Flash Flood Warning 9, NWS Denver/Boulder, CO

Issued

Jul 1, 2021, 12:56 AM MDT (06:56 UTC)

Expired

Jul 1, 2021, 4:00 AM MDT

In force

3 hr

Issued by

NWS Denver/Boulder, CO

Area

Storm-based polygon

Flood severity

None

County Weld County, CO

The Denver radar (KFTG), 79 km from the middle of the area, began a volume at 06:55 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.

424 
WGUS55 KBOU 010656
FFWBOU
COC123-011000-
/O.NEW.KBOU.FF.W.0009.210701T0656Z-210701T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Denver CO
1256 AM MDT Thu Jul 1 2021

The National Weather Service in Denver has issued a

* Flash Flood Warning for...
  Central Weld County in northeastern Colorado...

* Until 400 AM MDT.

* At 1256 AM MDT, Doppler radar indicated stationary thunderstorms 
  producing heavy rain 10 miles east of Barnesville. Between 2 and 3 
  inches of rain have fallen. Additional rainfall amounts of 1 to 2 
  inches are possible in the warned area. Flash flooding is ongoing 
  or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  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...
  mainly rural areas of Central Weld County along County Road 68 
  east of Barnesville.

This includes the following streams and drainages...
  Sanborn Draw.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

Excessive runoff from this storm will cause flash flooding of small 
creeks and streams, country roads, farmland along creeks, and other 
low lying areas.

&&

LAT...LON 4047 10433 4052 10427 4049 10419 4043 10417
      4039 10429

FLASH FLOOD...RADAR INDICATED

$$

Gimmestad

791 
WGUS75 KBOU 010910
FFSBOU

Flash Flood Statement
National Weather Service Denver CO
310 AM MDT Thu Jul 1 2021

COC123-011000-
/O.CON.KBOU.FF.W.0009.000000T0000Z-210701T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Weld CO-
310 AM MDT Thu Jul 1 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 4 AM MDT EARLY THIS 
MORNING FOR CENTRAL WELD COUNTY...

At 310 AM MDT, rain had ended across the warned area. Between 2 and 
4 inches of rain fell in the area 10 to 15 miles east of Barnesville.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

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...
  mainly rural areas of Central Weld County east of Barnesville 
  along County Road 68.

This includes the following streams and drainages...
  Sanborn Draw.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

Excessive runoff from this storm will cause flash flooding of small 
creeks and streams, country roads, farmland along creeks, and other 
low lying areas.

&&

LAT...LON 4047 10433 4052 10427 4049 10419 4043 10417
      4039 10429

FLASH FLOOD...RADAR INDICATED

$$

Gimmestad

Flash Flood Warnings in Colorado, 2021Every flash flood warning 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.