Alert archive / Wyoming / High Wind Warnings in 2007
High Wind Warning 17, NWS Cheyenne, WY
NWS Cheyenne, WY issued this high wind warning at Nov 26, 2007, 9:21 PM MST for Weston County, Wyoming. It took effect at Nov 27, 2007, 7:00 AM MST. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Nov 26, 2007, 9:21 PM MST (04:21 UTC)
- In effect from
- Nov 27, 2007, 7:00 AM MST
- Expired
- Nov 27, 2007, 4:41 PM MST
- In force
- 10 hr
- Issued by
- NWS Cheyenne, WY
County Weston County, WY
The radar
The Rapid City radar (KUDX), 143 km from the middle of the area, began a volume at 04:19 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.
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 4.4 hours before the alert went out and 137 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
- 1939 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 146 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 270421 NPWCYS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 921 PM MST MON NOV 26 2007 ...STRONG WEST WINDS WILL DEVELOP OVER MUCH OF SOUTHEAST WYOMING AROUND SUNRISE TUESDAY MORNING AND CONTINUE THROUGH LATE TUESDAY AFTERNOON... .A STRONG COLD FRONT WILL PUSH SOUTH FROM MONTANA INTO WYOMING DURING THE DAY TUESDAY. THIS WILL CAUSE AN INCREASING DIFFERENCE IN PRESSURE OVER WYOMING BETWEEN THE COLD FRONT AND A HIGH PRESSURE AREA OVER WESTERN COLORADO. ADDITIONALLY...VERY STRONG WEST TO SOUTHWEST WINDS ALOFT WILL BE MIXING DOWN TO THE SURFACE. WYZ059-061>067-271230- /O.UPG.KCYS.HW.A.0014.071127T1200Z-071127T2300Z/ /O.NEW.KCYS.HW.W.0017.071127T1400Z-071128T0000Z/ CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE- NORTH LARAMIE RANGE-LARAMIE VALLEY-LARAMIE RANGE-PLATTE- INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA... MEDICINE BOW...CENTENNIAL...GARRETT...LARAMIE...BUFORD... HORSE CREEK...WHEATLAND...GUERNSEY 921 PM MST MON NOV 26 2007 ...HIGH WIND WARNING IN EFFECT FROM 7 AM TO 5 PM MST TUESDAY... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 7 AM TO 5 PM MST TUESDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. WEST TO SOUTHWEST WINDS WILL INCREASE LATE TONIGHT AND TUESDAY MORNING OVER SOUTHEAST WYOMING. THE STRONG WINDS WILL PERSIST UNTIL LATE TUESDAY AFTERNOON. AT LOWER ELEVATIONS THE WARNING AREA...WIND SPEEDS WILL BE FROM 35 TO 45 MPH WITH GUSTS TO 60 MPH. FOR THE MOUNTAINS...WINDS WILL BE SUSTAINED AT 40 TO 50 MPH WITH GUSTS TO 70 MPH POSSIBLE DURING THE DAY TUESDAY. SOME CITIES INCLUDED IN THE HIGH WIND WARNING ARE...LARAMIE... RAWLINS...SARATOGA...WHEATLAND...CHUGWATER...DOUGLAS...GLENROCK AND MEDICINE BOW. THE WARNING ALSO INCLUDES LARGE PORTIONS OF INTERSTATE 25 AND INTERSTATE 80 IN SOUTHEAST WYOMING. PEOPLE PLANNING TRAVEL IN SOUTHEAST WYOMING ON TUESDAY SHOULD BE READY FOR STRONG WINDS AND SUDDEN GUSTS...AND MAY WANT TO CONSIDER POSTPONING OR DELAYING THEIR TRAVEL PLANS. THOSE IN LIGHTWEIGHT OR HIGH PROFILE VEHICLES ARE MOST SUSCEPTIBLE TO THE DANGER OF HIGH WINDS. 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. $$ WEILAND
3 follow-up statements
