Alert archive / Wyoming / Special Weather Statements in 2012
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at Jul 2, 2012, 2:33 PM MDT for Laramie County, Wyoming. It was in force for 42 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 2, 2012, 2:33 PM MDT (20:33 UTC)
- Expired
- Jul 2, 2012, 3:15 PM MDT
- In force
- 42 min
- Issued by
- NWS Cheyenne, WY
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 48 km from the middle of the area, began a volume at 20:33 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, 8.6 hours before the alert went out and 322 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
- 70 J/kg
- Mixed-layer CIN
- -390 J/kg
- Mixed-layer LCL
- 2339 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -7 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 2, 2:28 PM MDT, 5 minutes earlier.
Area forecast discussion, Jul 2, 2:28 PM MDT, 5 minutes before
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</html>Hazardous weather outlook, Jul 2, 2:33 PM MDT, 0 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 233 PM MDT MON JUL 2 2012 NEZ002-003-019>021-054-055-095-096-WYZ101>103-105>108-112>119- 032045- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY-NORTH LARAMIE RANGE-SHIRLEY BASIN- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN 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- 233 PM MDT MON JUL 2 2012 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 ISOLATED THUNDERSTORMS ARE POSSIBLE OVER THE AREA THIS AFTERNOON AND EVENING. NO SEVERE STORMS ARE EXPECTED BUT A FEW OF THEM MAY PRODUCE BRIEF GUSTY WINDS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY AN INCREASING CHANCE FOR SHOWERS AND THUNDERSTORMS IS EXPECTED MAINLY WEDNESDAY THROUGH SUNDAY AS MONSOONAL MOISTURE INCREASES OVER THE REGION. SLOW MOVING THUNDERSTORMS PRODUCING HEAVY RAINFALL WILL BE THE PRIMARY HAZARD WITH THESE STORMS WEDNESDAY AFTERNOON AND EVENING. .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 WYZ104-109>111-032045- FERRIS/SEMINOE/SHIRLEY MOUNTAINS-CENTRAL CARBON COUNTY- NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY- 233 PM MDT MON JUL 2 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED THUNDERSTORMS ARE POSSIBLE OVER THE AREA THIS AFTERNOON AND EVENING. NO SEVERE STORMS ARE EXPECTED BUT A FEW OF THEM MAY PRODUCE BRIEF GUSTY WINDS. RAPID FIRE SPREAD WEATHER CONDITIONS WILL CONTINUE THIS AFTERNOON AND EARLY EVENING DUE TO SOME GUSTY WINDS COMBINING WITH VERY DRY CONDITIONS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY AN INCREASING CHANCE FOR SHOWERS AND THUNDERSTORMS IS EXPECTED MAINLY WEDNESDAY THROUGH SUNDAY AS MONSOONAL MOISTURE INCREASES OVER THE REGION. .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
In the hours before
Special weather statement, Jul 2, 2:33 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
233 PM MDT MON JUL 2 2012
WYZ106-107-115>118-022115-
CENTRAL LARAMIE COUNTY WY-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE
COUNTY WY-EAST PLATTE COUNTY WY-LARAMIE VALLEY WY-SOUTH LARAMIE RANGE
WY-SOUTH LARAMIE RANGE FOOTHILLS WY-
233 PM MDT MON JUL 2 2012
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN PLATTE...WESTERN
LARAMIE AND SOUTHEASTERN ALBANY COUNTIES UNTIL 315 PM MDT...
AT 229 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES WEST OF
HORSE CREEK TO PUMPKIN VINE...AND MOVING EAST AT 10 MPH.
WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH
FREQUENT DANGEROUS LIGHTNING...SMALL HAIL AND A PERIOD OF MODERATE
RAINFALL.
LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
NORTH CROW CAMPGROUND...
BUFORD...
IRON MOUNTAIN...
GRANITE SPRINGS CAMPGROUND...
GRANITE SPRINGS RESERVOIR...
HORSE CREEK...
CRYSTAL LAKE RESERVOIR...
CRYSTAL LAKE CAMPGROUND...
FEDERAL...
WHITAKER...
THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 313 AND
356.
THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 28 AND
51.
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
&&
LAT...LON 4100 10566 4174 10552 4172 10483 4099 10492
4099 10565
TIME...MOT...LOC 2032Z 274DEG 11KT 4137 10531 4101 10539
MSWThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 3:19 AM MDT | Fire Weather Watch | CYS | 17 hr | |
| Jul 2, 3:33 PM MDT | Special Weather Statement | CYS | Laramie | 27 min |
| Jul 1, 6:13 PM MDT | Special Weather Statement | CYS | Dawes | 47 min |
| Jul 1, 6:28 PM MDT | Severe Thunderstorm Warning | CYS | Dawes, Sioux | 28 min |
| Jul 1, 6:34 PM MDT | Special Weather Statement | CYS | Cheyenne | 41 min |
| Jul 1, 6:46 PM MDT | Special Weather Statement | CYS | Cheyenne | 44 min |
| Jul 2, 5:41 PM MDT | Special Weather Statement | CYS | Cheyenne | 64 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.