Alert archive / Wyoming / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 168, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 21, 2013, 6:34 PM MDT for Converse County, Niobrara County, Wyoming. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 21, 2013, 6:34 PM MDT (00:34 UTC)
- Expired
- Jul 21, 2013, 7:15 PM MDT
- In force
- 41 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
Counties Converse County, WY, Niobrara County, WY
The radar
The Cheyenne radar (KCYS), 208 km from the middle of the area, began a volume at 00:36 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 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 Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 3:17 PM MDT, 3 hours 17 minutes earlier.
Area forecast discussion, Jul 21, 3:17 PM MDT, 3 hours 17 minutes before
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</html>Hazardous weather outlook, Jul 21, 3:20 PM MDT, 3 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 320 PM MDT SUN JUL 21 2013 WYZ101-103>107-109>118-220930- CONVERSE COUNTY LOWER ELEVATIONS-NORTH LARAMIE RANGE- FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-CENTRAL CARBON COUNTY- NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY- SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY- 320 PM MDT SUN JUL 21 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING... SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT VERY DRY CONDITIONS ARE EXPECTED THIS AFTERNOON FOR CARBON COUNTY AND AREAS WEST OF THE LARAMIE RANGE. AFTERNOON HUMIDITIES ARE EXPECTED TO FALL INTO THE SINGLE DIGITS. WINDS ARE EXPECTED TO GUSTS TO 30 TO 35 MPH THIS AFTERNOON. CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED FOR CARBON COUNTY AND PORTIONS OF EXTREME WESTERN ALBANY COUNTY. RED FLAG WARNINGS HAVE BEEN POSTED UNTIL 6 PM FOR THOSE AREAS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SIMILAR FIRE WEATHER CONDITIONS CAN BE EXPECTED MONDAY WITH SLIGHTLY STRONGER WINDS. A FIRE WEATHER WATCH HAS BEEN POSTED FOR CARBON COUNTY AND EXTREME WESTERN ALBANY COUNTY FOR MONDAY. MONSOONAL MOISTURE RETURNS TO THE AREA WEDNESDAY NIGHT INTO THURSDAY WHICH WILL HELP DEVELOP SCATTERED THUNDERSTORMS DURING THIS TIME. AT THIS TIME...THESE THUNDERSTORMS ARE NOT EXPECTED TO BECOME SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE REQUIRED THIS AFTERNOON OR TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE NEZ002-003-019>021-054-055-095-096-WYZ102-108-119-220930- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX-NIOBRARA COUNTY-GOSHEN COUNTY- EAST LARAMIE COUNTY- 320 PM MDT SUN JUL 21 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE...SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT WIDELY SCATTERED THUNDERSTORMS ARE ONCE AGAIN EXPECTED THROUGH THE EVENING OVER MAINLY THE NORTHERN PART OF THE NEBRASKA PANHANDLE. SOME OF THE STORMS MAY PRODUCE GUSTY WINDS...A PERIOD OF MODERATE RAIN AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ISOLATED THUNDERSTORMS ARE EXPECTED MONDAY AND TUESDAY AFTERNOON...MAINLY ACROSS THE NORTHERN PANHANDLE. THESE THUNDERSTORMS ARE NOT EXPECTED TO BECOME SEVERE AT THIS TIME. A MORE WIDESPREAD THUNDERSTORM EVENT LOOKS TO TAKE SHAPE WEDNESDAY NIGHT AND PERSIST INTO FRIDAY AS MONSOONAL MOISTURE RETURNS TO THE AREA. ITS STILL TO EARLY TO DETERMINE WHETHER THESE THUNDERSTORMS WILL BE SEVERE AT THIS POINT AND WHERE THEY WILL FORM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THIS AFTERNOON AND TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE WEILAND
