Alert archive / Colorado / Flash Flood Warnings in 2016
Flash Flood Warning 2, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jul 17, 2016, 7:45 PM MDT for Logan County, Weld County, Colorado. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 17, 2016, 7:45 PM MDT (01:45 UTC)
- Expired
- Jul 17, 2016, 9:45 PM MDT
- In force
- 2 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Logan County, CO, Weld County, CO
The radar
The Cheyenne radar (KCYS), 114 km from the middle of the area, began a volume at 01:47 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.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 1.8 hours before the alert went out and 94 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
- 697 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 2716 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted.
894 WGUS55 KBOU 180145 FFWBOU COC075-123-180345- /O.NEW.KBOU.FF.W.0002.160718T0145Z-160718T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 745 PM MDT SUN JUL 17 2016 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL WELD COUNTY IN NORTHEASTERN COLORADO... WEST CENTRAL LOGAN COUNTY IN NORTHEASTERN COLORADO... * UNTIL 945 PM MDT * AT 745 PM MDT...THE PUBLIC REPORTED FLASH FLOODING 10 MILES NORTHEAST OF NEW RAYMWER. UP TO TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING WILL CONTINUE. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... STONEHAM...WILLARD AND PAWNEE PASS. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING SPOTS. && LAT...LON 4055 10376 4083 10377 4082 10338 4054 10342 $$ RPK
2 follow-up statements
626 WGUS75 KBOU 180225 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 825 PM MDT SUN JUL 17 2016 COC075-123-180345- /O.CON.KBOU.FF.W.0002.000000T0000Z-160718T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WELD CO-LOGAN CO- 825 PM MDT SUN JUL 17 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM MDT FOR EAST CENTRAL WELD AND WEST CENTRAL LOGAN COUNTIES... AT 824 PM MDT...THE PUBLIC REPORTED FLASH FLOODING OCCURRING 10 MILES NORTHEAST OF NEW RAYMER. TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS ALREADY OCCURRING. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... STONEHAM...WILLARD AND PAWNEE PASS. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING SPOTS. && LAT...LON 4055 10376 4083 10377 4082 10338 4054 10342 $$ RPK
053 WGUS75 KBOU 180337 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 937 PM MDT SUN JUL 17 2016 COC075-123-180347- /O.EXP.KBOU.FF.W.0002.000000T0000Z-160718T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WELD CO-LOGAN CO- 937 PM MDT SUN JUL 17 2016 ...THE FLASH FLOOD WARNING FOR EAST CENTRAL WELD AND WEST CENTRAL LOGAN COUNTIES WILL EXPIRE AT 945 PM MDT... THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. LAT...LON 4055 10376 4083 10377 4082 10338 4054 10342 $$ MEIER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 6:11 PM MDT | Tornado Warning | BOU | Logan, Weld | 34 min |
| Jul 17, 6:42 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Weld | 48 min |
| Jul 17, 7:18 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 42 min |
| Jul 17, 7:20 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 40 min |
| Jul 17, 7:27 PM MDT | Areal Flood Advisory | BOU | Logan, Morgan | 2 hr |
| Jul 17, 7:49 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 56 min |
| Jul 17, 8:07 PM MDT | Special Weather Statement | BOU | Logan | 38 min |
| Jul 17, 8:19 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 26 min |
| Jul 17, 8:44 PM MDT | Areal Flood Advisory | BOU | Washington | 2 hr |
| Jul 17, 9:14 PM MDT | Special Weather Statement | BOU | Adams | 46 min |
| Jul 17, 9:25 PM MDT | Severe Thunderstorm Warning | BOU | Adams | 50 min |
| Jul 17, 9:49 PM MDT | Flash Flood Warning | BOU | Adams | 3 hr |
| Jul 17, 10:04 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 41 min |
| Jul 17, 10:44 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 24 min |
| Jul 17, 10:49 PM MDT | Areal Flood Advisory | BOU | Weld | 3 hr |
| Jul 17, 11:10 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 29 min |
| Jul 18, 1:18 PM MDT | Special Weather Statement | BOU | Douglas | 42 min |
| Jul 18, 3:33 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 42 min |
| Jul 18, 4:16 PM MDT | Special Weather Statement | BOU | Weld | 44 min |
| Jul 18, 4:48 PM MDT | Special Weather Statement | BOU | Weld | 42 min |
| Jul 18, 4:51 PM MDT | Special Weather Statement | BOU | Weld | 39 min |
| Jul 18, 5:02 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 43 min |
| Jul 18, 5:19 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 41 min |
| Jul 18, 5:22 PM MDT | Areal Flood Advisory | BOU | Weld | 3 hr |
| Jul 18, 5:33 PM MDT | Areal Flood Advisory | BOU | Douglas | 117 min |
| Jul 18, 5:38 PM MDT | Areal Flood Advisory | BOU | Weld | 3 hr |
| Jul 18, 5:49 PM MDT | Areal Flood Advisory | BOU | Boulder | 56 min |
Nearby
Flash Flood Warnings in Colorado, 2016Every flash flood warning in 2016
Sources
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.