Alert archive / Wyoming / High Wind Watches in 2011
High Wind Watch 5, NWS Riverton, WY
NWS Riverton, WY issued this high wind watch at Feb 15, 2011, 3:15 PM MST for Fremont County, Natrona County, Sweetwater County, Wyoming. It took effect at Feb 16, 2011, 6:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 15, 2011, 3:15 PM MST (22:15 UTC)
- In effect from
- Feb 16, 2011, 6:00 PM MST
- Expired
- Feb 16, 2011, 4:06 AM MST
- In force
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Natrona County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 65 km from the middle of the area, began a volume at 22:19 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
Grand Junction, CO (KGJT), launched 12:00Z, 10.3 hours before the alert went out and 382 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
- 2183 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 186 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 Riverton, WY wrote its last area forecast discussion before this high wind watch went out at Feb 15, 4:11 AM MST, 11 hours 4 minutes earlier.
Area forecast discussion, Feb 15, 4:11 AM MST, 11 hours 4 minutes before
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</html>The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 14, 9:39 PM MST | High Wind Warning | RIW | Fremont, Hot Springs, Park | 18 hr |
Nearby
High Wind Watches in Wyoming, 2011Every high wind watch in 2011
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.