Headline:
Flash Flood Warning issued September 18 at 4:13PM MDT until September 18 at 7:15PM MDT by NWS Grand Junction CO
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
September 18, 2026 - 3:13pm
Expires:
September 18, 2026 - 6:15pm
Description:
FFWGJT
The National Weather Service in Grand Junction has issued a
* Flash Flood Warning for...
Northwestern Mesa County in west central Colorado...
* Until 715 PM MDT.
* At 413 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.4 and 0.8 inches of
rain have fallen. The expected rainfall rate is 1.5 to 3 inches in
1 hour. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Loma and Mack. This includes portions of I-70 between mile markers
8 and 15.
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Remain alert for flooding even in locations not receiving rain.
Arroyos, streams, and rivers can become raging currents in a matter
of minutes, even from distant rainfall.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become life
threatening in heavy rains. Campers and hikers should avoid streams
or creeks.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Area Description:
Mesa, CO
Forcast Office:
NWS Grand Junction CO
Sender:
w-nws.webmaster@noaa.gov