000 WWUS75 KCYS 271120 NPWCYS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 420 AM MST TUE NOV 27 2007 ...STRONG WEST WINDS WILL DEVELOP OVER MUCH OF SOUTHEAST WYOMING THIS MORNING AND CONTINUE THROUGH THIS AFTERNOON... .A STRONG COLD FRONT AND LOW PRESSURE AREA WILL MOVE SOUTHEAST FROM IDAHO AND MONTANA ACROSS WYOMING TODAY. THIS WILL CAUSE AN LARGE DIFFERENCE IN PRESSURE OVER WYOMING BETWEEN THE LOW PRESSURE TO THE NORTH AND A HIGH PRESSURE AREA OVER COLORADO. THERE WILL ALSO BE SOME VERY STRONG WINDS ALOFT NEAR MOUNTAIN TOP LEVEL. WYZ059-061>067-280000- /O.CON.KCYS.HW.W.0017.071127T1400Z-071128T0000Z/ CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE- NORTH LARAMIE RANGE-LARAMIE VALLEY-LARAMIE RANGE-PLATTE- INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA... MEDICINE BOW...CENTENNIAL...GARRETT...LARAMIE...BUFORD... HORSE CREEK...WHEATLAND...GUERNSEY 420 AM MST TUE NOV 27 2007 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. WEST OR SOUTHWEST WINDS WILL INCREASE EARLY THIS MORNING OVER SOUTHEAST WYOMING...AND CONTINUE UNTIL LATE THIS AFTERNOON. IN THE LOWER ELEVATIONS OF THE WARNING AREA...WIND SPEEDS WILL BE FROM 30 TO 40 MPH WITH A FEW GUSTS TO 60 MPH. FOR THE MOUNTAINS... WINDS WILL BE SUSTAINED AT 35 TO 50 MPH WITH A FEW GUSTS OF 65 TO 70 MPH. SOME CITIES INCLUDED IN THE HIGH WIND WARNING ARE...LARAMIE... RAWLINS...SARATOGA...WHEATLAND...CHUGWATER...DOUGLAS...GLENROCK AND MEDICINE BOW. THE WARNING ALSO INCLUDES LARGE PORTIONS OF INTERSTATE 25 AND INTERSTATE 80 IN SOUTHEAST WYOMING. PEOPLE PLANNING TRAVEL IN SOUTHEAST WYOMING TODAY SHOULD BE PREPARED TO ENCOUNTER STRONG WINDS AND SUDDEN GUSTS. THOSE IN LIGHTWEIGHT OR HIGH PROFILE VEHICLES ARE MOST SUSCEPTIBLE TO THE DANGER OF HIGH WINDS. $$
000 WWUS75 KCYS 271914 NPWCYS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 1214 PM MST TUE NOV 27 2007 ...STRONG WEST WINDS WILL CONTINUE OVER MUCH OF SOUTHEAST WYOMING THIS AFTERNOON... .A STRONG COLD FRONT AND LOW PRESSURE AREA WILL MOVE SOUTHEAST FROM IDAHO AND MONTANA ACROSS WYOMING TODAY. THIS WILL CAUSE AN LARGE DIFFERENCE IN PRESSURE OVER WYOMING BETWEEN THE LOW PRESSURE TO THE NORTH AND A HIGH PRESSURE AREA OVER COLORADO. THERE WILL ALSO BE SOME VERY STRONG WINDS ALOFT NEAR MOUNTAIN TOP LEVEL. WYZ059-061>067-280000- /O.CON.KCYS.HW.W.0017.000000T0000Z-071128T0000Z/ CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE- NORTH LARAMIE RANGE-LARAMIE VALLEY-LARAMIE RANGE-PLATTE- INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA... MEDICINE BOW...CENTENNIAL...GARRETT...LARAMIE...BUFORD... HORSE CREEK...WHEATLAND...GUERNSEY 1214 PM MST TUE NOV 27 2007 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. WEST TO SOUTHWEST WINDS WILL CONTINUE THROUGH THIS AFTERNOON. IN THE LOWER ELEVATIONS OF THE WARNED AREA...WIND SPEEDS WILL BE FROM 30 TO 40 MPH WITH A FEW GUSTS TO 60 MPH. IN THE MOUNTAINS... WINDS WILL BE SUSTAINED AT 35 TO 50 MPH WITH A FEW GUSTS OF 65 TO 70 MPH. IN FACT...WINDS HAVE ALREADY GUSTED TO 70 MPH AT ARLINGTON. PEOPLE PLANNING TRAVEL...ESPECIALLY ALONG INTERSTATE 80 AROUND ELK MOUNTAIN...IN SOUTHEAST WYOMING TODAY SHOULD BE PREPARED TO ENCOUNTER STRONG CROSSWINDS AND SUDDEN GUSTS. THOSE IN LIGHTWEIGHT OR HIGH PROFILE VEHICLES ARE MOST SUSCEPTIBLE TO THE DANGER OF HIGH WINDS. $$ HAHN
000 WWUS75 KCYS 272341 NPWCYS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 441 PM MST TUE NOV 27 2007 WYZ059-061>067-280045- /O.CAN.KCYS.HW.W.0017.000000T0000Z-071128T0000Z/ CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE- NORTH LARAMIE RANGE-LARAMIE VALLEY-LARAMIE RANGE-PLATTE- INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA... MEDICINE BOW...CENTENNIAL...GARRETT...LARAMIE...BUFORD... HORSE CREEK...WHEATLAND...GUERNSEY 441 PM MST TUE NOV 27 2007 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE HIGH WIND WARNING AS WINDS HAVE DECREASED BELOW WARNING LEVELS. $$
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 Nov 26, 9:09 PM MST, 12 minutes earlier.
