Alert archive / Kansas / Flash Flood Watches in 2006

Flash Flood Watch 4, NWS Goodland, KS

August 18, 20066 counties in Kansas; Cheyenne County, Colorado

NWS Goodland, KS issued this flash flood watch at Aug 18, 2006, 4:06 AM CDT for 6 counties in Kansas; Cheyenne County, Colorado. It took effect at Aug 18, 2006, 1:00 PM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Aug 18, 2006, 4:06 AM CDT (09:06 UTC)
In effect from
Aug 18, 2006, 1:00 PM CDT
Expired
Aug 19, 2006, 1:00 AM CDT
In force
12 hr
Issued by
NWS Goodland, KS
Flood severity
None

Counties Cheyenne County, CO, Gove County, KS, Graham County, KS, Greeley County, KS, Logan County, KS, Wallace County, KS, Wichita County, KS

The radar

The Goodland radar (KGLD), 68 km from the middle of the area, began a volume at 09:06 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

Dodge City, (KDDC), launched 00:00Z, 9.1 hours before the alert went out and 170 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, Dodge City, at 00:00Z on 2006-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1230 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 00:00Z on 2006-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -11 square meters per square second.1939Sfc1 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
1230 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
1901 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Goodland, KS wrote its last area forecast discussion before this flash flood watch went out at Aug 18, 3:23 AM CDT, 43 minutes earlier.

Area forecast discussion, Aug 18, 3:23 AM CDT, 43 minutes before
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Hazardous weather outlook, Aug 17, 11:22 AM CDT, 16 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GOODLAND KS
1022 AM MDT THU AUG 17 2006

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-181200-
YUMA-KIT CARSON-CHEYENNE CO-CHEYENNE KS-RAWLINS-DECATUR-NORTON-
SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-GREELEY-WICHITA-
DUNDY-HITCHCOCK-RED WILLOW-
1122 AM CDT THU AUG 17 2006 /1022 AM MDT THU AUG 17 2006/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST
NEBRASKA...NORTHWEST KANSAS AND EAST CENTRAL COLORADO.

.DAY ONE...TODAY AND TONIGHT

ISOLATED THUNDERSTORMS WILL BE POSSIBLE LATE THIS AFTERNOON AND
EARLY EVENING IN EASTERN COLORADO. DUE TO LIMITED INSTABILITY AND
WIND SHEAR...STORMS ARE NOT EXPECTED TO BECOME SEVERE. ALL
THUNDERSTORMS PRODUCE DEADLY CLOUD TO GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A COLD FRONT WILL MOVE THROUGH THE REGION FROM LATE FRIDAY
AFTERNOON INTO EARLY SATURDAY. AN UPPER LEVEL DISTURBANCE WILL
ALSO MOVE THROUGH AT THE SAME TIME. A MOIST AND UNSTABLE AIR MASS
WILL BE IN PLACE AHEAD OF THESE FEATURES. AS A RESULT SCATTERED
THUNDERSTORMS WILL DEVELOP ACROSS THE AREA DURING THIS TIME. AT THIS
TIME...THESE STORMS ARE NOT EXPECTED TO BECOME SEVERE. HOWEVER...THE
POTENTIAL WILL EXIST FOR THESE STORMS TO PRODUCE LOCALLY HEAVY
RAINFALL. THIS COULD CAUSE FLOODING PROBLEMS IN LOCATIONS THAT
RECEIVED HEAVY RAINFALL ON WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

BULLER/JDK

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 17, 7:30 PM CDTSevere Thunderstorm WarningGLDWichita35 min
Aug 17, 8:07 PM CDTFlash Flood WarningGLDWichita113 min
Aug 17, 8:50 PM CDTSevere Thunderstorm WarningGLDGreeley, Wichita40 min
Aug 17, 9:04 PM CDTFlash Flood WarningGLDGreeley116 min
Aug 18, 4:57 PM CDTSevere Thunderstorm WarningGLDWallace24 min
Aug 18, 5:07 PM CDTSevere Thunderstorm WarningGLDDecatur, Rawlins38 min
Aug 18, 5:46 PM CDTSevere Thunderstorm WarningGLDNorton34 min
Aug 18, 6:19 PM CDTFlash Flood WarningGLDGraham, Norton3 hr
Aug 18, 6:43 PM CDTSevere Thunderstorm WarningGLDSheridan26 min
Aug 17, 7:28 PM CDTSevere Thunderstorm WarningGLDCheyenne51 min
Aug 17, 7:52 PM CDTFlash Flood WarningGLDCheyenne113 min
Aug 18, 6:56 PM CDTSevere Thunderstorm WarningGLDCheyenne28 min
Aug 18, 5:49 PM CDTSevere Thunderstorm WarningGLDRed Willow41 min

Nearby

Flash Flood Watches in Kansas, 2006Flash Flood Watches in Colorado, 2006Every flash flood watch in 2006

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.