Alert archive / Wyoming / High Wind Watches in 2020
High Wind Watch 30, NWS Cheyenne, WY
NWS Cheyenne, WY issued this high wind watch at Nov 12, 2020, 1:21 AM MST for 6 counties in Wyoming. It took effect at Nov 12, 2020, 11:00 PM MST. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Nov 12, 2020, 1:21 AM MST (08:21 UTC)
- In effect from
- Nov 12, 2020, 11:00 PM MST
- Expired
- Nov 13, 2020, 1:24 AM MST
- In force
- 2 hr
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Carbon County, WY, Converse County, WY, Goshen County, WY, Laramie County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 103 km from the middle of the area, began a volume at 08:26 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
Riverton, WY (KRIW), launched 00:00Z, 8.4 hours before the alert went out and 277 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
- 2080 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 43 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 Nov 11, 10:34 PM MST, 2 hours 47 minutes earlier.
Area forecast discussion, Nov 11, 10:34 PM MST, 2 hours 47 minutes before
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</html>Hazardous weather outlook, Nov 11, 8:21 PM MST, 5 hours before
Hazardous Weather Outlook National Weather Service Cheyenne WY 821 PM MST Wed Nov 11 2020 NEZ002-003-019>021-054-055-095-096-WYZ101>109-111>119-130330- Dawes-Box Butte-Scotts Bluff County-Banner County-Morrill- Kimball County-Cheyenne-North Sioux-South Sioux- Converse County Lower Elevations-Niobrara County- North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-Central Carbon County- 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- 821 PM MST Wed Nov 11 2020 This hazardous weather outlook is for the western Nebraska Panhandle...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TONIGHT Occasional light snow showers will accompany a upper level disturbance and cold frontal passage. Gusty winds of 30 to 40 mph will create areas of blowing snow. Two to four inches of snow will fall over the Snowy and Sierra Madre Ranges. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY Widespread very strong winds are possible Friday night and Saturday. .Spotter information statement... Spotter activation will not be required. WYZ110-130330- North Snowy Range Foothills- 821 PM MST Wed Nov 11 2020 This hazardous weather outlook is for a portion of south central Wyoming. .DAY ONE...TONIGHT Strong west winds with gusts of 55 to 65 mph are expected late tonight. High Wind Warning becomes effective at 2 AM MST. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY Strong west winds with gusts of 55 to 65 mph will continue through Thursday afternoon. The High Wind Warning remains in effect until 2 PM MST. .Spotter information statement... Spotters are encouraged to report strong winds or other significant weather to the National Weather Service in Cheyenne.
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 11, 8:10 PM MST | High Wind Warning | CYS | Albany, Carbon | 20 hr |
Nearby
High Wind Watches in Wyoming, 2020Every high wind watch in 2020
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.