Alert archive / Kansas / Flash Flood Warnings in 1991

Flash Flood Warning 1, NWS Topeka, KS

April 12, 1991Washington County, Kansas

NWS Topeka, KS issued this flash flood warning at Apr 12, 1991, 10:20 PM CDT for Washington County, Kansas. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Apr 12, 1991, 10:20 PM CDT (03:20 UTC)
Expired: Apr 13, 1991, 4:15 AM CDT
In force: 6 hr
Issued by: NWS Topeka, KS
Area: Whole counties

County Washington County, KS

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 3.3 hours before the alert went out and 152 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 392 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 1502 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Apr 12, 7:26 PM CDT, 2 hours 54 minutes before

KSZ013>016-130115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
725 PM CDT FRI APR 12 1991

...THERE ARE NO SEVERE THUNDERSTORMS IN NORTHEAST KANSAS AT 725 PM...

AT 725 PM CDT...THERE WERE NO SHOWERS OR THUNDERSTORMS IN NORTHEAST
OR EAST CENTRAL KANSAS. HOWEVER...STRONG TO SEVER THUNDERSTORMS WERE
CONTINUING OVER CENTRAL KANSAS WITH THE CLOSEST THUNDERSTORMS TO
NORTHEAST KANSAS JUST TO THE WEST OF CLAY CENTER AT 720 PM THIS
EVENING. OTHER THUNDERSTORMS EXTENDED SOUTH SOUTHWEST TO NEAR SALINA
AND INTO SOUTH CENTRAL KANSAS WEST OF WICHITA.

ALL THE THUNDERSTORMS WERE MOVING TO THE NORTH NORTHEAST AT AROUND
30 MILES AN HOUR. THE STORMS NEAR CLAY CENTER WOULD MAKE IT TO NEAR
BLUE RAPIDS AND MARYSVILLE BY 830 PM IF THEY HOLD TOGETHER AND CONTINUE
CURRENT MOVEMENT.

PB

Special weather statement, Apr 12, 8:20 PM CDT, 2 hours before

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Special weather statement, Apr 12, 8:21 PM CDT, 1 hour 59 minutes before

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Special weather statement, Apr 12, 9:55 PM CDT, 25 minutes before

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Special weather statement, Apr 12, 9:57 PM CDT, 23 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 7:16 PM CDT	Severe Thunderstorm Warning	TOP	Mitchell	44 min
Apr 12, 7:30 PM CDT	Tornado Warning	TOP	Clay	30 min
Apr 12, 7:48 PM CDT	Tornado Warning	TOP	Washington	42 min
Apr 12, 8:30 PM CDT	Severe Thunderstorm Warning	TOP	Washington	40 min
Apr 12, 9:36 PM CDT	Severe Thunderstorm Warning	TOP	Marshall	54 min
Apr 12, 9:56 PM CDT	Severe Thunderstorm Warning	TOP	McPherson	49 min
Apr 12, 10:17 PM CDT	Severe Thunderstorm Warning	TOP	Riley	58 min
Apr 12, 10:41 PM CDT	Severe Thunderstorm Warning	TOP	McPherson	49 min
Apr 12, 11:04 PM CDT	Severe Thunderstorm Warning	TOP	Dickinson	41 min
Apr 13, 12:34 AM CDT	Severe Thunderstorm Warning	TOP	Jackson, Pottawatomie, Shawnee, Wabaunsee	41 min

Nearby

Flash Flood Warnings in Kansas, 1991 Every flash flood warning in 1991

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.