Alert archive / Kansas / Flash Flood Warnings in 2010

Flash Flood Warning 44, NWS Topeka, KS

September 15, 20104 counties in Kansas

NWS Topeka, KS issued this flash flood warning at Sep 15, 2010, 7:31 PM CDT for 4 counties in Kansas. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 15, 2010, 7:31 PM CDT (00:31 UTC)
Expired
Sep 15, 2010, 11:30 PM CDT
In force
4 hr
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Flood severity
None

Counties Anderson County, KS, Coffey County, KS, Franklin County, KS, Osage County, KS

The radar

The Topeka radar (KTWX), 90 km from the middle of the area, began a volume at 00:34 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

Topeka, KS (KTOP), launched 00:00Z, 0.5 hours before the alert went out and 66 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, Topeka, KS at 00:00Z on 2010-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 550 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, Topeka, KS at 00:00Z on 2010-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 218 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
550 J/kg
Mixed-layer CIN
-299 J/kg
Mixed-layer LCL
735 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
218 m²/s²
0-3 km storm-relative helicity
215 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Topeka, KS wrote its last area forecast discussion before this flash flood warning went out at Sep 15, 6:09 PM CDT, 1 hour 22 minutes earlier.

Area forecast discussion, Sep 15, 6:09 PM CDT, 1 hour 22 minutes before
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Hazardous weather outlook, Sep 15, 3:41 PM CDT, 3 hours 50 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TOPEKA KS
341 PM CDT WED SEP 15 2010

KSZ008>012-020>024-026-034>040-054>056-058-059-162045-
REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY-
POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS-
WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON-
341 PM CDT WED SEP 15 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
KANSAS...NORTH CENTRAL KANSAS AND NORTHEAST KANSAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORM WILL INCREASE IN COVERAGE AND INTENSITY ALONG AND
AHEAD OF A COLD FRONT THROUGH THE EVENING HOURS. THESE STORMS
WILL BE CAPABLE OF PRODUCING HAIL UP TO GOLFBALL SIZE...DAMAGING
WINDS UP TO 60 MPH...AND WILL POSE A LOW END THREAT FOR ISOLATED
TORNADOES. THE GREATEST THREAT OF SEVERE WEATHER WILL BE ALONG
AND SOUTH OF INTERSTATE 70...WHILE THE TORNADO THREAT WILL BE
LIMITED TO AREAS SOUTH OF A COUNCIL GROVE TO OTTAWA LINE.

HEAVY RAINFALL OF ONE TO TWO INCHES PER HOUR AND FLASH FLOODING
WILL ALSO BE POSSIBLE...ESPECIALLY OVER PARTS OF EAST CENTRAL
AND NORTHEAST KANSAS THAT HAVE RECEIVED HEAVY RAINFALL ALREADY
TODAY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THERE WILL BE A SLIGHT CHANCE FOR THUNDERSTORMS ACROSS NORTHERN
KANSAS FRIDAY NIGHT THROUGH SATURDAY.

THUNDERSTORMS WILL BE POSSIBLE ONCE AGAIN TUESDAY NIGHT AND
WEDNESDAY OF NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH THIS EVENING.

In the hours before

Local storm report, Sep 15, 6:28 PM CDT, 1 hour 3 minutes before
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Special weather statement, Sep 15, 6:28 PM CDT, 1 hour 3 minutes before
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Local storm report, Sep 15, 6:38 PM CDT, 53 minutes before
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Local storm report, Sep 15, 6:40 PM CDT, 51 minutes before
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Local storm report, Sep 15, 6:46 PM CDT, 45 minutes before
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Special weather statement, Sep 15, 6:59 PM CDT, 32 minutes before
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Nearby

Flash Flood Warnings in Kansas, 2010Every flash flood warning in 2010

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.