Flash Flood Warning 4, NWS Denver/Boulder, CO

Issued

Jun 19, 2018, 1:11 AM MDT (07:11 UTC)

Expired

Jun 19, 2018, 6:06 AM MDT

In force

5 hr

Issued by

NWS Denver/Boulder, CO

Area

Storm-based polygon

Flood severity

None

Counties Morgan County, CO, Weld County, CO

The Denver radar (KFTG), 69 km from the middle of the area, began a volume at 07:13 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

511 
WGUS55 KBOU 190711
FFWBOU
COC087-123-191215-
/O.NEW.KBOU.FF.W.0004.180619T0711Z-180619T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Denver CO
111 AM MDT TUE JUN 19 2018

The National Weather Service in Denver Colorado has issued a

* Flash Flood Warning for...
  Southeastern Weld County in northeastern Colorado...
  Northwestern Morgan County in northeastern Colorado...

* Until 615 AM MDT.

* At 110 AM MDT, National Weather Service Doppler radar indicated 
  very heavy rain from thunderstorms along a line extending from 4 
  miles northwest of Hudson to 3 miles west of Stoneham. The line of 
  storms are nearly stationary, while individual storms are moving 
  northeast at 20 mph, training over the same areas. Radar estimates 
  between 3 and 6 inches of rain has already fallen in the warning 
  area. Law enforcement has also reported flooding and washed out 
  roads.  

* Some locations that will experience flooding include...
  Hudson, Keenesburg, New Raymer, Antelope Springs, Weldona, Jackson 
  Reservoir, Orchard, Stoneham, Riverside Reservoir, Milton 
  Reservoir, Goodrich and Roggen.

This includes the following streams and drainages...Wild Horse
Creek...Wildcat Creek...East Lost Creek...Lost Creek...Kiowa Creek...
North Pawnee Creek...Sand Creek...Box Elder Creek...East Prong
Wildcat Creek...Bijou Creek...South Platte River...Sanborn Draw...
Pawnee Creek and South Pawnee Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 4071 10366 4040 10365 4029 10391 4025 10412
      4010 10441 4005 10474 4009 10477 4015 10474
      4035 10454 4046 10420 4058 10397

$$

BARJENBRUCH

393 
WGUS75 KBOU 190938
FFSBOU

Flash Flood Statement
National Weather Service Denver CO
338 AM MDT TUE JUN 19 2018

COC087-123-191215-
/O.CON.KBOU.FF.W.0004.000000T0000Z-180619T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Weld CO-Morgan CO-
338 AM MDT TUE JUN 19 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM MDT FOR
SOUTHEASTERN WELD AND NORTHWESTERN MORGAN COUNTIES...

At 331 AM MDT, Doppler radar indicated that thunderstorms with heavy 
rain had moved out of the Warning area. Radar estimates indicate 
between 2 and 4 inches of rain fell over a relatively large area 
from near Hudson, Keenesburg, and Roggen along the I-76 Corridor 
northeastward through the Riverside Reservoir area and then toward 
New Raymer, with up to around 6 inches in a narrow band between 
Keenesburg, Riverside Reservoir, and Jackson Reservoir. Weld County 
Emergency Management earlier tonight reported some roads were washed 
out or under water.  

Some locations that will experience flooding include...
Hudson, Keenesburg, New Raymer, Antelope Springs, Weldona, Jackson 
Reservoir, Orchard, Stoneham, Riverside Reservoir, Milton Reservoir, 
Goodrich and Roggen.

This includes the following streams and drainages...Wild Horse
Creek...Wildcat Creek...East Lost Creek...Lost Creek...Kiowa Creek...
North Pawnee Creek...Sand Creek...Box Elder Creek...East Prong 
Wildcat Creek...Bijou Creek...Sanborn Draw...Pawnee Creek and South 
Pawnee Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 4071 10366 4040 10365 4029 10391 4025 10412
      4010 10441 4005 10474 4009 10477 4015 10474
      4035 10454 4046 10420 4058 10397

$$

BARJENBRUCH

370 
WGUS75 KBOU 191206
FFSBOU

Flash Flood Statement
National Weather Service Denver CO
606 AM MDT TUE JUN 19 2018

COC087-123-191213-
/O.CAN.KBOU.FF.W.0004.000000T0000Z-180619T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Weld CO-Morgan CO-
606 AM MDT TUE JUN 19 2018

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN WELD AND NORTHWESTERN
MORGAN COUNTIES IS CANCELLED...

Heavy rain has ended. Flooding of low lying or poor drainage areas 
may still be occurring, but is no longer expected to pose a life 
threatening risk.  Please continue to heed any remaining road 
closures.

LAT...LON 4071 10366 4040 10365 4029 10391 4025 10412
      4010 10441 4005 10474 4009 10477 4015 10474
      4035 10454 4046 10420 4058 10397

$$

BARJENBRUCH

Flash Flood Warnings in Colorado, 2018Every flash flood warning in 2018

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.