Special Weather Statement, NWS Riverton, WY

Issued

Aug 6, 2021, 2:12 PM MDT (20:12 UTC)

Expired

Aug 6, 2021, 2:45 PM MDT

In force

33 min

Issued by

NWS Riverton, WY

Hail

0.50 in

Wind

40

County Natrona County, WY

The Riverton/Lander radar (KRIW), 138 km from the middle of the area, began a volume at 20:13 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.

203 
WWUS85 KRIW 062012
SPSRIW

Special Weather Statement
National Weather Service Riverton WY
212 PM MDT Fri Aug 6 2021
 
WYZ019-020-062045-
Green Mountains and Rattlesnake Range-Natrona County Lower
Elevations-
212 PM MDT Fri Aug 6 2021

...A strong thunderstorm will impact portions of south central
Natrona County through 245 PM MDT...

At 212 PM MDT, Doppler radar was tracking a strong thunderstorm near
Independence Rock, or 38 miles east of Jeffrey City, moving east at
35 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
  Alcova.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

If on or near Pathfinder and Alcova Reservoirs, get out of the water 
and move indoors or inside a vehicle. Remember, lightning can strike 
out to 10 miles from the parent thunderstorm. If you can hear 
thunder, you are close enough to be struck by lightning. Move to 
safe shelter now! Do not be caught on the water in a thunderstorm.

A Severe Thunderstorm Watch remains in effect until 800 PM MDT for
central Wyoming.

&&

LAT...LON 4243 10721 4254 10723 4268 10663 4243 10658
TIME...MOT...LOC 2012Z 262DEG 32KT 4247 10708 

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

$$

Vorst

Special Weather Statements in Wyoming, 2021Every special weather statement in 2021

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.