Alert archive / Wyoming / Snow Squall Warnings in 2021
Snow Squall Warning 10, NWS Cheyenne, WY
NWS Cheyenne, WY issued this snow squall warning at Feb 3, 2021, 1:30 PM MST for Albany County, Carbon County, Wyoming. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Feb 3, 2021, 1:30 PM MST (20:30 UTC)
- Expired
- Feb 3, 2021, 2:15 PM MST
- In force
- 45 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
Counties Albany County, WY, Carbon County, WY
The radar
The Cheyenne radar (KCYS), 113 km from the middle of the area, began a volume at 20:32 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 12:00Z, 8.5 hours before the alert went out and 258 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
- 1710 m above ground
- 0-6 km bulk shear
- 89 kt
- 0-1 km storm-relative helicity
- 221 m²/s²
- 0-3 km storm-relative helicity
- 298 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
305
WWUS55 KCYS 032038 CCA
SQWCYS
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Cheyenne WY 130 PM MST
Wed Feb 3 2021
WYC001-007-032115-
/O.NEW.KCYS.SQ.W.0010.210203T2030Z-210203T2115Z/
Carbon WY-Albany WY-
130 PM MST Wed Feb 3 2021
The National Weather Service in Cheyenne has issued a
* Snow Squall Warning for...
Eastern Carbon County in south central Wyoming...
Central Albany County in southeastern Wyoming...
* Until 215 PM MST.
* At 130 PM MST, a dangerous snow squall was located over Arlington,
moving northeast at 35 mph.
HAZARD...Extremely poor visibility in snow.
SOURCE...Radar and webcams.
IMPACT...Expect hazardous road conditions.
This includes Interstate 80 in Wyoming between mile markers 272 and
292.
Locations impacted include...
Arlington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Consider avoiding or delaying travel until the snow squall passes
your location. If you must travel, use extra caution and allow extra
time. Rapid changes in visibility and slick road conditions may lead
to accidents.
Serious injuries and deaths may result from people exiting their
vehicles during a snow squall. Drivers may not be able to see you or
to stop! If stopped on the roadway or involved in an accident,
quickly exit your vehicle move as far away from the roadway as
possible ONLY when it is safe to do so. Do not stand along or near
the roadway, since approaching vehicles may be unable to maintain
control.
&&
LAT...LON 4154 10612 4159 10623 4161 10621 4156 10608
4144 10589 4141 10594 4144 10598
TIME...MOT...LOC 2030Z 232DEG 30KT 4233 10531
$$
CoxThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 12:14 PM MST | Snow Squall Warning | CYS | Carbon | 49 min |
| Feb 3, 12:31 PM MST | Snow Squall Warning | CYS | Albany, Carbon | 59 min |
| Feb 3, 12:46 PM MST | Snow Squall Warning | CYS | Carbon | 59 min |
| Feb 3, 1:30 PM MST | Snow Squall Warning | CYS | Albany, Carbon | 45 min |
| Feb 3, 2:15 PM MST | Snow Squall Warning | CYS | Albany, Carbon | 60 min |
| Feb 3, 3:00 PM MST | Snow Squall Warning | CYS | Albany | 45 min |
| Feb 3, 3:41 PM MST | Snow Squall Warning | CYS | Albany | 49 min |
Nearby
Snow Squall Warnings in Wyoming, 2021Every snow squall warning in 2021
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.