Alert archive / Washington / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 20, NWS Spokane, WA
NWS Spokane, WA issued this severe thunderstorm warning at Jul 7, 2012, 7:59 PM PDT for Whitman County, Washington. It was in force for 21 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
- Jul 7, 2012, 7:59 PM PDT (02:59 UTC)
- Expired
- Jul 7, 2012, 8:20 PM PDT
- In force
- 21 min
- Issued by
- NWS Spokane, WA
- Area
- Storm-based polygon
County Whitman County, WA
The radar
The Spokane radar (KOTX), 81 km from the middle of the area, began a volume at 03:02 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, 3.0 hours before the alert went out and 126 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
- 3675 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
711 WUUS56 KOTX 080259 SVROTX WAC075-080330- /O.NEW.KOTX.SV.W.0020.120708T0259Z-120708T0330Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SPOKANE WA 759 PM PDT SAT JUL 7 2012 THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL WHITMAN COUNTY IN EASTERN WASHINGTON... * UNTIL 830 PM PDT * AT 754 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR DUSTY...OR 23 MILES WEST OF PULLMAN...AND MOVING NORTH AT 25 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ENDICOTT...DIAMOND AND STEPTOE PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 4709 11780 4704 11732 4675 11755 4677 11776 TIME...MOT...LOC 0259Z 189DEG 21KT 4685 11763 $$ VAN HORN
1 follow-up statement
879 WWUS56 KOTX 080320 SVSOTX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SPOKANE WA 820 PM PDT SAT JUL 7 2012 WAC075-080330- /O.CAN.KOTX.SV.W.0020.000000T0000Z-120708T0330Z/ WHITMAN WA- 820 PM PDT SAT JUL 7 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WHITMAN COUNTY IS CANCELLED... DOPPLER RADAR INDICATED THE STORM WAS NO LONGER SEVERE AND THE WARNING WAS ALLOWED TO EXPIRE. LAT...LON 4709 11780 4704 11732 4675 11755 4677 11776 TIME...MOT...LOC 0320Z 189DEG 21KT 4697 11760 $$ VAN HORN
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 6:04 PM PDT | Special Weather Statement | OTX | Asotin | 26 min |
| Jul 7, 6:52 PM PDT | Severe Thunderstorm Warning | OTX | Garfield | 38 min |
| Jul 7, 7:27 PM PDT | Severe Thunderstorm Warning | OTX | Whitman | 33 min |
| Jul 8, 6:34 AM PDT | Red Flag Warning | OTX | 40 hr |
Nearby
Severe Thunderstorm Warnings in Washington, 2012Every severe thunderstorm warning in 2012
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.