Alert archive / Wyoming / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 143, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 3, 2015, 5:59 PM MDT for Albany County, Laramie County, Wyoming. It was in force for 46 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 3, 2015, 5:59 PM MDT (23:59 UTC)
- Expired
- Jul 3, 2015, 6:45 PM MDT
- In force
- 46 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Albany County, WY, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 50 km from the middle of the area, began a volume at 00:04 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
Denver, CO (KDEN), launched 12:00Z, 12.0 hours before the alert went out and 245 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
- 82 J/kg
- Mixed-layer CIN
- -213 J/kg
- Mixed-layer LCL
- 1332 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 3, 5:56 PM MDT, 3 minutes earlier.
Area forecast discussion, Jul 3, 5:56 PM MDT, 3 minutes before
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</html>Hazardous weather outlook, Jul 3, 11:32 AM MDT, 6 hours 27 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1132 AM MDT FRI JUL 3 2015 NEZ002-003-019>021-054-055-095-096-WYZ101>108-110-114>119-041145- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY-NORTH LARAMIE RANGE- FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-NORTH SNOWY RANGE FOOTHILLS- SNOWY RANGE-LARAMIE VALLEY-SOUTH LARAMIE RANGE- SOUTH LARAMIE RANGE FOOTHILLS-CENTRAL LARAMIE COUNTY- EAST LARAMIE COUNTY- 1132 AM MDT FRI JUL 3 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NEBRASKA AND PORTIONS OF SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND CONTINUE INTO THIS EVENING. A FEW OF THESE THUNDERSTORMS MAY CONTAIN GUSTY WINDS AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY AN ISOLATED THUNDERSTORM IS POSSIBLE ON SATURDAY...BUT THUNDERSTORM COVERAGE IS EXPECTED TO INCREASE ON SUNDAY AND EARLY NEXT WEEK AS A COLD FRONT MOVES SOUTHWARD ACROSS THE REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. WYZ109-111>113-041145- CENTRAL CARBON COUNTY-SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE- UPPER NORTH PLATTE RIVER BASIN- 1132 AM MDT FRI JUL 3 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL WYOMING...MAINLY THE LOWER ELEVATIONS OF CARBON COUNTY. .DAY ONE...TODAY AND TONIGHT A STRAY THUNDERSTORM OR TWO IS POSSIBLE THIS AFTERNOON. OTHERWISE...NO HAZARDOUS WEATHER IS ANTICIPATED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY AN ISOLATED THUNDERSTORM IS POSSIBLE ON SATURDAY...BUT THUNDERSTORM COVERAGE IS EXPECTED TO INCREASE ON SUNDAY AND EARLY NEXT WEEK AS A COLD FRONT MOVES SOUTHWARD ACROSS THE REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.
In the hours before
Local storm report, Jul 3, 3:50 PM MDT, 2 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
350 PM MDT FRI JUL 03 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0349 PM HAIL 25 SW WHEATLAND 41.79N 105.30W
07/03/2015 E0.88 INCH ALBANY WY TRAINED SPOTTER
GROUND WHITE WITH HAIL. RAINING HEAVY.
&&
GCLAYCOMSpecial weather statement, Jul 3, 4:17 PM MDT, 1 hour 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 417 PM MDT FRI JUL 3 2015 WYZ103-105-106-032300- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY- NORTH LARAMIE RANGE WY-SHIRLEY BASIN WY- 417 PM MDT FRI JUL 3 2015 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN CONVERSE AND NORTHEASTERN ALBANY COUNTIES UNTIL 500 PM MDT... AT 417 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR WINDY PEAK...OR 37 MILES WEST OF WHEATLAND...MOVING SOUTHEAST AT 15 MPH. DIME SIZE HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THIS STORM. THIS STRONG THUNDERSTORM WILL BE NEAR... GARRETT AROUND 450 PM MDT. LAT...LON 4227 10579 4234 10559 4206 10529 4192 10571 TIME...MOT...LOC 2217Z 336DEG 14KT 4224 10565 RUBIN
Special weather statement, Jul 3, 4:45 PM MDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 445 PM MDT FRI JUL 3 2015 WYZ103-106-115-116-032330- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY- SOUTH LARAMIE RANGE WY-NORTH LARAMIE RANGE WY-LARAMIE VALLEY WY- 445 PM MDT FRI JUL 3 2015 ...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL ALBANY COUNTY UNTIL 530 PM MDT... AT 445 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR WHEATLAND RESERVOIR 3...OR 34 MILES WEST OF WHEATLAND...MOVING SOUTHEAST AT 20 MPH. DIME SIZE HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THIS STORM. THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF EAST CENTRAL ALBANY COUNTY. LAT...LON 4192 10568 4178 10528 4163 10562 TIME...MOT...LOC 2245Z 329DEG 18KT 4191 10561 RUBIN
Special weather statement, Jul 3, 4:47 PM MDT, 1 hour 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 447 PM MDT FRI JUL 3 2015 WYZ103-106-115-116-032330- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY- SOUTH LARAMIE RANGE WY-NORTH LARAMIE RANGE WY-LARAMIE VALLEY WY- 447 PM MDT FRI JUL 3 2015 ...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL ALBANY COUNTY UNTIL 530 PM MDT... AT 447 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR WHEATLAND RESERVOIR 3...OR 35 MILES WEST OF WHEATLAND...MOVING SOUTHEAST AT 20 MPH. DIME SIZE HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THIS STORM. THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF EAST CENTRAL ALBANY COUNTY. LAT...LON 4193 10569 4198 10558 4178 10528 4163 10563 TIME...MOT...LOC 2247Z 329DEG 18KT 4190 10561 RUBIN
Special weather statement, Jul 3, 5:20 PM MDT, 39 minutes before
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</html>Local storm report, Jul 3, 5:54 PM MDT, 5 minutes before
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</html>The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 6:27 PM MDT | Special Weather Statement | CYS | Albany | 48 min |
| Jul 3, 3:09 AM MDT | Special Weather Statement | CYS | Goshen, Platte | 66 min |
| Jul 3, 2:45 PM MDT | Special Weather Statement | CYS | Platte | 45 min |
| Jul 3, 3:12 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Platte | 63 min |
| Jul 3, 3:48 PM MDT | Special Weather Statement | CYS | 42 min | |
| Jul 3, 3:59 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Laramie, Platte | 61 min |
| Jul 3, 4:17 PM MDT | Special Weather Statement | CYS | Platte | 43 min |
| Jul 3, 4:45 PM MDT | Special Weather Statement | CYS | Albany | 45 min |
| Jul 3, 4:47 PM MDT | Special Weather Statement | CYS | Albany | 43 min |
| Jul 3, 4:58 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Laramie | 62 min |
| Jul 3, 5:20 PM MDT | Special Weather Statement | CYS | Albany | 40 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2015Every severe thunderstorm warning in 2015
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.