Interactive NWS Alert

Radar valid at 130 am MDT, Sep 11th 2025

COZ001-002-110730-
Lower Yampa River Basin CO-Central Yampa River Basin CO-
101 AM MDT Thu Sep 11 2025

...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN MOFFAT COUNTY
THROUGH 130 AM MDT...

At 101 AM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 39 miles southeast of Squaw Hollow Boat Ramp On
Flaming Gorge to 50 miles north of Rangely to 36 miles northeast of
Dinosaur. Movement was northeast at 45 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Sparks, Powder Wash, and Hiawatha.

This includes Colorado 318 between mile markers 30 and 43.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 4100 10816 4081 10809 4052 10851 4075 10865
4087 10901 4100 10893
TIME...MOT...LOC 0701Z 213DEG 40KT 4089 10890 4080 10860 4059 10850

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

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