Alert archive / Wyoming / High Wind Watches in 2009
High Wind Watch 14, NWS Cheyenne, WY
NWS Cheyenne, WY issued this high wind watch at Dec 9, 2009, 3:19 AM MST for 4 counties in Wyoming. It took effect at Dec 9, 2009, 8:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 9, 2009, 3:19 AM MST (10:19 UTC)
- In effect from
- Dec 9, 2009, 8:00 PM MST
- Expired
- Dec 9, 2009, 8:56 AM MST
- In force
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Carbon County, WY, Laramie County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 88 km from the middle of the area, began a volume at 10:16 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 00:00Z, 10.3 hours before the alert went out and 283 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
- 849 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -123 m²/s²
- 0-3 km storm-relative helicity
- -76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high wind watch 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 high wind watch went out at Dec 8, 10:00 PM MST, 5 hours 19 minutes earlier.
Area forecast discussion, Dec 8, 10:00 PM MST, 5 hours 19 minutes before
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</html>Hazardous weather outlook, Dec 8, 8:10 PM MST, 7 hours 9 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 810 PM MST TUE DEC 8 2009 WYZ103>107-109>119-091245- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE 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- 810 PM MST TUE DEC 8 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING... SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TONIGHT SOME LIGHT SNOW OR FLURRIES WILL PERSIST UNTIL AROUND MIDNIGHT WITH ANY ADDITIONAL ACCUMULATION REMAINING BELOW AN INCH. WEST WINDS WILL INCREASE LATE IN MANY PLACES AND PRODUCING AREAS OF BLOWING AND DRIFTING SNOW. WIND CHILL VALUES WILL BE FROM 20 TO 30 BELOW ZERO...WITH A WIND CHILL ADVISORY IN EFFECT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NORTHWEST WINDS WILL BE STRONG WEDNESDAY THROUGH THURSDAY. THE WINDS WILL BE SUSTAINED AT 25 TO 35 MPH WITH GUSTS AS HIGH AS 50 MPH. THE WINDS WILL PRODUCE WIDESPREAD BLOWING AND DRIFTING SNOW AND VERY COLD WIND CHILL VALUES ESPECIALLY ON WEDNESDAY AND WEDNESDAY NIGHT. THE VISIBILITIES IN BLOWING SNOW WILL BE NEAR ZERO IN SOME PLACES AT TIMES. WIND CHILL VALUES WILL AGAIN DROP TO 20 TO 30 BELOW ZERO ON WEDNESDAY NIGHT. TRAVEL WILL BE VERY HAZARDOUS OVER THE AREA WEDNESDAY AND WEDNESDAY NIGHT WITH THE SLICK ROADS AND REDUCED VISIBILITY. A WINTER WEATHER ADVISORY IS IN EFFECT FOR WEDNESDAY AND WEDNESDAY NIGHT. .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 WYZ101-102-108-091245- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY-GOSHEN COUNTY- 810 PM MST TUE DEC 8 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING. .DAY ONE...TONIGHT SOME LIGHT SNOW OR FLURRIES WILL PERSIST UNTIL AROUND MIDNIGHT WITH LITTLE ADDITIONAL ACCUMULATION. WIND CHILL VALUES WILL BE FROM 20 TO 30 BELOW ZERO TONIGHT WITH A WIND CHILL ADVISORY IN EFFECT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NORTHWEST WINDS WILL INCREASE WEDNESDAY THROUGH THURSDAY. THE WINDS WILL BE SUSTAINED AT 20 TO 30 MPH WITH GUSTS AS HIGH AS 40 MPH. THE WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW AND VERY COLD WIND CHILL VALUES ESPECIALLY ON WEDNESDAY AND WEDNESDAY NIGHT. WIND CHILL VALUES WILL AGAIN BE 20 TO 30 BELOW ZERO ON WEDNESDAY NIGHT. .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>021-054-055-095-096-091245- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 810 PM MST TUE DEC 8 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE. .DAY ONE...TONIGHT LIGHT SNOW WILL REMAIN LIKELY UNTIL AROUND MIDNIGHT. ANY NEW SNOWFALL WILL BE AN INCH OR LESS. WIND CHILL VALUES WILL BE FROM 20 TO 30 BELOW ZERO WITH A WIND CHILL ADVISORY IN EFFECT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NORTHWEST WINDS WILL BLOW AT 10 TO 15 MPH ON WEDNESDAY...AND 15 TO 20 MPH THURSDAY. EVEN THESE WIND SPEEDS WILL BE ENOUGH TO PRODUCE LOCAL BLOWING AND DRIFTING SNOW. WIND CHILL VALUES WILL AGAIN DROP TO 20 TO 30 BELOW ZERO ON WEDNESDAY NIGHT. .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
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 5:33 AM MST | High Wind Warning | CYS | Albany, Carbon, Laramie, Platte | 35 hr |
| Dec 9, 2:44 PM MST | Wind Chill Advisory | CYS | Albany, Carbon, Converse, Laramie, Niobrara, Platte | 18 hr |
Nearby
High Wind Watches in Wyoming, 2009Every high wind watch in 2009
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.