Alert archive / Wyoming / High Wind Warnings in 2009
High Wind Warning 80, NWS Cheyenne, WY
NWS Cheyenne, WY issued this high wind warning at Dec 12, 2009, 1:18 PM MST for Albany County, Laramie County, Platte County, Wyoming. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 12, 2009, 1:18 PM MST (20:18 UTC)
- Expired
- Dec 12, 2009, 4:11 PM MST
- In force
- 3 hr
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Laramie County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 66 km from the middle of the area, began a volume at 20:19 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 12, 1:22 PM MST | NON-TSTM WND GST 75 | 10 Se Wheatland, WY | PEAK GUST SO FAR AT THE INTERSTATE 25 BORDEAUX EXIT WAS 75 MPH. OTHER GUSTS HAVE BEEN BETWEEN 60 AND 73 MPH SINCE 1 PM. SUSTAINED WINDS WERE BETWEEN 40 AND 45 MPH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 8.3 hours before the alert went out and 259 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
- 2521 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS75 KCYS 122018 NPWCYS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 118 PM MST SAT DEC 12 2009 ...STRONG WEST WINDS WILL CONTINUE THROUGH THE EARLY EVENING NEAR THE LARAMIE RANGE.... .A LARGE PRESSURE DIFFERENCE ACROSS THE REGION WILL PRODUCE STRONG WEST WINDS THROUGH EARLY THIS EVENING. THE WINDS WILL BE STRONGEST OVER AND NEAR THE LARAMIE RANGE. WYZ106-116-117-130100- /O.NEW.KCYS.HW.W.0080.091212T2018Z-091213T0100Z/ CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- INCLUDING THE CITIES OF...BORDEAUX...VEDAUWOO...BUFORD... PUMPKIN VINE...HORSE CREEK...HARRIMAN...WHITAKER 118 PM MST SAT DEC 12 2009 ...HIGH WIND WARNING IN EFFECT UNTIL 6 PM MST THIS EVENING... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 6 PM MST THIS EVENING. * TIMING: STRONG AND VERY GUSTY WEST WINDS WILL CONTINUE THROUGH 6 PM MST THIS EVENING. * WINDS: SUSTAINED WINDS OF 35 TO 45 WITH GUSTS 60 TO 65 MPH WILL OCCUR ALONG THE LARAMIE RANGE...WITH STRONGEST WINDS ALONG INTERSTATE 25 NEAR BORDEAUX. * IMPACTS: THE VERY STRONG WINDS WILL CREATE HAZARDOUS TRAVEL CONDITIONS...ESPECIALLY FOR THOSE IN HIGH PROFILE OR LIGHTWEIGHT VEHICLES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. FOR DETAILED ROAD AND TRAVEL CONDITIONS IN WYOMING AND NEBRASKA...DIAL 5 1 1. && $$ RJM
1 follow-up statement
000 WWUS75 KCYS 122311 NPWCYS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 411 PM MST SAT DEC 12 2009 WYZ106-116-117-130015- /O.CAN.KCYS.HW.W.0080.000000T0000Z-091213T0100Z/ CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- INCLUDING THE CITIES OF...BORDEAUX...VEDAUWOO...BUFORD... PUMPKIN VINE...HORSE CREEK...HARRIMAN...WHITAKER 411 PM MST SAT DEC 12 2009 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE HIGH WIND WARNING. THE STRONG SOUTHWEST WINDS HAVE DIMINISHED THROUGH THE AFTERNOON ACROSS THE AREA AND WILL CONTINUE TO EASE THROUGH THE EVENING SO HAVE CANCELLED THE WARNING. SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 40 MPH ARE STILL POSSIBLE THROUGH MIDNIGHT. $$ RJM
What forecasters said that day
The local office's own words before this high wind warning 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 warning went out at Dec 12, 1:15 PM MST, 3 minutes earlier.
Area forecast discussion, Dec 12, 1:15 PM MST, 3 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
114 PM MDT MST SAT DEC 12 2009
.DISCUSSION...WINDS HAVE REACHED HIGH WIND CRITERIA AS OF 20Z AT
KBRX AND WEB CAMS SHOW A SEMI BLOWN OVER. WINDS WERE ALSO NEAR
CRITERIA AT KWTR AND AT WYO HILL. SPEEDS HAVE BEEN INCREASING OVER
THE PAST HOUR OR SO. HAVE ISSUED A HIGH WIND WARNING UNTIL 01Z FOR
ZONES 106...116 AND 117.
&&
.PREVIOUS DISCUSSION.../ISSUED AT 430 AM MST SAT DEC 12 2009/...
