Alert archive / Washington / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 24, NWS Spokane, WA
NWS Spokane, WA issued this severe thunderstorm warning at Jul 15, 2012, 2:38 PM PDT for Okanogan County, Washington. It was in force for 36 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 15, 2012, 2:38 PM PDT (21:38 UTC)
- Expired
- Jul 15, 2012, 3:14 PM PDT
- In force
- 36 min
- Issued by
- NWS Spokane, WA
- Area
- Storm-based polygon
County Okanogan County, WA
The radar
The Spokane radar (KOTX), 171 km from the middle of the area, began a volume at 21:42 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 15, 3:00 PM PDT | HAIL 1 | 5 Ne Loup Loup Campgrou, WA | NORTH SIDE OF BUCK MOUNTAIN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 9.6 hours before the alert went out and 257 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
- 305 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1372 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
127
WUUS56 KOTX 152138
SVROTX
WAC047-152230-
/O.NEW.KOTX.SV.W.0024.120715T2138Z-120715T2230Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
238 PM PDT SUN JUL 15 2012
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
OKANOGAN COUNTY IN NORTH CENTRAL WASHINGTON...
THIS INCLUDES THE CITY OF OMAK...
* UNTIL 330 PM PDT
* AT 233 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES
SOUTH OF OKANOGAN...OR 9 MILES SOUTH OF OMAK...AND MOVING NORTHEAST
AT 15 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
OKANOGAN...CONCONULLY...OMAK...RIVERSIDE...COULEE DAM...ELMER
CITY...LOST LAKE CAMPGROUND...BONAPARTE LAKE CAMPGROUND...
WAUCONDA...TONASKET...OROVILLE...NIGHTHAWK...NESPELEM...MOLSON...
LOOMIS...ELLISFORDE...DISAUTEL AND CHESAW
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM WILL ALSO PRODUCE EXTREMELY HEAVY RAINFALL. IF DRIVING
THROUGH THE STORM REDUCE YOUR SPEED TO LOWER THE RISK OF
HYDROPLANING. ALSO BE PREPARED FOR PONDING OF WATER IN LOW LYING
AREAS.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
&&
LAT...LON 4900 11884 4796 11885 4796 11886 4795 11898
4802 11895 4815 11913 4811 11932 4805 11934
4808 11950 4800 11962 4810 11977 4805 11989
4796 11988 4797 12007 4840 12065 4854 12065
4863 12079 4873 12066 4894 12076 4898 12088
TIME...MOT...LOC 2138Z 237DEG 13KT 4829 11950
$$
TY2 follow-up statements
698 WWUS56 KOTX 152143 SVSOTX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SPOKANE WA 243 PM PDT SUN JUL 15 2012 WAC047-152230- /O.CON.KOTX.SV.W.0024.000000T0000Z-120715T2230Z/ OKANOGAN WA- 243 PM PDT SUN JUL 15 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM PDT FOR EAST CENTRAL OKANOGAN COUNTY... AT 240 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHEAST OF OKANOGAN...OR 8 MILES SOUTH OF OMAK...MOVING NORTHEAST AT 15 MPH. IN ADDITION TO THE LARGE HAIL AND WIND... DANGEROUS LIGHTNING AND TORRENTIAL RAINFALL CAN BE EXPECTED. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DISAUTEL. LAT...LON 4869 11932 4837 11884 4820 11945 4833 11968 TIME...MOT...LOC 2142Z 237DEG 13KT 4830 11948 $$ TY
551 WWUS56 KOTX 152214 SVSOTX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SPOKANE WA 314 PM PDT SUN JUL 15 2012 WAC047-152218- /O.CAN.KOTX.SV.W.0024.000000T0000Z-120715T2230Z/ OKANOGAN WA- 314 PM PDT SUN JUL 15 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL OKANOGAN COUNTY IS CANCELLED... THUNDERSTORMS CONTINUE TO SLOWLY WEAKEN IN THE WARNED AREA...THOUGH WIND GUSTS TO 35 MPH...HEAVY DOWNPOURS AND PONDING OF WATER WILL STILL BE LIKELY. LAT...LON 4869 11932 4837 11884 4820 11945 4833 11968 TIME...MOT...LOC 2208Z 237DEG 13KT 4835 11936 $$
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 6:00 PM PDT | Areal Flood Advisory | OTX | Douglas, Grant | 45 min |
| Jul 14, 7:55 PM PDT | Special Weather Statement | OTX | Whitman | 35 min |
| Jul 14, 8:30 PM PDT | Special Weather Statement | OTX | Whitman | 45 min |
| Jul 14, 8:36 PM PDT | Areal Flood Advisory | OTX | Adams, Lincoln | 2 hr |
| Jul 14, 9:44 PM PDT | Flash Flood Watch | OTX | Ferry, Lincoln, Okanogan, Pend Oreille, Spokane, Stevens | 24 hr |
| Jul 15, 11:13 AM PDT | Special Weather Statement | OTX | Okanogan | 47 min |
| Jul 15, 11:21 AM PDT | Special Weather Statement | OTX | Okanogan | 39 min |
| Jul 15, 12:20 PM PDT | Areal Flood Advisory | OTX | Okanogan | 3 hr |
| Jul 15, 1:29 PM PDT | Severe Thunderstorm Warning | OTX | Ferry, Okanogan | 46 min |
| Jul 15, 1:56 PM PDT | Areal Flood Advisory | OTX | Chelan, Douglas, Ferry, Okanogan | 5 hr |
| Jul 15, 2:11 PM PDT | Severe Thunderstorm Warning | OTX | Ferry | 49 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.