Area forecast discussion, Nov 26, 9:09 PM MST, 12 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
908 MST MON NOV 26 2007
.DISCUSSION...AFTER LOOKING AT THE 00Z MODEL RUNS AND THE CURRENT
DATA HAVE OPTED TO UPGRADE THE CURRENT HIGH WIND WATCH TO A HIGH WIND
WARNING. HOWEVER IT WILL BE A MARGINAL EVENT FOR THE WIND CORRIDOR.
THE KCAG TO KCPR HEIGHT DIFFERENCE AT 700 MB INCREASES TO ABOUT 60
ON TUESDAY AND 700 MB WINDS INCREASE TO 45 KNOTS. SURFACE PRESSURE
GRADIENT WILL ALSO BE TIGHTENING AHEAD OF THE FRONT WITH 3 HOUR
SURFACE PRESSURE FALLS OF 4 MB OR SO MOVING INTO CENTRAL MONTANA
THIS EVENING. A PACIFIC COLD FRONT MOVES ACROSS THE CWA FROM MID
AFTERNOON THROUGH EARLY EVENING ON TUESDAY. THE SURFACE PRESSURE
RISES BEHIND THE FRONT WILL CREATE A WEAK BORA EVENT...BUT MAY BE
ENOUGH TO KEEP HIGH WINDS GOING INTO THE EARLY EVENING. A PERIOD
OF HIGH WINDS MAY ALSO EXTEND OUT ONTO THE SOUTHEAST WYOMING PLAINS
BEHIND THE FRONT...BUT WILL KEEP GUSTS TO 45 MPH IN PLACE FOR NOW.
CURRENT OBSERVATIONS JUST UPSTREAM OF THE CWA INDICATE GUSTS BETWEEN
40 AND 50 MPH ALREADY.
&&
.PREVIOUS DISCUSSION.../ISSUED AT 108 PM MST MON NOV 26 2007/
SHORT TERM...TONIGHT THROUGH WEDNESDAY...
MAIN FORECAST PROBLEM IN THE SHORT TERM WILL BE THE INCREASING WINDS
TOMORROW AND WHETHER TO UPGRADE THE HIGH WIND WATCH OR NOT.
LATEST SURFACE ANALYSIS SHOWS A COLD FRONT STRECHNG FROM NORTH
DAKOTA INTO MONTANA WITH SOME SNOW IN THE COLD AIR AS WELL AS
TEMPERATURES IN THE TEENS. THIS FRONT IS EXPECTED TO MOVE ACROSS
THE CWA LATE TUESDAY AFTERNOON THROUGH WEDNESDAY.
GUIDANCE SHOWING 50 TO 60 KNOT WINDS AT 7H BEGINNING TUESDAY
MORNING AND CONTINUING FOR ABOUT 12 HOURS OR UNTIL AROUND FROPA
DURING THE AFTERNOON OR EARLY EVENING HOURS.
AHEAD OF THE FRONT TUESDAY TEMPERATURES WILL WARM UP NICELY
ESPECIALLY ON THE EASTERN PLAINS OF WYOMING AND INTO THE
PANHANDLE. HOWEVER WEDNESDAY WILL BE SOME 20 TO 30 DEGREES COLDER.
