Alert archive / Wyoming / High Wind Watches in 2007

High Wind Watch 18, NWS Cheyenne, WY

December 29, 2007

NWS Cheyenne, WY issued this high wind watch at Dec 29, 2007, 4:33 AM MST. It took effect at Dec 29, 2007, 11:00 PM MST. It was in force for .

The area

The counties it named.

The facts

Issued: Dec 29, 2007, 4:33 AM MST (11:33 UTC)
In effect from: Dec 29, 2007, 11:00 PM MST
Expired: Dec 29, 2007, 12:37 PM MST
In force
Issued by: NWS Cheyenne, WY

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 29, 3:52 AM MST, 41 minutes earlier.

Area forecast discussion, Dec 29, 3:52 AM MST, 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
352 AM MST SAT DEC 29 2007

.SHORT TERM...TODAY THROUGH SUNDAY...
WINDS WILL BE THE PRIMARY CONCERN IN THE SHORT TERM. NORTHWESTERLY
FLOW ALOFT WILL PREVAIL AND WILL BECOME QUITE STRONG TONIGHT AND
SUN. SURFACE WINDS WILL BE BRISK TODAY FROM THE WEST TO SOUTHWEST
WITH SURFACE HIGH PRESSURE OVER WESTERN CO AND LOW PRESSURE OVER MT.
WILL MENTION AREAS OF BLOWING SNOW TODAY OVER THE WY PORTION OF THE
FORECAST AREA...WITH PATCHY BLOWING SNOW OVER THE WESTERN NEB
PANHANDLE. SOME LIGHT OROGRAPHIC SNOW WILL BE POSSIBLE IN THE
HIGHEST MOUNTAINS AND IN AREAS OF WESTERN CARBON COUNTY WEST OF THE
CONTINENTAL DIVIDE. TEMPERATURES TODAY WILL BE COLDER THAN NORMAL
BUT NOT AS COLD AS FRI. WINDS WILL STRENGTHEN TONIGHT AS THE LOW
LEVEL PRESSURE GRADIENT INCREASES AND DEVELOPS FAVORABLE DIRECTIONAL
ALIGHNMENT WITH MID AND UPPER FLOW. MODELS PROG 60+ KNOTS AT 700 MB
TONIGHT AS UPPER AND MID LEVEL FLOW MIXES DOWN. WILL HOIST A HIGH
WIND WATCH FOR LATE TONIGHT THROUGH SUN FOR THE MOUNTAINS AND
ADJACENT FOOTHILLS WESTWARD...A BROAD REGION THAT FAVORS STRONG
WESTERLY WINDS. A WIND ADVISORY WILL LIKELY BE NEEDED FOR THE
WESTERN NEB PANHANDLE. ADIABATIC HEATING ASSOCIATED WITH THE
DOWNSLOPE WINDS WILL BOOST TEMPS SUN AFTERNOON INTO THE 30S EAST
OF THE MOUNTAINS...BUT AREAS OF BLOWING SNOW WILL EXIST BEFORE THE
SNOW BEGINS TO DEVELOP A CRUST. A COLD FRONT WILL PASS THROUGH THE
FORECAST AREA SUN. POSTFRONTAL MOISTURE WILL INCREASE WITH LIGHT
SNOW BECOMING POSSIBLE OVER MUCH OF THE AREA SUN AFTERNOON. WINDS
WILL BEGIN TO DECREASE POSTFRONTALLY SUN.

.LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...STRONG WNW WINDS WILL
CONTINUE INTO SUNDAY EVENING BUT THEY WILL BE LOWERING BELOW HIGH
WIND LEVELS.  WINDY/COLD AND RAW CONDITIONS WILL PREVAIL FOR SUNDAY
NIGHT THROUGH MONDAY NIGHT AS 1000-500MB THICKNESSES STAY BELOW 520
DECAMETERS.  ALTHOUGH MAIN ENERGY WITH UPPER TROUGH WILL BE SLIDING
SOUTH OF THE CWA SUNDAY EVENING...SOME CHANNELED VORTICITY WILL HANG
AROUND INTO MONDAY NIGHT.  THIS WILL KEEP SOME SNOW SHOWERS OVER THE
MOUNTAINS AND A FEW OVER THE NORTHERN CWA. ON TUESDAY...FLOW ALOFT
WILL BACK TO WNW AHEAD OF STRONG UPPER RIDGING BUILDING IN FROM THE
WEST.  TEMPS WILL START A WARMING TREND TUESDAY ALTHOUGH SNOW COVER
WILL HINDER SOME.  A MORE PRONOUNCED WARMUP WILL OCCUR FOR WED AND
THU...AGAIN WITH SNOW COVER CONSIDERATIONS...UNDER THE UPPER
RIDGING.  A COUPLE OF FAIRLY WEAK UPPER TROUGHS WILL MOVE IN
THURSDAY NIGHT AND FRI CAUSING INCREASING CLOUDS AND WINDS WITH A
FEW SNOW SHOWERS OVER THE MOUNTAINS.

&&

.AVIATION...VFR CONDITIONS EXPECTED AT MOST TERMINALS TODAY AND
TONIGHT. STRONG AND GUSTY WINDS WILL CREATE TURBULENCE PARTICULARLY
OVER AND ADJACENT TO MOUNTAINS. AREAS OF BLOWING SNOW ARE EXPECTED
TODAY AND SUN.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...HIGH WIND WATCH FROM 11 PM SATURDAY TO 5 PM SUNDAY FOR WYZ061-
     WYZ062-WYZ063-WYZ064-WYZ065-WYZ066-WYZ067-WYZ069.
NE...NONE.

&&

SHORT TERM/AVIATION...JR
LONG TERM....JLH

Hazardous weather outlook, Dec 28, 5:20 PM MST, 11 hours 13 minutes before

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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 29, 12:00 PM MST	Winter Storm Warning	CYS		23 hr
Dec 29, 12:37 PM MST	High Wind Warning	CYS		23 hr

Nearby

High Wind Watches in Wyoming, 2007 Every high wind watch 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.