Alert archive / Washington / Areal Flood Advisories in 2013
Areal Flood Advisory 21, NWS Spokane, WA
NWS Spokane, WA issued this areal flood advisory at Sep 4, 2013, 10:09 PM PDT for Spokane County, Washington; Kootenai County, Idaho. It was in force for 111 min.
The area
The counties it named.
The facts
- Issued
- Sep 4, 2013, 10:09 PM PDT (05:09 UTC)
- Expired
- Sep 5, 2013, 12:00 AM PDT
- In force
- 111 min
- Issued by
- NWS Spokane, WA
- Area
- Storm-based polygon
Counties Kootenai County, ID, Spokane County, WA
The radar
The Spokane radar (KOTX), 43 km from the middle of the area, began a volume at 05:08 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 00:00Z, 5.2 hours before the alert went out and 49 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
- 112 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 2305 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood 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 areal flood advisory went out at Sep 4, 9:54 PM PDT, 15 minutes earlier.
Area forecast discussion, Sep 4, 9:54 PM PDT, 15 minutes before
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</html>Hazardous weather outlook, Sep 4, 2:44 PM PDT, 7 hours 25 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPOKANE WA 244 PM PDT WED SEP 4 2013 IDZ001-WAZ037-038-041>044-051500- NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES-OKANOGAN VALLEY- WATERVILLE PLATEAU- 244 PM PDT WED SEP 4 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO... CENTRAL WASHINGTON...NORTH CENTRAL WASHINGTON AND NORTHEAST WASHINGTON. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED THUNDERSTORM ACTIVITY IS EXPECTED THIS AFTERNOON AND INTO THE EARLY EVENING. THEN OVERNIGHT...OCCASIONAL THUNDERSTORM ACTIVITY IS EXPECTED ALONG THE EAST SLOPES OF THE CASCADES...WENATCHEE AREA...WATERVILLE PLATEAU...AND ACROSS THE NORTHERN ZONES FROM THE OKANOGAN VALLEY EAST TO THE NORTHERN PANHANDLE OF IDAHO. THESE STORMS MAY PRODUCE LOCALLY HEAVY RAIN ESPECIALLY IF STORMS DEVELOP AND MOVE OVER THE SAME LOCATIONS. WHILE THE RISK FOR FLASH FLOODING IS NOT HIGH TODAY...LOCALIZED DEBRIS FLOWS ARE POSSIBLE IN BURN SCAR AREAS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE EXPECTED TO DEVELOP ON THURSDAY. SOME STORMS MAY BE STRONG OR SEVERE...PRODUCING LARGE HAIL OR DAMAGING WIND GUSTS. IN ADDITION...THE ATMOSPHERE WILL FAVOR THE POSSIBILITY FOR LOCALIZED FUNNEL CLOUDS OR WEAK SHORT LIVED TORNADOES. THE BEST POTENTIAL WILL BE AWAY FROM THE MOUNTAINS IN THE OPEN TERRAIN. IN ADDITION...SIGNIFICANT RAIN IS EXPECTED WITH THUNDERSTORMS THURSDAY INTO FRIDAY. SOME LOCATIONS COULD PICK UP BETWEEN 1 TO 2 INCHES OF RAIN RESULTING IN THE POTENTIAL FOR FLASH FLOODING WITH THE BEST POTENTIAL IN BURN SCAR AREAS NEAR 2012 AND 2013 WILDFIRES. IDZ002>004-026-027-WAZ031>036-051500- 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- 244 PM PDT WED SEP 4 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO... NORTH CENTRAL IDAHO...EAST CENTRAL WASHINGTON...NORTHEAST WASHINGTON AND SOUTHEAST WASHINGTON. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON...BUT MORE THUNDERSTORMS ARE EXPECTED TO MOVE OUT OF NORTHEAST OREGON INTO SOUTHEAST WASHINGTON...LEWISTON AREA...CAMAS PRAIRIE...AND PALOUSE THIS AFTERNOON BEFORE REACHING THE SPOKANE AND COEUR D'ALENE AREAS TONIGHT. SOME STORMS COULD BE STRONG OR SEVERE PRODUCING DAMAGING WINDS AND ISOLATED LARGE HAIL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE EXPECTED TO DEVELOP ON THURSDAY. SOME STORMS MAY BE STRONG OR SEVERE PRODUCING LARGE HAIL OR DAMAGING WIND GUSTS. IN ADDITION...THE ATMOSPHERE WILL FAVOR THE POSSIBILITY FOR LOCALIZED FUNNEL CLOUDS OR WEAK SHORT LIVED TORNADOES. THE BEST POTENTIAL WILL BE AWAY FROM THE MOUNTAINS IN THE OPEN TERRAIN. HEAVY RAIN COULD RESULT IN URBAN FLOODING WHERE THUNDERSTORMS MOVE OVER CITIES.
In the hours before
Special weather statement, Sep 4, 7:39 PM PDT, 2 hours 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
739 PM PDT WED SEP 4 2013
WAZ032-033-035-050330-
WHITMAN WA-GARFIELD WA-ADAMS WA-
739 PM PDT WED SEP 4 2013
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
SOUTHEASTERN ADAMS COUNTY IN EAST CENTRAL WASHINGTON
SOUTHWESTERN WHITMAN COUNTY IN EASTERN WASHINGTON
NORTHWESTERN GARFIELD COUNTY IN SOUTHEAST WASHINGTON
UNTIL 830 PM PDT
AT 733 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 19 MILES SOUTHEAST
OF CONNELL TO 19 MILES NORTHWEST OF DAYTON TO 6 MILES NORTH OF
DAYTON..AND MOVING EAST AT 30 MPH.
WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.
LOCATIONS IMPACTED INCLUDE...
RURAL SOUTHWESTERN WHITMAN COUNTY...
RURAL NORTHWESTERN GARFIELD COUNTY...
RURAL SOUTHEASTERN ADAMS COUNTY...
LAT...LON 4656 11786 4661 11787 4658 11789 4658 11803
4655 11811 4655 11817 4658 11821 4673 11826
4673 11866 4702 11867 4705 11791 4682 11744
4660 11768 4655 11778
TIME...MOT...LOC 0239Z 252DEG 26KT 4646 11856 4648 11824
4642 11790
FUGAZZISpecial weather statement, Sep 4, 8:33 PM PDT, 1 hour 36 minutes before
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</html>Special weather statement, Sep 4, 8:43 PM PDT, 1 hour 26 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 |
|---|---|---|---|---|
| Sep 4, 7:39 PM PDT | Special Weather Statement | OTX | Adams | 51 min |
| Sep 4, 8:05 PM PDT | Severe Thunderstorm Warning | OTX | Adams, Garfield, Whitman | 40 min |
| Sep 4, 8:43 PM PDT | Special Weather Statement | OTX | Whitman | 47 min |
| Sep 4, 8:33 PM PDT | Special Weather Statement | OTX | Nez Perce | 42 min |
Nearby
Areal Flood Advisories in Washington, 2013Areal Flood Advisories in Idaho, 2013Every areal flood advisory in 2013
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.