Alert archive / Wyoming / Special Weather Statements in 2013
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at Oct 13, 2013, 7:34 PM MDT for Laramie 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 outline as issued.
The facts
- Issued
- Oct 13, 2013, 7:34 PM MDT (01:34 UTC)
- Expired
- Oct 13, 2013, 8:15 PM MDT
- In force
- 41 min
- Issued by
- NWS Cheyenne, WY
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 41 km from the middle of the area, began a volume at 01:36 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.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 1.6 hours before the alert went out and 207 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
- 67 J/kg
- Mixed-layer CIN
- -195 J/kg
- Mixed-layer LCL
- 1686 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 249 m²/s²
- 0-3 km storm-relative helicity
- 276 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 Oct 13, 7:23 PM MDT, 11 minutes earlier.
Area forecast discussion, Oct 13, 7:23 PM MDT, 11 minutes before
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</html>Hazardous weather outlook, Oct 13, 6:15 PM MDT, 1 hour 19 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE CHEYENNE WY 615 PM MDT SUN OCT 13 2013 WYZ101>119-141100- 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- 615 PM MDT SUN OCT 13 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING. .DAY ONE...TONIGHT ANOTHER PACIFIC STORM SYSTEM WILL BEGIN TO IMPACT SOUTHEAST WYOMING WITH RAIN SHOWERS ACROSS SOUTHEAST WYOMING BECOMING WIDESPREAD BY MIDNIGHT. ISOLATED THUNDERSTORMS WILL ALSO BE POSSIBLE THROUGH EARLY TONIGHT. THE RAIN WILL EVENTUALLY MIX WITH AND CHANGE OVER TO SNOW ABOVE 7500 FEET LATE TONIGHT. A WINTER WEATHER ADVISORY IS IN EFFECT FOR THE SIERRA MADRE...SNOWY AND NORTHERN LARAMIE RANGES STARTING LATE TONIGHT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY RAIN AND SNOW WILL CONTINUE MONDAY MORNING...WITH MAINLY SNOW ABOVE 6000 FEET. FIVE TO TEN INCHES OF TOTAL NEW SNOW WILL BE POSSIBLE THROUGH MONDAY OVER THE SNOWY AND SIERRA MADRE RANGES. THE LARAMIE RANGE WILL RECEIVE 3 TO 8 INCHES OF SNOW AND THE LOWER ELEVATIONS OF EAST CENTRAL AND SOUTH CENTRAL WYOMING CAN EXPECT 1 TO 2 INCHES BY LATE MONDAY AFTERNOON. THE SNOW WILL END EARLY MONDAY NIGHT. THE WINTER WEATHER ADVISORY IS IN EFFECT THROUGH 6 PM MONDAY FOR THE SNOWY AND SIERRA MADRE RANGES AND UNTIL MIDNIGHT MONDAY NIGHT FOR THE NORTHERN LARAMIE RANGE. WINDS WILL INCREASE FROM THE NORTHWEST ON MONDAY...WITH GUSTS UP TO 55 MPH EXPECTED EAST OF THE LARAMIE RANGE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE NEZ002-003-019>021-054-055-095-096-141100- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 615 PM MDT SUN OCT 13 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE. .DAY ONE...TONIGHT THERE IS A CHANCE OF THUNDERSTORMS THIS EVENING ACROSS WESTERN NEBRASKA. THESE THUNDERSTORMS MAY CONTINUE THROUGH THE NIGHT WITH PERIODS OF MODERATE TO HEAVY RAIN AND OCCASIONAL LIGHTNING THE PRIMARY THREATS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY WINDS WILL INCREASE FROM THE NORTHWEST BEHIND THE COLD FRONT ON MONDAY...WITH GUSTS UP TO 55 MPH EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED 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, Oct 13, 7:34 PM MDT, 0 minutes before
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</html>Special weather statement, Oct 13, 7:34 PM MDT, 0 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 |
|---|---|---|---|---|
| Oct 13, 8:08 PM MDT | Special Weather Statement | CYS | Laramie | 37 min |
| Oct 13, 8:42 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 48 min |
| Oct 14, 1:53 AM MDT | Wind Advisory | CYS | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 25 hr |
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.