Alert archive / Wyoming / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 310, NWS Rapid City, SD
NWS Rapid City, SD issued this severe thunderstorm warning at Aug 5, 2011, 5:32 PM MDT for Campbell County, Crook County, Wyoming. It was in force for 58 min. 2 reports 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
- Aug 5, 2011, 5:32 PM MDT (23:32 UTC)
- Expired
- Aug 5, 2011, 6:30 PM MDT
- In force
- 58 min
- Issued by
- NWS Rapid City, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Campbell County, WY, Crook County, WY
The radar
The Rapid City radar (KUDX), 211 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 5, 5:47 PM MDT | HAIL 1 | 9 Nnw Oshoto, WY | |
| Aug 5, 6:00 PM MDT | HAIL 1 | 14 N Weston, WY | QUARTER SIZE HAIL, 3 INCHES DEEP. POKED HOLES IN SIDING AND FACIAL OF HOUSE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 5, 2:55 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 11.5 hours before the alert went out and 209 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
- 1650 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1019 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
380 WUUS53 KUNR 052332 SVRUNR WYC005-011-060030- /O.NEW.KUNR.SV.W.0310.110805T2332Z-110806T0030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RAPID CITY SD 532 PM MDT FRI AUG 5 2011 THE NATIONAL WEATHER SERVICE IN RAPID CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN CAMPBELL COUNTY IN NORTHEASTERN WYOMING... NORTHWESTERN CROOK COUNTY IN NORTHEASTERN WYOMING... * UNTIL 630 PM MDT * AT 529 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 11 MILES SOUTHWEST OF BIDDLE TO WESTON...AND MOVING NORTHEAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... WESTON...CARLILE...OSHOTO...ROCKYPOINT...NEW HAVEN AND LIGHTNING FLAT. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4499 10573 4501 10491 4449 10471 4445 10552 TIME...MOT...LOC 2332Z 215DEG 22KT 4500 10549 4460 10535 WIND...HAIL 60MPH 1.00IN $$ CARPENTER
2 follow-up statements
125 WWUS53 KUNR 060006 SVSUNR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 606 PM MDT FRI AUG 5 2011 WYC005-011-060030- /O.CON.KUNR.SV.W.0310.000000T0000Z-110806T0030Z/ CROOK WY-CAMPBELL WY- 606 PM MDT FRI AUG 5 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN CAMPBELL AND NORTHWESTERN CROOK COUNTIES UNTIL 630 PM MDT... AT 602 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM BIDDLE TO 10 MILES NORTHEAST OF WESTON...MOVING NORTHEAST AT 25 MPH. QUARTER SIZE HAIL COMBINED WITH STRONG WINDS PRODUCED DAMAGE TO A MOBILE HOME IN NORTHEAST CAMPBELL COUNTY. LOCATIONS IMPACTED INCLUDE... NEW HAVEN...ROCKYPOINT AND LIGHTNING FLAT. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS IF YOU ARE IN THE PATH OF THIS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 4499 10573 4501 10491 4449 10471 4445 10552 TIME...MOT...LOC 0006Z 215DEG 22KT 4517 10532 4477 10518 WIND...HAIL 60MPH 1.00IN $$ CARPENTER
018 WWUS53 KUNR 060024 SVSUNR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 624 PM MDT FRI AUG 5 2011 WYC005-011-060033- /O.EXP.KUNR.SV.W.0310.000000T0000Z-110806T0030Z/ CROOK WY-CAMPBELL WY- 624 PM MDT FRI AUG 5 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CAMPBELL AND NORTHWESTERN CROOK COUNTIES WILL EXPIRE AT 630 PM MDT/730 PM CDT/... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED AREA. HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THESE THUNDERSTORMS. IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM MDT. REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL CROOK COUNTY UNTIL 715 PM MDT. LAT...LON 4499 10573 4501 10491 4449 10471 4445 10552 TIME...MOT...LOC 0023Z 215DEG 22KT 4520 10494 4464 10477 $$ CARPENTER
Nearby
Severe Thunderstorm Warnings in Wyoming, 2011Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.