WA
NWS Spokane, WA issued this winter storm watch at Nov 17, 2011, 10:27 AM PST for 4 counties in Washington; 6 counties in Idaho. It took effect at Nov 18, 2011, 12:00 AM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Nov 17, 2011, 10:27 AM PST (18:27 UTC)
- In effect from
- Nov 18, 2011, 12:00 AM PST
- Expired
- Nov 17, 2011, 6:18 PM PST
- In force
- Issued by
- NWS Spokane, WA
Counties Benewah County, ID, Bonner County, ID, Boundary County, ID, Kootenai County, ID, Latah County, ID, Shoshone County, ID, Lincoln County, WA, Pend Oreille County, WA, Spokane County, WA, Stevens County, WA
The radar
The Spokane radar (KOTX), 50 km from the middle of the area, began a volume at 18:26 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
Spokane, WA (KOTX), launched 12:00Z, 6.5 hours before the alert went out and 47 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 513 m above ground
- 0-6 km bulk shear
- 88 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm watch 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 winter storm watch went out at Nov 17, 9:20 AM PST, 1 hour 7 minutes earlier.
Area forecast discussion, Nov 17, 9:20 AM PST, 1 hour 7 minutes before
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</html>Hazardous weather outlook, Nov 17, 6:09 AM PST, 4 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPOKANE WA 609 AM PST THU NOV 17 2011 IDZ001-004-181415- NORTHERN PANHANDLE-CENTRAL PANHANDLE MOUNTAINS- 609 AM PST THU NOV 17 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO. .DAY ONE...TODAY AND TONIGHT A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST. LINGERING BUT DECREASING HEAVY SNOW ACCUMULATIONS ARE LIKELY THIS MORNING IN THE MOUNTAINS OF NORTH IDAHO...WITH STORM TOTAL SNOWS OF 6 TO 12 INCHES. THE HEAVY SNOW ACCUMULATIONS HAVE ENDED FOR THE VALLEYS HOWEVER. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY MORE HEAVY SNOW ACCUMULATIONS WILL BE POSSIBLE FRIDAY...FOLLOWED BY SHARPLY COLDER TEMPERATURES FOR THE WEEKEND. IDZ002-003-026-027-WAZ031>038-041>044-181415- COEUR D'ALENE AREA-IDAHO PALOUSE-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-WENATCHEE AREA- EAST SLOPES NORTHERN CASCADES-OKANOGAN VALLEY-WATERVILLE PLATEAU- 609 AM PST THU NOV 17 2011 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 GUSTY WINDS UP TO 35 MPH IN THE LOWER ELEVATIONS...AND AROUND 50 MPH IN THE MOUNTAINS WILL BE LIKELY TODAY. IN ADDITION...LINGERING SNOW SHOWERS WILL PRODUCE LOCALIZED SIGNIFICANT ACCUMULATIONS NEAR THE CASCADE CREST WEST OF A LINE FROM PLAIN TO LAKE CHELAN TODAY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ANOTHER ROUND OF SNOW IS EXPECTED ON FRIDAY WITH LIGHT TO MODERATE ACCUMULATIONS IN THE SPOKANE...PULLMAN...MOSES LAKE...WENATCHEE... AND LEWISTON AREAS. HEAVY SNOW ACCUMULATIONS ARE POSSIBLE FOR ALL MOUNTAINS. SHARPLY COLDER TEMPERATURES ARE EXPECTED THIS WEEKEND.
In the hours before
Local storm report, Nov 17, 7:28 AM PST, 2 hours 59 minutes before
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</html>Local storm report, Nov 17, 8:37 AM PST, 1 hour 50 minutes before
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</html>The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 17, 2:50 PM PST | Winter Storm Warning | OTX | Lincoln, Pend Oreille, Spokane, Stevens | 31 hr |
Nearby
Winter Storm Watches in Idaho, 2011Winter Storm Watches in Washington, 2011Every winter storm watch in 2011
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.