Alert archive / Wyoming / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS Rapid City, SD
NWS Rapid City, SD issued this severe thunderstorm warning at Jun 13, 2009, 4:37 PM MDT for Campbell County, Wyoming. It was in force for 29 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
- Jun 13, 2009, 4:37 PM MDT (22:37 UTC)
- Expired
- Jun 13, 2009, 5:06 PM MDT
- In force
- 29 min
- Issued by
- NWS Rapid City, SD
- Area
- Storm-based polygon
County Campbell County, WY
The radar
The Rapid City radar (KUDX), 216 km from the middle of the area, began a volume at 22:39 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 10.6 hours before the alert went out and 212 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
- 1311 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KUNR 132237 SVRUNR WYC005-132330- /O.NEW.KUNR.SV.W.0021.090613T2237Z-090613T2330Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RAPID CITY SD 437 PM MDT SAT JUN 13 2009 THE NATIONAL WEATHER SERVICE IN RAPID CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL CAMPBELL COUNTY IN NORTHEASTERN WYOMING... * UNTIL 530 PM MDT * AT 436 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER CENTRAL CAMPBELL COUNTY...OR 18 MILES NORTH OF WRIGHT...AND WAS MOVING NORTHEAST AT 10 MPH. * LOCATIONS IMPACTED INCLUDE... AREAS BETWEEN GILLETTE AND WRIGHT...ALONG AND WEST OF HIGHWAY 59. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...TAKE SHELTER IN A STURDY BUILDING AWAY FROM WINDOWS. && LAT...LON 4406 10532 4393 10566 4401 10576 4421 10563 TIME...MOT...LOC 2236Z 229DEG 10KT 4399 10564 $$ TRIMARCHI
1 follow-up statement
000 WWUS53 KUNR 132306 SVSUNR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 506 PM MDT SAT JUN 13 2009 WYC005-132316- /O.CAN.KUNR.SV.W.0021.000000T0000Z-090613T2330Z/ CAMPBELL WY- 506 PM MDT SAT JUN 13 2009 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CAMPBELL COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER APPEARED TO BE SEVERE...HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4406 10532 4393 10566 4401 10576 4421 10563 TIME...MOT...LOC 2306Z 229DEG 10KT 4404 10555 $$ TRIMARCHI
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Rapid City, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 13, 2:45 PM MDT, 1 hour 52 minutes earlier.
Area forecast discussion, Jun 13, 2:45 PM MDT, 1 hour 52 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 245 PM MDT SAT JUN 13 2009 .DISCUSSION...CURRENT SURFACE ANALYSIS SHOWS A COLD FRONT ACROSS ND...WITH AN AREA OF HIGH PRESSURE CENTERED SOUTHEAST OF THE REGION. UPPER LEVEL ANALYSIS HAS WEAK RIDGING OVER THE SOUTHERN PLAINS INTO THE NORTHERN ROCKIES...WITH UPPER TROF ALONG THE WEST COAST. CLOUDS ARE GRADUALLY INCREASING ACROSS THE AREA...WITH THE MOST CLOUDINESS ACROSS THE BLACK HILLS AND SOUTHWESTERN SD. REGIONAL RADARS SHOWING SHOWERS AND STORMS DEVELOPING ACROSS EASTERN WY...THE NEB PANHANDLE...AND SOUTHWESTERN SD AT THIS TIME. TEMPS ARE IN THE UPPER 60S AND 70S AT MOST LOCATIONS WITH LIGHT SOUTH TO SOUTHEAST WINDS. DAILY CHANCES FOR SHOWERS AND THUNDERSTORMS CAN BE EXPECTED FOR THE NEXT SEVERAL DAYS AS SOUTHWESTERLY FLOW ALOFT BRINGS NUMEROUS DISTURBANCES ACROSS THE REGION. THREAT FOR SEVERE STORMS OVER THE NEXT FEW DAYS WILL BE HIGHEST SUNDAY AFTERNOON AND EVENING... ESPECIALLY ACROSS THE BLACK HILLS AREA. MOIST SOUTH TO SOUTHEASTERLY FLOW AT THE LOW LEVELS WILL ALSO BRING A THREAT FOR HEAVIER RAINFALL FROM SOME STORMS...ESPECIALLY ON SUNDAY. FOR LATE THIS AFTERNOON AND TONIGHT...SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE