Alert archive / Colorado / Flash Flood Warnings in 2014
Flash Flood Warning 3, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at May 23, 2014, 7:21 PM MDT for Larimer County, Colorado. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 23, 2014, 7:21 PM MDT (01:21 UTC)
- Expired
- May 23, 2014, 10:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Flood severity
- None
County Larimer County, CO
The radar
The Denver radar (KFTG), 84 km from the middle of the area, began a volume at 01:24 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 23, 8:41 PM MDT | FLASH FLOOD | 2 W Loveland, CO | 1 TO 2 FEET OF FLOWING WATER OVER MAJOR INTERSECTIONS OF WEST LOVELAND. TRAINED OBSERVER MEASURED 4.15 INCHES OF RAINFALL IN VICINITY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 1.4 hours before the alert went out and 171 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 530 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1524 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -72 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
655 WGUS55 KBOU 240121 FFWBOU COC069-240415- /O.NEW.KBOU.FF.W.0003.140524T0121Z-140524T0415Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 721 PM MDT FRI MAY 23 2014 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN LARIMER COUNTY IN NORTH CENTRAL COLORADO... * UNTIL 1015 PM MDT * AT 717 PM MDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED VERY HEAVY RAIN FALLING OVER SOUTHEAST LARIMER COUNTY JUST TO THE WEST AND NORTHWEST LOVELAND. 2.5 TO 3.5 INCHES OF RAIN HAS FALLEN IN THE PAST HOUR. FLASH FLOODING HAS BEEN REPORTED IN THE AREA. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... WESTERN AND NORTHERN LOVELAND. ADDITIONAL RAINFALL AMOUNTS OF ONE HALF TO THREE QUARTER INCH ARE POSSIBLE IN THE WARNED AREA. THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...BUCKHORN CREEK... COTTONWOOD CREEK...BIG THOMPSON RIVER AND DRY CREEK. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY... COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 4035 10511 4036 10517 4048 10516 4048 10505 $$ BAKER
1 follow-up statement
487 WGUS75 KBOU 240413 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1013 PM MDT FRI MAY 23 2014 COC069-240418- /O.EXP.KBOU.FF.W.0003.000000T0000Z-140524T0415Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LARIMER CO- 1013 PM MDT FRI MAY 23 2014 ...THE FLASH FLOOD WARNING FOR SOUTHEASTERN LARIMER COUNTY WILL EXPIRE AT 1015 PM MDT... THE HEAVY RAIN HAS DIMINISHED...SO FLASH FLOODING IS NO LONGER A THREAT. HOWEVER...THIS FLASH FLOOD WARNING HAS BEEN REPLACED BY AN AREAL FLOOD WARNING FOR SOUTHEASTERN LARIMER COUNTY. LAT...LON 4035 10511 4036 10517 4048 10516 4048 10505 $$ ENTREKIN
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 6:05 PM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe, Denver | 115 min |
| May 23, 7:20 PM MDT | Flash Flood Warning | BOU | Boulder | 3 hr |
| May 23, 8:10 PM MDT | Flash Flood Warning | BOU | Larimer, Weld | 3 hr |
| May 23, 9:20 PM MDT | Areal Flood Advisory | BOU | Weld | 4 hr |
| May 23, 10:06 PM MDT | Areal Flood Warning | BOU | Larimer | 4 hr |
| May 23, 10:10 PM MDT | Flash Flood Warning | BOU | Weld | 3 hr |
| May 23, 10:26 PM MDT | Areal Flood Advisory | BOU | Adams, Denver, Weld | 3 hr |
| May 23, 11:09 PM MDT | Areal Flood Advisory | BOU | Larimer | 96 min |
| May 24, 5:50 AM MDT | Flash Flood Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more | 17 hr |
| May 24, 4:42 PM MDT | Special Weather Statement | BOU | Grand | 33 min |
| May 24, 5:11 PM MDT | Special Weather Statement | BOU | Jackson | 34 min |
| May 24, 5:37 PM MDT | Special Weather Statement | BOU | Jefferson | 23 min |
| May 24, 5:58 PM MDT | Special Weather Statement | BOU | Douglas | 47 min |
Nearby
Flash Flood Warnings in Colorado, 2014Every flash flood warning in 2014
Sources
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.