Wyoming · September 10, 2023

Wyoming hail map — September 10, 2023

NOAA radar detected hail of an inch or more over 1 Wyoming city on September 10, 2023. The largest stones — 1.00″, quarter size — fell over Casper.

Swath over Casper on September 10, 2023 — 1.00″ hail. Each city below has its own map for this storm.
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Cities hit
1
in Wyoming
Largest stone
1.00″
quarter size
Impact rating
3/10
from stone size

Sizes come from NOAA radar, which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

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Wyoming cities hit on September 10, 2023

What people on the ground measured in Wyoming on September 10, 2023

12 reports filed with the National Weather Service — 7 from trained observers or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.

  • 1.75″ golf ball size Public
    6 WSW Midwest, WY2:33 PM MDTNatrona County

    Traveler on I25 reported quarter to golf ball sized hail on road.

  • 1.50″ half dollar size Trained Spotter
    1 ESE Yoder, WY12:06 AM MDTGoshen County

    Hail accumulating to several inches deep.

  • 1.50″ half dollar size Trained Spotter
    12 N Pavillion, WY2:27 PM MDTFremont County

    Storm chaser measured ping pong ball sized hail on Arapahoe Ranch Rd.

  • 1.25″ half dollar size Public
    6 SW Lander, WY4:37 PM MDTFremont County

    Hail near entrance to Sinks Canyon State Park. Measured 1 1/3 inch hail, with hail about 2 inches deep.

  • 1.00″ quarter size Emergency Mngr
    Yoder, WY12:00 AM MDTGoshen County
  • 1.00″ quarter size Public
    10 S Midwest, WY3:00 PM MDTNatrona County

    Quarter sized hail reported from driver on Hwy 259.

  • 1.00″ quarter size Public
    12 S Midwest, WY3:12 PM MDTNatrona County

    Social media picture of quarter-sized hail.

  • 1.00″ quarter size Trained Spotter
    4 NNW Bar Nunn, WY4:06 PM MDTNatrona County

    Delayed report from earlier this afternoon.

  • 1.00″ quarter size NWS Employee
    11 NE Atlantic City, WY5:02 PM MDTFremont County

    2 inch deep dime to nickel sized hail, with a few larger hailstones to quarter sized.

  • 1.00″ quarter size Emergency Mngr
    Pine Haven, WY5:02 PM MDTCrook County
  • 0.75″ penny size Public
    4 W Lander, WY4:28 PM MDTFremont County

    Penny sized hail.

  • 0.75″ penny size Trained Spotter
    14 SE Evansville, WY5:05 PM MDTNatrona County

    Penny sized hail with 40 mph wind gusts.

These are verified ground reports, updated every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.

FAQ

Wyoming hail on September 10, 2023

NOAA radar put hail of an inch or more over 1 Wyoming city that day. The largest stones — 1.00 inches, quarter size — were over Casper. Every city hit is listed above with its own stone size.

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