WITH THE STRONG COLD AIR ADVECTION BELIEVE THERE WILL BE A CHANCE
OF SOME LIGHT SNOW FROM TUESDAY AFTERNOON THROUGH MIDDAY
WEDNESDAY. THE SNOW WILL MOVE ACROSS THE CWA FROM WEST TO EAST. AT
THIS TIME FEEL THERE MAY BE A COUPLE OF INCHES IN THE HIGHER
ELEVATIONS BUT LITTLE ACCUMULATIONS AT LOWER LEVELS.
LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY DECEMBER 3RD.
WEDNESDAY NIGHT...FLOW ALOFT BACKS TO WEST. INCREASING MID/HIGH
CLOUDS AHEAD OF APPROACHING SHORTWAVE TROUGH. NO PRECIPITATION SINCE
LOW/MID LEVELS WILL BE RELATIVELY DRY.
THURSDAY...SHORTWAVE TROUGH MOVES ACROSS WYOMING WITH LOW/MID LEVELS
MOISTENING UP THUS HAVE INSERTED SCATTERED POPS ACROSS THE NORTHWEST
HALF OF OUR FORECAST AREA IN THE AFTERNOON. HIGHS MAINLY 30S PER
PROGGED 1000-500 MB THICKNESSES NEAR 5370 METERS.
FRIDAY...FLOW ALOFT BACKS TO WEST. LOOKS LIKE ENOUGH OROGRAPHICS FOR
SCATTERED POPS ACROSS THE SNOWY RANGE. LOW LEVEL UPSLOPE EAST OF THE
MOUNTAINS WILL MAINTAIN CLOUD COVER. HIGHS IN THE 30S WITH PROGGED
THICKNESSES NEAR 5310 METERS.
SATURDAY...BROAD BASED TROUGHINESS ACROSS THE ROCKIES. ENOUGH LOW
LEVEL MOISTURE AND CYCLONIC FLOW ALOFT FOR SLIGHT CHANCE OF SNOW
SHOWERS. MAXIMA IN THE 30S PER PROGGED 1000-500 MB THICKNESSES NEAR
5310 METERS.
SUNDAY...DRYING TREND AS FLOW ALOFT VEERS TO NORTHWEST AND LOW/MID
LEVELS DRY OUT. CANNOT RULE OUT OROGRAPHIC PRECIPITATION NEAR THE
SNOWY RANGE WITH PROGGED MOISTURE FLOW FROM UPSTREAM. HIGHS IN THE
30S PER PROGGED THICKNESSES NEAR 5370 METERS.
MONDAY...RIDGING ALOFT AMPLIFIES ACROSS WESTERN WYOMING THUS EVEN
MORE DRYING. WARMING TREND CONTINUES AT MOST LOCALES.
&&
.AVIATION...VFR CONDITIONS EXPECTED NEXT 24 HOURS. WINDS WILL
INCREASE AND BECOME QUITE GUSTY ON TUESDAY. TURBULENCE WILL BE A
CONCERN TUESDAY.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...HIGH WIND WARNING FROM 7 AM TUESDAY TO 4 PM TUESDAY FOR
WYZ059-WYZ061-WYZ062-WYZ063-WYZ064-WYZ065-WYZ066-WYZ067-
NE...NONE.
&&
WEILANDHazardous weather outlook, Nov 26, 5:30 AM MST, 15 hours 51 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 530 AM MST MON NOV 26 2007 WYZ059>070-271230- CONVERSE-NIOBRARA-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE- NORTH LARAMIE RANGE-LARAMIE VALLEY-LARAMIE RANGE-PLATTE-GOSHEN- CHEYENNE FOOTHILLS-PINE BLUFFS- 530 AM MST MON NOV 26 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A HIGH WIND WATCH IS IN EFFECT FOR TUESDAY. REFER TO NWS PRODUCT WWUS75 FOR MORE INFORMATION. LIGHT SNOW WILL BE POSSIBLE WEDNESDAY THEN AGAIN FRIDAY THROUGH SUNDAY. .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 NEZ001>003-019>021-054-055-271230- SIOUX-DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL- CHEYENNE- 530 AM MST MON NOV 26 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY LIGHT SNOW WILL BE POSSIBLE WEDNESDAY THEN AGAIN FRIDAY THROUGH SUNDAY. .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
Nearby
High Wind Warnings in Wyoming, 2007Every high wind warning in 2007
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.