SHORT TERM...TODAY THROUGH SUNDAY NIGHT...
HIGH LEVEL MOISTURE HAS INCREASED OVER THE AREA AS A GENERAL ZONAL
FLOW IN PLACE ACROSS MUCH OF THE COUNTRY WITH SOME LEE ENHANCED
CLOUDS ACROSS THE EASTERN CWA. TWO SYSTEMS EXPECTED TO AFFECT THE
CWA OVER THE NEXT 48 HOURS. ONE BEING AN UPPER LOW WHICH WILL MOVE
ONSHORE ALONG THE CAL COAST THIS EVENING THEN OPEN AND ACCELERATE
EASTWARD ACROSS THE REGION SUNDAY. THE OTHER BEING AN ARCTIC COLD
FRONT WHICH WILL SLIP SOUTHWESTWARD TONIGHT AND SHOULD LIE SOMEWHERE
FROM EAST CENTRAL WY INTO THE SOUTHERN NEB PANHANDLE SUNDAY.
OBVIOUSLY POSITION OF THIS FRONT WILL BE CRITICAL FOR TEMPERATURES.
SOME LIGHT SNOWS ALSO EXPECTED TONIGHT THROUGH SUNDAY...MAINLY OVER
THE MTNS WITH THE UPPER SYSTEM AND OVER THE NORTHERN CWA IN
ASSOCIATION WITH THE FRONT. SNOWFALL AMOUNTS NOT EXPECTED TO BE
HIGH BUT AT LEAST A FEW INCHES OVER THE HIGHER MTNS. OTHERWISE
LOCALLY WINDY CONDITIONS WILL PERSIST OVER WIND PRONE AREAS TODAY
AND SUNDAY. ARCTIC FRONT SHOULD BEGIN TO PULL BACK EAST SUNDAY NIGHT
BUT STILL QUITE COLD OVER THE NORTHEAST PART OF THE NEBRASKA
PANHANDLE.
LONG TERM...MONDAY THROUGH FRIDAY. DECEMBER 11TH 5PM MST ECMWF AND
GFS 500 MB SYNOPTIC PATTERNS SIMILAR...LEADING TO HIGH CONFIDENCE IN
THEIR RESPECTIVE MODEL SOLUTIONS.
MONDAY...STARK CONTRAST IN MAXIMUM TEMPERATURES FROM CHEYENNE TO
CHADRON AS SHALLOW ARCTIC AIRMASS WILL RESIDE ACROSS OUR EASTERN
COUNTIES. HIGH TEMPERATURES IN THE 30S TO LOWER 40S WEST OF THE
BOUNDARY...WITH TEENS AND 20S IN THE ARCTIC AIRMASS EAST OF THE COLD
FRONT. ISOLATED SNOW SHOWERS IN THE UPSLOPE REGIME IN THE ARCTIC
AIRMASS WITH SCATTERED TO NUMEROUS OROGRAPHIC SNOW SHOWERS ACROSS
THE SNOWY RANGE IN MOIST WEST FLOW ALOFT.
TUESDAY...TEMPERATURES NEAR CLIMATOLOGICAL NORMALS WITH HIGHS IN THE
20S AND 30S WITH 1000-500 MB THICKNESSES NEAR 5430 METERS AND
SIGNIFICANT AMOUNTS OF OPAQUE MIDDLE AND HIGH LEVEL CLOUDINESS
DOWNWIND OF A DIRTY RIDGE ALOFT ACROSS THE GREAT BASIN STATES.
OROGRAPHIC SNOW SHOWERS WILL REMAIN WEST OF THE SNOWY RANGE...AND
ACROSS FAR WESTERN WYOMING.
WEDNESDAY...WARMING TREND ON TAP AS 1000-500 MB THICKNESSES WARM TO
5520 METERS. HIGH TEMPERATURES IN THE 30S TO MIDDLE 40S...ASSUMING
MIDDLE AND HIGH CLOUD OPACITY IS MINIMAL.
THURSDAY...HIGH TEMPERATURES EVEN WARMER WITH 30S WEST TO 40S EAST
WITH 1000-500 MB THICKNESSES NEAR 5520 METERS...AND ASSUMING MINIMAL
AND NEGLIGIBLE OPACITY EFFECT FROM MIDDLE AND HIGH CLOUDS.