REGION. THE BETTER CHANCES WILL BE ACROSS NORTHEAST WY AND SOUTHERN SD...WHERE BETTER MOISTURE AND INCREASING UPPER LEVEL SUPPORT WILL BE IN PLACE. A FEW STRONG STORMS ARE LIKELY INTO THIS EVENING...MAINLY ACROSS THE SOUTHWESTERN CWA...WITH A SEVERE STORM OR TWO NOT OUT OF THE QUESTION. INCREASING LOW LEVEL JET ACROSS NORTH CENTRAL NEB AND SOUTH CENTRAL SD COULD ALSO BE A TRIGGER FOR MORE THUNDERSTORM ACTIVITY ACROSS THOSE AREAS OVERNIGHT. LOWS WILL BE MOSTLY IN THE 50S. SOME LINGERING SHOWERS AND STORMS ARE POSSIBLE EARLY SUNDAY ACROSS SOUTHERN AND WESTERN AREAS...BUT MAIN ACTIVITY SHOULD HOLD OFF UNTIL THE AFTERNOON AS INSTABILITY AND ANOTHER SHORTWAVE APPROACH. HIGHS WILL BE IN THE 70S AGAIN. SURFACE LOW WILL DEVELOP ACROSS NORTHEAST WY DURING THE DAY...ALLOWING FOR BREEZY SOUTH TO SOUTHEAST WINDS TO THE EAST OF THE LOW. BETTER INSTABILITY WILL BE JUST EAST OF THE LOW ACROSS FAR NORTHEAST WY AND WESTERN SD ALONG WITH GOOD VERTICAL AND SPEED SHEAR. MAIN SEVERE THREAT WILL BE ACROSS THESE AREAS... ESPECIALLY IN THE VICINITY OF THE BLACK HILLS...WHERE MORE CONCENTRATED ACTIVITY WILL LIKELY DEVELOP. LARGE HAIL AND STRONG WINDS WILL BE THE MAIN THREATS...BUT THERE IS AT LEAST A SLIGHT THREAT FOR TORNADOES TO THE NORTHEAST OF THE SURFACE LOW...MAINLY ACROSS FAR NORTHEASTERN WY AND NORTHWESTERN SD. LOCALLY HEAVY RAINFALL IS ALSO LIKELY WITH SOME OF THE STORMS AS PRECIPITABLE WATER VALUES WILL BE AROUND 1 INCH ACROSS A GOOD PART OF THE AREA. THE THREAT FOR SEVERE WX SHOULD CONTINUE INTO THE EVENING AS ACTIVITY SHIFTS FURTHER EAST. CHANCES FOR SHOWERS AND STORMS WILL CONTINUE ON MONDAY AS SURFACE LOW MOVES SLOWLY NORTHEASTWARD AND COMPACT SHORTWAVE TROF/UPPER LOW PASS OVER THE NORTHERN PLAINS. BETTER CHANCES WILL PROBABLY BE MORE CONFINED TO NORTHERN PORTIONS OF THE CWA. TEMPS WILL REMAIN SEASONABLY WARM...HIGHS MOSTLY IN THE 70S. SEVERE THREAT ON MONDAY LOOKS A BIT LOWER...BUT A FEW STRONG TO SEVERE STORMS ARE CERTAINLY POSSIBLE FROM THE BLACK HILLS EASTWARD. EXTENDED...THE WEATHER PATTERN THROUGH THE BEGINNING OF THE EXTENDED PERIOD WILL BE DOMINATED BY A LARGE UPPER TROUGH OVER THE WESTERN UNITED STATES WITH SOUTHWEST FLOW ALOFT OVER THE NORTHERN PLAINS. THIS WILL LEAD TO A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY. THE BEST CHANCE OF SHOWERS AND THUNDERSTORMS WILL COME ON WEDNESDAY NIGHT AND THURSDAY AS THE UPPER TROUGH CROSSES THE NORTHERN PLAINS. TEMPERATURES WILL REMAIN NEAR NORMAL THROUGH THE PERIOD. && .AVIATION...VFR CONDITIONS ARE EXPECTED ACROSS MUCH OF THE AREA TONIGHT WITH A CHANCE OF SHOWERS AND THUNDERSTORMS. THE BEST CHANCE OF STRONG THUNDERSTORMS WILL BE OVER SOUTHWESTERN AND SOUTH CENTRAL SOUTH DAKOTA. MVFR...WITH AREAS OF IFR...CONDITIONS ARE EXPECTED TO DEVELOP OVER PARTS OF NORTHEASTERN WYOMING AND SOUTHWESTERN SOUTH DAKOTA AROUND 08Z TONIGHT...CONTINUING UNTIL AROUND 15Z SUNDAY MORNING. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...NONE. WY...NONE. &&
Hazardous weather outlook, Jun 13, 3:55 AM MDT, 12 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 355 AM MDT SAT JUN 13 2009 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-141300- BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON- HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK- NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS- NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY- SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS- SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP- WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH- 355 AM MDT (455 AM CDT) SAT JUN 13 