In the hours before
Special weather statement, Jul 21, 4:58 PM MDT, 1 hour 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 458 PM MDT SUN JUL 21 2013 WYZ110-220000- NORTH SNOWY RANGE FOOTHILLS- INCLUDING THE CITIES OF...ARLINGTON...ELK MOUNTAIN 458 PM MDT SUN JUL 21 2013 ...STRONG AND GUSTY WINDS AFFECTING THE NORTH SNOWY RANGE FOOTHILS LATE THIS AFTERNOON... SUSTAINED WESTERLY WINDS OF 25 TO 35 MPH WILL GUST TO 50 MPH AT TIMES LATE THIS AFTERNOON...AFFECTING THE INTERSTATE 80 CORRIDOR WEST OF LARAMIE TO ARLINGTON. THIS INCLUDES HALLECK RIDGE AND ELK MOUNTAIN. THE WYOMING DEPARTMENT OF TRANSPORTATION ADVISES NO LIGHT TRAILER TRAFFIC DUE TO WIND SPEEDS ABOVE 50 MPH. THESE WINDS MAY CAUSE LOSS OF VEHICLE CONTROL OR A BLOW OVER TO HIGH PROFILE VEHICLES TRAVELING EMPTY OR WITH A LIGHT LOAD. DRIVERS OF SUCH VEHICLES ARE ADVISED TO DELAY TRAVEL. JAMSKI
Special weather statement, Jul 21, 5:30 PM MDT, 1 hour 4 minutes before
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</html>Local storm report, Jul 21, 5:51 PM MDT, 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
551 PM MDT SUN JUL 21 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0544 PM HAIL BILL 43.21N 105.26W
07/21/2013 E2.75 INCH CONVERSE WY TRAINED SPOTTER
HAIL UP TO BASEBALL SIZE BETWEEN 544 AND 549 PM MDT.
&&
HAMMERSpecial weather statement, Jul 21, 6:29 PM MDT, 5 minutes before
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</html>Special weather statement, Jul 21, 6:31 PM MDT, 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 631 PM MDT SUN JUL 21 2013 WYZ107-220100- EAST PLATTE COUNTY WY- 631 PM MDT SUN JUL 21 2013 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN PLATTE COUNTY UNTIL 700 PM MDT... AT 627 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5 MILES NORTHWEST OF SIBLEY PEAK...OR 24 MILES SOUTHEAST OF DOUGLAS...MOVING SOUTHEAST AT 20 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. THIS STORM WILL BE NEAR... SIBLEY PEAK AROUND 640 PM MDT. GLENDO RESERVOIR AND TWO MOON CAMPGROUND AROUND 650 PM MDT. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. && LAT...LON 4248 10483 4228 10500 4243 10522 4255 10512 TIME...MOT...LOC 0031Z 301DEG 16KT 4246 10510 JAMSKI
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:29 PM MDT | Special Weather Statement | CYS | Niobrara | 31 min |
| Jul 21, 6:31 PM MDT | Special Weather Statement | CYS | Platte | 29 min |
| Jul 21, 6:59 PM MDT | Red Flag Warning | CYS | 24 hr | |
| Jul 21, 7:02 PM MDT | Special Weather Statement | CYS | Platte | 28 min |
| Jul 21, 7:10 PM MDT | Special Weather Statement | CYS | Niobrara | 35 min |
| Jul 21, 7:20 PM MDT | Special Weather Statement | CYS | Niobrara | 25 min |
| Jul 21, 7:48 PM MDT | Special Weather Statement | CYS | Goshen | 27 min |
| Jul 21, 7:56 PM MDT | Special Weather Statement | CYS | Niobrara | 34 min |
| Jul 21, 7:14 PM MDT | Special Weather Statement | CYS | Sioux | 31 min |
| Jul 21, 8:16 PM MDT | Special Weather Statement | CYS | Sioux | 29 min |
| Jul 21, 8:48 PM MDT | Special Weather Statement | CYS | Box Butte, Dawes | 27 min |
| Jul 21, 9:54 PM MDT | Special Weather Statement | CYS | Box Butte | 66 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2013Every severe thunderstorm warning in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.