FRIDAY...MILD WEATHER TREND CONTINUES FROM THURSDAY WITH NORTHWEST
FLOW ALOFT...500 MB HEIGHTS NEAR 5730 METERS...1000-500 MB
THICKNESSES NEAR 5570 METERS AND MINIMAL OPACITY FROM MIDDLE AND
HIGH CLOUDS. HIGH TEMPERATURES FROM MID 30S ACROSS CARBON COUNTY
WYOMING TO UPPER 40S ACROSS FAR SOUTHEAST WYOMING AND MUCH OF
SOUTHWEST NEBRASKA.
&&
.AVIATION...VFR TODAY...EXCEPT FOR MVFR IN SCATTERED SNOW SHOWERS
ACROSS SOUTHWEST CARBON COUNTY AND THE SNOWY RANGE. SNOWY RANGE
MOUNTAINS OCCASIONALLY OBSCURED.
VFR TONIGHT...EXCEPT FOR IFR AND MVFR IN SNOW SHOWERS ACROSS CARBON
COUNTY AND IN LOW CLOUDS AND FOG EAST OF AN ARCTIC COLD FRONT FROM
DOUGLAS TO KIMBALL. MOUNTAINS OBSCURED.
VFR SUNDAY...EXCEPT FOR IFR AND MVFR IN SNOW SHOWERS...FOG AND LOW
CLOUDS NORTH OF A LARAMIE TO ALLIANCE LINE. MOUNTAINS OBSCURED.
&&
.FIRE WEATHER...NO CONCERNS ANTICIPATED THROUGH SUNDAY.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...HIGH WIND WARNING UNTIL 6 PM THIS EVENING FOR WYZ106...WYZ116...
WYZ117.
NE...NONE.
&&
SHORT TERM/FIRE WEATHER...RE
LONG TERM/AVIATION...RUBIN
UPDATE...WEILANDHazardous weather outlook, Dec 12, 4:28 AM MST, 8 hours 50 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 428 AM MST SAT DEC 12 2009 NEZ002-003-019>021-054-055-095-096-WYZ101>105-107>109-111-113-115- 117>119-131200- 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-EAST PLATTE COUNTY- GOSHEN COUNTY-CENTRAL CARBON COUNTY-SOUTHWEST CARBON COUNTY- UPPER NORTH PLATTE RIVER BASIN-LARAMIE VALLEY- SOUTH LARAMIE RANGE FOOTHILLS-CENTRAL LARAMIE COUNTY- EAST LARAMIE COUNTY- 428 AM MST SAT DEC 12 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE...EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE WYZ106-110-116-131200- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- NORTH SNOWY RANGE FOOTHILLS-SOUTH LARAMIE RANGE- 428 AM MST SAT DEC 12 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING... SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT LOCALLY GUSTY WINDS CAN BE EXPECTED THROUGH TONIGHT. SOME GUSTS IN EXCESS OF 45 MPH ARE LIKELY ESPECIALLY IN WIND PRONE AREAS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE WYZ112-114-131200- SIERRA MADRE RANGE-SNOWY RANGE- 428 AM MST SAT DEC 12 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT SNOW SHOWERS ARE EXPECTED TO INCREASE OVER THE MOUNTAINS TONIGHT WITH SOME LIGHT ACCUMULATIONS POSSIBLE ALONG WITH AREAS OF BLOWING SNOW. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED TO NUMEROUS SNOW SHOWERS WILL CONTINUE SUNDAY INTO SUNDAY NIGHT WITH SEVERAL INCHES OF NEW SNOW LIKELY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY 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, Dec 12, 11:07 AM MST, 2 hours 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1107 AM MST SAT DEC 12 2009 WYZ106-110-122100- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- NORTH SNOWY RANGE FOOTHILLS- INCLUDING THE CITIES OF...BORDEAUX...ARLINGTON...ELK MOUNTAIN 1107 AM MST SAT DEC 12 2009 ...GUSTY SOUTHWEST WINDS TO CONTINUE THROUGH THIS AFTERNOON... STRONG AND GUSTY SOUTHWEST WINDS WILL CONTINUE ACROSS PORTIONS OF SOUTHEAST WYOMING THROUGH THE AFTERNOON. 30 TO 40 MPH WITH LOCALLY HIGHER WINDS SPEEDS AND GUSTS TO 55 MPH CAN BE EXPECTED ALONG INTERSTATE 80 NEAR ARLINGTON AND ALONG INTERSTATE 25 NEAR BORDEAUX. MOTORISTS ARE URGED TO EXERCISE CAUTION WHILE DRIVING IN THESE AREAS AND BE PREPARED FOR THESE LOCALLY STRONG WINDS. RJM
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 12, 4:02 PM MST | Winter Weather Advisory | CYS | Albany, Carbon | 37 hr |
Nearby
High Wind Warnings in Wyoming, 2009Every high wind warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.