Alert archive / Washington / Flash Flood Warnings in 2011
Flash Flood Warning 2, NWS Spokane, WA
NWS Spokane, WA issued this flash flood warning at Sep 27, 2011, 4:35 PM PDT for Pend Oreille County, Washington; Bonner County, Idaho. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 27, 2011, 4:35 PM PDT (23:35 UTC)
- Expired
- Sep 27, 2011, 5:40 PM PDT
- In force
- 65 min
- Issued by
- NWS Spokane, WA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bonner County, ID, Pend Oreille County, WA
The radar
The Spokane radar (KOTX), 85 km from the middle of the area, began a volume at 23:34 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, 11.6 hours before the alert went out and 82 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
- 653 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
134 WGUS56 KOTX 272335 FFWOTX IDC017-WAC051-280100- /O.NEW.KOTX.FF.W.0002.110927T2335Z-110928T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SPOKANE WA 435 PM PDT TUE SEP 27 2011 THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL PEND OREILLE COUNTY IN NORTHEAST WASHINGTON... WEST CENTRAL BONNER COUNTY IN THE PANHANDLE OF IDAHO... * UNTIL 600 PM PDT * AT 430 PM PDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING FROM A THUNDERSTORM IN THE AREA ABOUT 5 MILES NORTHWEST OF DIAMOND LAKE. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO COOLIN. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND. IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY. && LAT...LON 4849 11682 4831 11664 4810 11732 4821 11739 $$ FRIES
2 follow-up statements
501
WGUS76 KOTX 280007
FFSOTX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
507 PM PDT TUE SEP 27 2011
IDC017-WAC051-280100-
/O.CON.KOTX.FF.W.0002.000000T0000Z-110928T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BONNER ID-PEND OREILLE WA-
507 PM PDT TUE SEP 27 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM PDT FOR
SOUTHEASTERN PEND OREILLE AND WEST CENTRAL BONNER COUNTIES...
AT 430 PM PDT...TRAINED WEATHER SPOTTERS REPORTED A THUNDERSTORM
PRODUCING FLASH FLOODING NORTHWEST OF DIAMOND LAKE. THIS
THUNDERSTORM HAS MAINTAINED ITS INTENSITY AS IT HAS SLOWLY MOVED
NORTH OF NEWPORT AND INTO WESTERN BONNER COUNTY IDAHO.
THIS THUNDERSTORM WITH EXCESSIVE RAIN WILL OTHERWISE REMAIN OVER
MAINLY RURAL AREAS OF THE INDICATED COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
SPOKANE.
&&
LAT...LON 4826 11709 4843 11676 4831 11664 4828 11673
4813 11723
$$
FRIES122
WGUS76 KOTX 280040
FFSOTX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
540 PM PDT TUE SEP 27 2011
IDC017-WAC051-280049-
/O.CAN.KOTX.FF.W.0002.000000T0000Z-110928T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BONNER ID-PEND OREILLE WA-
540 PM PDT TUE SEP 27 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN PEND
OREILLE AND WEST CENTRAL BONNER COUNTIES...
THE SHOWER AND THUNDERSTORM ACTIVITY OVER PEND OREILLE COUNTY
WASHINGTON...AS WELL AS OVER WESTERN BONNER COUNTY IDAHO...HAS
WEAKENED IN THE PAST 30 MINUTES. WHILE MODERATE SHOWERS ARE STILL
LIKELY IN THE NEXT FEW HOURS FROM PRIEST RIVER TO SANDPOINT...NO
ADDITIONAL FLASH FLOODING IS ANTICIPATED AT THIS TIME.
LAT...LON 4826 11709 4843 11676 4831 11664 4828 11673
4813 11723
$$
FRIESNearby
Flash Flood Warnings in Washington, 2011Flash Flood Warnings in Idaho, 2011Every flash flood warning 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.