Alert archive / Colorado / Flash Flood Warnings in 2007

Flash Flood Warning 7, NWS Denver/Boulder, CO

June 12, 2007Sedgwick County, Colorado

NWS Denver/Boulder, CO issued this flash flood warning at Jun 12, 2007, 2:41 PM MDT for Sedgwick County, Colorado. It was in force for 94 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 12, 2007, 2:41 PM MDT (20:41 UTC)
Expired
Jun 12, 2007, 4:15 PM MDT
In force
94 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

County Sedgwick County, CO

The radar

The Goodland radar (KGLD), 177 km from the middle of the area, began a volume at 20:43 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 (KDNR), launched 12:00Z, 8.7 hours before the alert went out and 134 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.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2007-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 77 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2007-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
77 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
2316 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KBOU 122044
FFWBOU
COC115-122215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
241 PM MDT TUE JUN 12 2007

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN SEDGWICK COUNTY IN NORTHEAST COLORADO

* UNTIL 415 PM MDT

* AT 241 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  AREAS OF LIGHT TO MODERATE RAIN CONTINUED OVER SEDGWICK COUNTY. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SIXTEEN-MILE CORNER AND JULESBURG.

DOPPLER RADAR ESTIMATES FROM 1 TO 3 INCHES OF RAIN HAS FALLEN THIS 
AFTERNOON EAST OF A JULESBURG TO SIXTEEN MILE CORNER.  

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. TURN AROUND...DO NOT DROWN.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING ALONG 
SAND CREEK AND POSSIBLY ALONG HIGHWAY 385 AS WELL AS COUNTRY ROADS 
AND NORMALLY DRY WASHES AND ARROYOS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM MDT TUESDAY EVENING
FOR NORTHEAST COLORADO.

LAT...LON 4076 10237 4076 10206 4100 10206 4099 10232

$$

RPK
1 follow-up statement
000 
WGUS75 KBOU 122135
FFSBOU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
331 PM MDT TUE JUN 12 2007

COC115-122215-
SEDGWICK CO-
331 PM MDT TUE JUN 12 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM MDT FOR
EASTERN SEDGWICK COUNTY...

AT 331 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
INDICATED LIGHT TO MODERATE RAIN CONTINUING OVER SEDGWICK COUNTY.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SIXTEEN-MILE CORNER AND JULESBURG.

DOPPLER RADAR ESTIMATES FROM 1 TO 3 INCHES OF RAIN FELL EARLIER 
THIS AFTERNOON FROM EAST OF JULESBURG TO SIXTEEN MILE CORNER.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS ESPECIALLY ALONG SAND CREEK AND HIGHWAY 
385...COUNTRY ROADS...NORMALLY DRY WASHES AND ARROYOS...AS WELL AS 
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

LAT...LON 4076 10237 4076 10206 4100 10206 4099 10232

$$

RPK

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 8:05 PM MDTSevere Thunderstorm WarningBOUPhillips25 min
Jun 11, 8:58 PM MDTFlash Flood WarningBOUSedgwick3 hr
Jun 11, 10:24 PM MDTSevere Thunderstorm WarningBOUPhillips19 min
Jun 12, 9:23 AM MDTFlash Flood WatchBOULogan, Phillips, Sedgwick16 hr
Jun 12, 11:15 AM MDTFlash Flood WarningBOUPhillips2 hr
Jun 12, 11:46 AM MDTFlash Flood WarningBOUSedgwick3 hr
Jun 12, 1:14 PM MDTFlash Flood WarningBOUPhillips3 hr
Jun 12, 4:14 PM MDTFlash Flood WarningBOUPhillips, Sedgwick6 hr
Jun 12, 4:36 PM MDTSevere Thunderstorm WarningBOUElbert39 min
Jun 12, 5:13 PM MDTSevere Thunderstorm WarningBOUElbert47 min

Nearby

Flash Flood Warnings in Colorado, 2007Every flash flood warning in 2007

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.