Alert archive / Wyoming / High Wind Warnings in 2021

High Wind Warning 4, NWS Riverton, WY

January 19, 2021Park County, Wyoming

NWS Riverton, WY issued this high wind warning at Jan 19, 2021, 9:37 PM MST for Park County, Wyoming. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 19, 2021, 9:37 PM MST (04:37 UTC)
Expired: Jan 20, 2021, 7:00 AM MST
In force: 9 hr
Issued by: NWS Riverton, WY

County Park County, WY

The radar

The Billings radar (KBLX), 167 km from the middle of the area, began a volume at 04:41 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, 4.6 hours before the alert went out and 187 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2608 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

217 
WWUS75 KRIW 200437
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
937 PM MST Tue Jan 19 2021

WYZ003-201400-
/O.NEW.KRIW.HW.W.0004.210120T0437Z-210120T1400Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
937 PM MST Tue Jan 19 2021

...HIGH WIND WARNING IN EFFECT UNTIL 7 AM MST WEDNESDAY...

* WHAT...Southwest winds 25 to 35 mph with gusts up to 65 mph.

* WHERE...Cody Foothills.

* WHEN...Until 7 AM MST Wednesday.

* IMPACTS...Mainly to transportation. Strong cross winds will be
  hazardous to lightweight and high profile vehicles. The most
  prone areas for high wind will be along Wyoming Highway 120, 
  mainly between the Wyoming Highway 296 intersection and Clark, 
  and south of Cody near the dump. Wind gusts from Wapiti to the 
  west side of Cody will also be strong. 

* ADDITIONAL DETAILS...Wind speeds in Cody are likely to range
  from 20 to 30 mph with gusts 35 to 45 mph.

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 more information from the National Weather Service visit
https://weather.gov/riw

1 follow-up statement

777 
WWUS75 KRIW 201347
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
647 AM MST Wed Jan 20 2021

WYZ003-201500-
/O.EXP.KRIW.HW.W.0004.000000T0000Z-210120T1400Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
647 AM MST Wed Jan 20 2021

...HIGH WIND WARNING WILL EXPIRE AT 7 AM MST THIS MORNING...

Gusty winds will continue through the morning, however, high 
winds are not expected. An isolated gust over 60 mph may occur 
through late morning.

$$

For more information from the National Weather Service visit
https://weather.gov/riw

Nearby

High Wind Warnings in Wyoming, 2021 Every high wind 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.