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT THERE IS A CHANCE OF AFTERNOON THUNDERSTORMS ACROSS NORTHEAST WYOMING...AND FAR WESTERN AND SOUTHWESTERN SOUTH DAKOTA. ALTHOUGH AN ISOLATED SEVERE THUNDERSTORM OR TWO CANNOT BE RULED OUT...WIDESPREAD SEVERE WEATHER IS NOT EXPECTED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THERE IS A CHANCE FOR THUNDERSTORMS ACROSS THE AREA SUNDAY. SOME STORMS MAY BE SEVERE ACROSS PARTS OF NORTHEAST WYOMING...THE BLACK HILLS...AND SOUTHWEST SOUTH DAKOTA. THERE IS A CHANCE FOR THUNDERSTORMS FROM MONDAY THROUGH FRIDAY AS MULTIPLE UPPER LEVEL DISTURBANCES MOVE THROUGH THE REGION. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
In the hours before
Local storm report, Jun 13, 3:47 PM MDT, 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
347 PM MDT SAT JUN 13 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0342 PM HAIL 6 ENE OELRICHS 43.22N 103.13W
06/13/2009 E1.00 INCH FALL RIVER SD PUBLIC
NO RAIN OR WIND, JUST HAIL
&&
MSMITHLocal storm report, Jun 13, 3:48 PM MDT, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
348 PM MDT SAT JUN 13 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0344 PM HAIL 7 SW DOWNTOWN RAPID CIT 44.00N 103.33W
06/13/2009 E1.00 INCH PENNINGTON SD NWS EMPLOYEE
&&
MSMITHSpecial weather statement, Jun 13, 3:51 PM MDT, 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 351 PM MDT SAT JUN 13 2009 SDZ043-044-132245- BENNETT-JACKSON- INCLUDING THE CITIES OF...ALLEN...HISLE...LONG VALLEY AND MARTIN 351 PM MDT SAT JUN 13 2009 ...STRONG THUNDERSTORMS APPROACHING THE AREA... AT 350 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH PENNY SIZED HAIL AND FREQUENT CLOUD TO GROUND LIGHTNING. THIS STORM WAS LOCATED 6 MILES EAST OF ALLEN...OR 7 MILES NORTHWEST OF MARTIN...AND WAS MOVING NORTHEAST AT 20 MPH. LOCATIONS IMPACTED INCLUDE... HISLE... VETAL... LONG VALLEY... RICHARDS
Special weather statement, Jun 13, 4:11 PM MDT, 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 411 PM MDT SAT JUN 13 2009 SDZ046-047-132315- MELLETTE-TODD- INCLUDING THE CITIES OF...HIDDEN TIMBER...MISSION...MOSHER AND OKREEK 511 PM CDT SAT JUN 13 2009 ...STRONG THUNDERSTORMS APPROACHING THE AREA... AT 510 PM CDT...DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS WITH PENNY SIZED HAIL...HEAVY RAIN...AND FREQUENT CLOUD TO GROUND LIGHTNING. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 9 MILES NORTHEAST OF PARMELEE TO 6 MILES WEST OF HIDDEN TIMBER...AND WERE MOVING NORTHEAST AT 25 MPH. LOCATIONS IMPACTED INCLUDE... HIDDEN TIMBER... OKREEK... WOOD... MOSHER... RICHARDS
Local storm report, Jun 13, 4:14 PM MDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
414 PM MDT SAT JUN 13 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0400 PM HAIL 7 ENE OELRICHS 43.21N 103.09W
06/13/2009 E1.00 INCH FALL RIVER SD PUBLIC
ALMOST AN INCH OF RAIN TOO.
&&
MSMITHLocal storm report, Jun 13, 4:23 PM MDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
423 PM MDT SAT JUN 13 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0405 PM HAIL ROCKERVILLE 43.96N 103.36W
06/13/2009 M1.00 INCH PENNINGTON SD FIRE DEPT/RESCUE
HAIL UP TO QUARTER SIZE FELL FROM 405 PM TO 415 PM MDT.
HAIL ACCUMULATED SEVERAL INCHES DEEP.
&&The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 5:02 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 58 min |
| Jun 13, 5:41 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 64 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2009Every severe thunderstorm warning in 2009
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.