Alert archive / Kansas / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 22, NWS Topeka, KS

April 6, 20104 counties in Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Apr 6, 2010, 3:47 PM CDT for 4 counties in Kansas. It was in force for 43 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
Apr 6, 2010, 3:47 PM CDT (20:47 UTC)
Expired
Apr 6, 2010, 4:30 PM CDT
In force
43 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Douglas County, KS, Franklin County, KS, Lyon County, KS, Osage County, KS

The radar

The Topeka radar (KTWX), 67 km from the middle of the area, began a volume at 20:49 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 6, 2:08 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 8.8 hours before the alert went out and 40 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 12:00Z on 2010-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1743 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 12:00Z on 2010-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 522 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
1743 J/kg
Mixed-layer CIN
-254 J/kg
Mixed-layer LCL
706 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
522 m²/s²
0-3 km storm-relative helicity
542 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 6, 3:11 PM CDT, 36 minutes earlier.

Area forecast discussion, Apr 6, 3:11 PM CDT, 36 minutes before
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Hazardous weather outlook, Apr 6, 2:29 PM CDT, 1 hour 18 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TOPEKA KS
229 PM CDT TUE APR 6 2010

KSZ008>012-020>024-026-034>040-054>056-058-059-071930-
REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY-
POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS-
WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON-
229 PM CDT TUE APR 6 2010

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SEVERE THUNDERSTORMS WILL DEVELOP ALONG A DRYLINE ACROSS EAST
CENTRAL KANSAS. THESE STORMS WILL BE CAPABLE OF LARGE DAMAGING
HAIL UP TO THE SIZE OF GOLF BALLS AS WELL AS WINDS OF 60 TO 70
MPH. AN ISOLATED TORNADO CAN NOT BE RULED OUT.

FIRE DANGER WILL REMAIN IN THE VERY HIGH TO EXTREME CATEGORY
ACROSS THE AREA THROUGH THE EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR
TO THE NATIONAL WEATHER SERVICE IN TOPEKA.

WOLTERS

In the hours before

Local storm report, Apr 6, 3:12 PM CDT, 35 minutes before
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Local storm report, Apr 6, 3:18 PM CDT, 29 minutes before
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Local storm report, Apr 6, 3:24 PM CDT, 23 minutes before
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Local storm report, Apr 6, 3:38 PM CDT, 9 minutes before
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Local storm report, Apr 6, 3:47 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 7:31 PM CDTSevere Thunderstorm WarningTOPClay, Marshall, Riley, Washington29 min
Apr 5, 7:43 PM CDTSevere Thunderstorm WarningTOPBrown, Nemaha18 min
Apr 5, 7:53 PM CDTSevere Thunderstorm WarningTOPMarshall37 min
Apr 5, 8:08 PM CDTSevere Thunderstorm WarningTOPWashington52 min
Apr 5, 8:26 PM CDTSevere Thunderstorm WarningTOPCloud, Republic, Washington34 min
Apr 5, 8:44 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington31 min
Apr 5, 8:58 PM CDTTornado WarningTOPWashington32 min
Apr 5, 9:13 PM CDTSevere Thunderstorm WarningTOPMarshall17 min
Apr 5, 9:18 PM CDTTornado WarningTOPMarshall, Washington27 min
Apr 5, 9:38 PM CDTSevere Thunderstorm WarningTOPMarshall11 min
Apr 6, 2:38 PM CDTSevere Thunderstorm WarningTOPLyon, Morris, Osage, Wabaunsee37 min
Apr 6, 3:04 PM CDTSevere Thunderstorm WarningTOPDouglas, Jefferson, Osage, Shawnee, Wabaunsee41 min
Apr 6, 3:14 PM CDTSevere Thunderstorm WarningTOPLyon, Morris, Osage, Wabaunsee46 min
Apr 6, 3:43 PM CDTSevere Thunderstorm WarningTOPDouglas, Jefferson, Osage, Shawnee, Wabaunsee47 min
Apr 6, 4:09 PM CDTAreal Flood AdvisoryTOPLyon111 min
Apr 6, 4:24 PM CDTAreal Flood AdvisoryTOPDouglas81 min
Apr 6, 4:28 PM CDTSevere Thunderstorm WarningTOPDouglas, Jefferson22 min
Apr 6, 4:52 PM CDTSevere Thunderstorm WarningTOPDouglas, Franklin, Lyon, Osage, Shawnee38 min
Apr 6, 5:29 PM CDTAreal Flood AdvisoryTOPLyon2 hr
Apr 6, 6:41 PM CDTSevere Thunderstorm WarningTOPCoffey, Lyon49 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2010Every severe thunderstorm 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.