Alert archive / Wyoming / High Wind Warnings in 2012
High Wind Warning 22, NWS Cheyenne, WY
NWS Cheyenne, WY issued this high wind warning at Apr 7, 2012, 1:37 AM MDT for Albany County, Laramie County, Wyoming. It was in force for 3 hr. 4 reports 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
- Apr 7, 2012, 1:37 AM MDT (07:37 UTC)
- Expired
- Apr 7, 2012, 4:14 AM MDT
- In force
- 3 hr
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 50 km from the middle of the area, began a volume at 07:34 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 |
|---|---|---|---|
| Apr 7, 1:52 AM MDT | HIGH SUST WINDS 43 | 1 Nnw Whitaker, WY | GUSTS TO 53 MPH. GUSTS TO 60 MPH AT 110 AM. |
| Apr 7, 1:52 AM MDT | HIGH SUST WINDS 43 | 4 Ssw I-25 Exit 7, WY | GUSTS TO 56 MPH |
| Apr 7, 2:00 AM MDT | NON-TSTM WND GST 61 | Cheyenne, WY | SUSTAINED AT 45 MPH |
| Apr 7, 2:51 AM MDT | HIGH SUST WINDS 40 | 4 Ssw I-25 Exit 7, WY | GUSTS TO 57 MPH. GUST TO 60 MPH AT 206 AM. |
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 00:00Z, 7.6 hours before the alert went out and 245 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
- 5117 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
107 WWUS75 KCYS 070737 NPWCYS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 137 AM MDT SAT APR 7 2012 ...STRONG WESTERLY WINDS OVER LARAMIE COUNTY THROUGH EARLY MORNING... .A TIGHT PRESSURE GRADIENT OVER SOUTHEAST WYOMING WILL COMBINE WITH STRONG WINDS JUST OFF THE SURFACE TO PRODUCE STRONG WESTERLY WINDS THROUGH THE EARLY MORNING. WINDS WILL BEGIN TO WEAKEN AFTER SUNRISE AS THE PRESSURE GRADIENT WEAKENS. WYZ117-118-071200- /O.NEW.KCYS.HW.W.0022.120407T0737Z-120407T1200Z/ SOUTH LARAMIE RANGE FOOTHILLS-CENTRAL LARAMIE COUNTY- INCLUDING THE CITIES OF...HORSE CREEK...HARRIMAN...WHITAKER... CHEYENNE 137 AM MDT SAT APR 7 2012 ...HIGH WIND WARNING IN EFFECT UNTIL 6 AM MDT EARLY THIS MORNING... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 6 AM MDT EARLY THIS MORNING. * TIMING...THROUGH 6 AM THIS MORNING. * WINDS...SUSTAINED WINDS AT 40 TO 45 MPH WITH GUSTS TO 60 MPH. * IMPACTS...MOTORISTS TRAVELING THROUGH LARAMIE COUNTY SHOULD EXERCISE CAUTION...ESPECIALLY THOSE DRIVING HIGH PROFILE VEHICLES ALONG INTERSTATE 25. THERE IS A BLOW OVER RISK FOR HIGH PROFILE VEHICLES TRAVELING ALONG INTERSTATE 25 BETWEEN MILEPOSTS 2 AND 9 BECAUSE OF STRONG WINDS. 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. && $$ FINCH
1 follow-up statement
379 WWUS75 KCYS 071014 NPWCYS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHEYENNE WY 414 AM MDT SAT APR 7 2012 ...THE HIGH WIND WARNING FOR WESTERN AND CENTRAL LARAMIE COUNTY HAS BEEN CANCELLED... .WESTERLY WINDS OVER LARAMIE COUNTY HAVE WEAKENED CONSIDERABLY OVER THE LAST HOUR AS THE SURFACE PRESSURE GRADIENT OVER SOUTHEAST WYOMING HAS DECREASED. WYZ117-118-071115- /O.CAN.KCYS.HW.W.0022.000000T0000Z-120407T1200Z/ SOUTH LARAMIE RANGE FOOTHILLS-CENTRAL LARAMIE COUNTY- INCLUDING THE CITIES OF...HORSE CREEK...HARRIMAN...WHITAKER... CHEYENNE 414 AM MDT SAT APR 7 2012 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE HIGH WIND WARNING. OBSERVATIONS SHOW THAT THE WESTERLY WINDS HAVE WEAKENED OVER THE LAST HOUR ACROSS CENTRAL AND WESTERN LARAMIE COUNTY. A FEW WIND GUSTS TO 40 MPH WILL STILL BE POSSIBLE THROUGH THE MORNING. $$ FINCH
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 2:31 AM MDT | Red Flag Warning | CYS | 17 hr | |
| Apr 7, 2:41 PM MDT | Fire Weather Watch | CYS | 6 hr |
Nearby
High Wind Warnings in Wyoming, 2012Every high wind warning in 2012
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.