Alert archive / Wyoming / Special Weather Statements in 2012
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at Jul 11, 2012, 5:36 PM MDT for Platte County, Wyoming. It was in force for 39 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
- Jul 11, 2012, 5:36 PM MDT (23:36 UTC)
- Expired
- Jul 11, 2012, 6:15 PM MDT
- In force
- 39 min
- Issued by
- NWS Cheyenne, WY
County Platte County, WY
The radar
The Cheyenne radar (KCYS), 103 km from the middle of the area, began a volume at 23:37 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
Riverton, WY (KRIW), launched 12:00Z, 11.6 hours before the alert went out and 286 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
- 3038 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 72 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 Jul 11, 5:13 PM MDT, 23 minutes earlier.
Area forecast discussion, Jul 11, 5:13 PM MDT, 23 minutes before
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</html>Hazardous weather outlook, Jul 11, 11:16 AM MDT, 6 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1116 AM MDT WED JUL 11 2012 NEZ002-003-019>021-054-055-095-096-121730- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 1116 AM MDT WED JUL 11 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE. .DAY ONE...THIS AFTERNOON AND TONIGHT A FEW THUNDERSTORMS MAY MOVE THROUGH THE NORTHERN SECTIONS OF THE NEBRASKA PANHANDLE THIS EVENING. SOME OF THE STORMS MAY BE STRONG AND PRODUCE GUSTY WINDS TO 50 MPH AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS ANOTHER CHANCE OF THUNDERSTORMS ACROSS THE NEBRASKA PANHANDLE THURSDAY MORNING INTO THE EARLY AFTERNOON. THESE STORMS ARE NOT EXPECTED TO BECOME STRONG OR SEVERE. THE NEXT CHANCE OF THUNDERSTORMS WILL BE THIS WEEKEND BEGINNING LATE SATURDAY AFTERNOON AND CONTINUING THROUGH SATURDAY NIGHT. THE MAIN THREAT WITH THESE STORMS WILL BE HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE WYZ101>119-121730- 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- 1116 AM MDT WED JUL 11 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING... SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT A FEW THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND THIS EVENING. SOME OF THE STORMS MAY BECOME STRONG ESPECIALLY OVER THE NORTHERN LARAMIE RANGE AND POINTS EAST. THE MAIN THREAT WITH THESE STORMS WILL BE DRY LIGHTNING WHICH MAY SPARK FIRES...PRODUCE GUSTY WINDS UP TO 50 MPH AND SMALL HAIL. THESE STORMS WILL GENERALLY MOVE SOUTHEAST AT 15 TO 20 MPH. THE REMAINDER OF THE AREA MAY SEE AN ISOLATED STORM OR TWO ESPECIALLY IN THE HIGHER ELEVATIONS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A FEW ISOLATED THUNDERSTORMS ARE POSSIBLE ACROSS THE SOUTHERN LARAMIE RANGE ON THURSDAY WITH MORE THUNDERSTORMS POSSIBLE ON FRIDAY. THE BETTER CHANCES OF THUNDERSTORMS WILL OCCUR THIS WEEKEND ACROSS MUCH OF THE AREA. THE MAIN THREAT WITH THE STORMS THIS WEEKEND WILL BE HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE COX
In the hours before
Special weather statement, Jul 11, 3:59 PM MDT, 1 hour 37 minutes before
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</html>Special weather statement, Jul 11, 4:46 PM MDT, 50 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 446 PM MDT WED JUL 11 2012 WYZ103-112330- NORTH LARAMIE RANGE WY- 446 PM MDT WED JUL 11 2012 ...SIGNIFICANT WEATHER ADVISORY FOR EXTREME SOUTHERN CONVERSE AND NORTHERN ALBANY COUNTIES UNTIL 530 PM MDT... AT 443 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5 MILES SOUTH OF WINDY PEAK...OR 35 MILES WEST OF WHEATLAND...MOVING SOUTHEAST AT 10 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM ALONG WITH MODERATE RAINFALL. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... GARRETT... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. && LAT...LON 4200 10532 4194 10562 4224 10576 4234 10556 TIME...MOT...LOC 2246Z 325DEG 8KT 4221 10559 MSW
Special weather statement, Jul 11, 5:20 PM MDT, 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 520 PM MDT WED JUL 11 2012 WYZ101>105-109>115-120230- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL CARBON COUNTY-NORTH SNOWY RANGE FOOTHILLS- SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE- UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE-LARAMIE VALLEY- INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...LUSK...MUDDY GAP... MEDICINE BOW...RAWLINS...SINCLAIR...HANNA...ARLINGTON... ELK MOUNTAIN...BAGGS...DIXON...SARATOGA...ENCAMPMENT... RIVERSIDE...CENTENNIAL...ALBANY...WOODS LANDING...LARAMIE 520 PM MDT WED JUL 11 2012 ...STRONG WIND GUSTS WILL BE ASSOCIATED WITH MANY OF THE SHOWERS AND THUNDERSTORMS... BRIEF AND STRONG WIND GUSTS TO 55 MPH WILL BE ASSOCIATED WITH MANY OF THE SHOWERS AND THUNDERSTORMS THROUGH THE EVENING OVER MUCH OF SOUTHEAST WYOMING. AT 450 PM...THE RAWLINS AIRPORT HAD A WIND GUST TO 50 MPH. THE SHOWERS AND STORMS WILL MOVE TO THE EAST OR SOUTHEAST AT 25 MPH. IN ADDITION TO THE STRONG WIND GUSTS WILL BE SOME LIGHTNING... AND GENERALLY LIGHT RAINFALL. TRAVELERS OR THOSE WITH OUTDOOR ACTIVITIES SHOULD BE AWARE OF THE SHOWERS AND THUNDERSTORMS IN THE AREA THROUGH THE EVENING HOURS AND THE STRONG WIND GUSTS ASSOCIATED. THE LIGHTNING MAY ALSO SPARK FIRES IN THE AREA WHICH MAY SPREAD QUICKLY FOR A TIME DUE TO THE STRONG AND ERRATIC WINDS. WEILAND
Special weather statement, Jul 11, 5:36 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 536 PM MDT WED JUL 11 2012 WYZ103-106-120015- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY-NORTH LARAMIE RANGE WY- 536 PM MDT WED JUL 11 2012 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN PLATTE AND NORTHEASTERN ALBANY COUNTIES UNTIL 615 PM MDT... AT 533 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12 MILES EAST OF GARRETT...OR 21 MILES WEST OF WHEATLAND...MOVING SOUTHEAST AT 10 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... MAINLY RURAL AREAS OF EXTREME WESTERN PLATTE AND NORTHEASTERN ALBANY COUNTIES. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. && LAT...LON 4199 10497 4180 10532 4209 10553 4224 10529 TIME...MOT...LOC 2336Z 312DEG 10KT 4209 10536 MSW
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 7:59 PM MDT | Special Weather Statement | CYS | 46 min | |
| Jul 11, 2:29 AM MDT | Red Flag Warning | CYS | 18 hr | |
| Jul 11, 3:59 PM MDT | Special Weather Statement | CYS | Laramie | 61 min |
| Jul 11, 4:43 PM MDT | Special Weather Statement | CYS | Laramie | 47 min |
| Jul 11, 4:46 PM MDT | Special Weather Statement | CYS | Platte | 44 min |
Nearby
Special Weather Statements in Wyoming, 2012Every special weather statement in 2012
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.