Alert archive / Wyoming / Special Weather Statements in 2013
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at May 7, 2013, 2:16 PM MDT for Goshen County, Wyoming. It was in force for 44 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
- May 7, 2013, 2:16 PM MDT (20:16 UTC)
- Expired
- May 7, 2013, 3:00 PM MDT
- In force
- 44 min
- Issued by
- NWS Cheyenne, WY
County Goshen County, WY
The radar
The Cheyenne radar (KCYS), 73 km from the middle of the area, began a volume at 20:17 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 (KDNR), launched 12:00Z, 8.3 hours before the alert went out and 234 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
- 1773 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -68 m²/s²
- 0-3 km storm-relative helicity
- -67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at May 7, 10:29 AM MDT, 3 hours 47 minutes earlier.
Area forecast discussion, May 7, 10:29 AM MDT, 3 hours 47 minutes before
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</html>Hazardous weather outlook, May 7, 9:44 AM MDT, 4 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 944 AM MDT TUE MAY 7 2013 NEZ002-003-019>021-054-055-095-096-WYZ101>119-081030- 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-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-EAST LARAMIE COUNTY- 944 AM MDT TUE MAY 7 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE...EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT SOME THUNDERSTORMS WILL DEVELOP THIS AFTERNOON OVER SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE. THE ACTIVITY WILL BE MOST WIDESPREAD ALONG AND WEST OF THE LARAMIE RANGE. SOME OF THE STRONGER STORMS WILL PRODUCE SMALL HAIL...MODERATE RAINFALL AND WIND GUSTS TO 45 MPH FROM MID AFTERNOON TO THE EARLY EVENING...ESPECIALLY OVER AND NEAR THE NEBRASKA PANHANDLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ISOLATED AFTERNOON AND EARLY EVENING THUNDERSTORMS ARE POSSIBLE MAINLY WEDNESDAY AND THURSDAY. NO SEVERE STORMS ARE EXPECTED AT THIS TIME. .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
Local storm report, May 7, 12:07 PM MDT, 2 hours 9 minutes before
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</html>Local storm report, May 7, 12:18 PM MDT, 1 hour 58 minutes before
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</html>Local storm report, May 7, 12:58 PM MDT, 1 hour 18 minutes before
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</html>Special weather statement, May 7, 1:00 PM MDT, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 100 PM MDT TUE MAY 7 2013 WYZ118-119-071945- CENTRAL LARAMIE COUNTY WY-EAST LARAMIE COUNTY WY- 100 PM MDT TUE MAY 7 2013 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL LARAMIE COUNTY UNTIL 145 PM MDT... AT 1255 PM MDT...STORM SPOTTERS REPORTED A STRONG THUNDERSTORM 6 MILES WEST OF HILLSDALE...OR 12 MILES NORTHEAST OF CHEYENNE...MOVING NORTHEAST AT 5 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. AT 1250 PM...ONE HALF INCH DIAMETER HAIL TO A DEPTH OF 4 INCHES WAS REPORTED 7 MILES TO THE NORTHEAST OF CHEYENNE. ALSO...ONE HALF INCH OF RAIN FELL IN 15 MINUTES AT THAT LOCATION. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... HILLSDALE... BURNS... THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 370 AND 388. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. 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 4143 10445 4116 10431 4108 10464 4130 10474 TIME...MOT...LOC 1858Z 230DEG 3KT 4124 10458 MSW
Special weather statement, May 7, 1:37 PM MDT, 39 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 137 PM MDT TUE MAY 7 2013 WYZ106>108-118-119-072015- CENTRAL LARAMIE COUNTY WY-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY-EAST LARAMIE COUNTY WY-EAST PLATTE COUNTY WY-GOSHEN COUNTY WY- 137 PM MDT TUE MAY 7 2013 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PLATTE...NORTHERN LARAMIE AND SOUTHWESTERN GOSHEN COUNTIES UNTIL 215 PM MDT... AT 134 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12 MILES SOUTHWEST OF BORDEAUX...OR 16 MILES SOUTHWEST OF WHEATLAND...MOVING NORTH AT 15 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 49 AND 57. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. 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 4141 10430 4128 10462 4176 10490 4186 10445 TIME...MOT...LOC 1937Z 130DEG 58KT 4189 10519 MSW
Special weather statement, May 7, 2:16 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 216 PM MDT TUE MAY 7 2013 WYZ108-072100- GOSHEN COUNTY WY- 216 PM MDT TUE MAY 7 2013 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GOSHEN COUNTY UNTIL 300 PM MDT... AT 212 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 15 MILES NORTHWEST OF MERIDEN REST AREA...OR 32 MILES SOUTHWEST OF TORRINGTON...MOVING NORTHEAST AT 15 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. THIS STORM WILL BE NEAR... RURAL SOUTHERN GOSHEN COUNTY THROUGH 300 PM MDT IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. && LAT...LON 4187 10445 4173 10426 4164 10456 4169 10460 TIME...MOT...LOC 2016Z 227DEG 11KT 4169 10452 RUBIN
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 1:00 PM MDT | Special Weather Statement | CYS | Laramie | 45 min |
| May 7, 1:37 PM MDT | Special Weather Statement | CYS | Laramie | 38 min |
| May 7, 3:49 PM MDT | Special Weather Statement | CYS | Dawes | 56 min |
| May 7, 3:57 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 48 min |
| May 7, 4:20 PM MDT | Special Weather Statement | CYS | Dawes | 40 min |
| May 7, 4:26 PM MDT | Special Weather Statement | CYS | Sioux | 49 min |
| May 7, 5:02 PM MDT | Special Weather Statement | CYS | Box Butte | 43 min |
| May 7, 5:19 PM MDT | Special Weather Statement | CYS | Box Butte | 56 min |
Nearby
Special Weather Statements in Wyoming, 2013Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.