|
Home Return to list Flash Flood Warning 0001 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-05-21 19:52:11
002
WGUS55 KBOU 220051
FFWBOU
COC121-220345-
/O.NEW.KBOU.FF.W.0001.260522T0051Z-260522T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Denver CO
651 PM MDT Thu May 21 2026
The National Weather Service in Denver has issued a
* Flash Flood Warning for...
Southeastern Washington County in northeastern Colorado...
* Until 945 PM MDT.
* At 651 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Additional rainfall amounts of 0.5 to 1 inch are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, gulches,
roads, and poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Cope.
This includes the following streams and drainages...
Arikaree River, North Fork Arikaree River and Gordon Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. Act quickly to protect your life.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3971 10315 3974 10280 3957 10280 3957 10315
3971 10317
FLASH FLOOD...RADAR INDICATED
$$
63
Action: Continued Issued At: 2026-05-21 20:54:44
516
WGUS75 KBOU 220154
FFSBOU
Flash Flood Statement
National Weather Service Denver CO
754 PM MDT Thu May 21 2026
COC121-220345-
/O.CON.KBOU.FF.W.0001.000000T0000Z-260522T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington CO-
754 PM MDT Thu May 21 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM MDT THIS
EVENING FOR SOUTHEASTERN WASHINGTON COUNTY...
At 754 PM MDT, Doppler radar indicated thunderstorms had ended over
southeastern Washington county. Between 2.5 and 4 inches of rain
have fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, gulches, roads,
and poor drainage and low-lying areas.
Some locations that will experience flash flooding include...
Cope.
This includes the following streams and drainages...
Arikaree River, North Fork Arikaree River and Gordon Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. Act quickly to protect your life.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3971 10315 3974 10280 3957 10280 3957 10315
3971 10317
FLASH FLOOD...RADAR INDICATED
$$
63
Action: Time Extended Issued At: 2026-05-21 22:29:19
817
WGUS55 KBOU 220328
FFWBOU
COC121-220645-
/O.EXT.KBOU.FF.W.0001.000000T0000Z-260522T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Denver CO
928 PM MDT Thu May 21 2026
The National Weather Service in Denver has extended the
* Flash Flood Warning for...
Southeastern Washington County in northeastern Colorado...
* Until 1245 AM MDT.
* At 928 PM MDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
2.5 and 4.5 inches of rain have fallen. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and an automated gauge that has reported over 4
inches of rain.
IMPACT...Flash flooding of small creeks and streams, gulches,
roads, and poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Cope.
This includes the following streams and drainages...
Gordon Creek, North Fork Arikaree River and Arikaree River.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. Act quickly to protect your life.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3971 10315 3974 10280 3957 10280 3957 10315
3971 10317
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
22
Action: Continued Issued At: 2026-05-22 00:09:50
969
WGUS75 KBOU 220508
FFSBOU
Flash Flood Statement
National Weather Service Denver CO
1108 PM MDT Thu May 21 2026
COC121-220645-
/O.CON.KBOU.FF.W.0001.000000T0000Z-260522T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington CO-
1108 PM MDT Thu May 21 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM MDT FRIDAY FOR
SOUTHEASTERN WASHINGTON COUNTY...
At 1108 PM MDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
2.5 and 5 inches of rain have fallen. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, gulches, roads,
and poor drainage and low-lying areas.
Some locations that will experience flash flooding include...
Cope.
This includes the following streams and drainages...
Gordon Creek, Arikaree River and North Fork Arikaree River.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. Act quickly to protect your life.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3971 10315 3974 10280 3957 10280 3957 10315
3971 10317
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Meier
Action: Continued Issued At: 2026-05-22 00:10:20
973
WGUS75 KBOU 220509
FFSBOU
Flash Flood Statement
National Weather Service Denver CO
1109 PM MDT Thu May 21 2026
COC121-220645-
/O.CON.KBOU.FF.W.0001.000000T0000Z-260522T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington CO-
1109 PM MDT Thu May 21 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM MDT FRIDAY FOR
SOUTHEASTERN WASHINGTON COUNTY...
At 1109 PM MDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
2.5 and 5 inches of rain have fallen. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, gulches, roads,
and poor drainage and low-lying areas.
Some locations that will experience flash flooding include...
Cope.
This includes the following streams and drainages...
Gordon Creek, Arikaree River and North Fork Arikaree River.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. Act quickly to protect your life.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3971 10315 3974 10280 3957 10280 3957 10315
3971 10317
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Meier
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||