Alert archive / Kansas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 244, NWS Wichita, KS

July 8, 2009Allen County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Jul 8, 2009, 3:29 PM CDT for Allen County, Kansas. It was in force for 61 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
Jul 8, 2009, 3:29 PM CDT (20:29 UTC)
Expired
Jul 8, 2009, 4:30 PM CDT
In force
61 min
Issued by
NWS Wichita, KS
Area
Storm-based polygon

County Allen County, KS

The radar

The Pleasant Hill radar (KEAX), 137 km from the middle of the area, began a volume at 20:32 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

Lamont, OK (KLMN), launched 12:00Z, 8.5 hours before the alert went out and 239 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, Lamont, OK at 12:00Z on 2009-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1059 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, Lamont, OK at 12:00Z on 2009-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.193958Sfc1 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
1059 J/kg
Mixed-layer CIN
-234 J/kg
Mixed-layer LCL
1286 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.0

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 Wichita, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 8, 3:24 PM CDT, 5 minutes earlier.

Area forecast discussion, Jul 8, 3:24 PM CDT, 5 minutes before
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Hazardous weather outlook, Jul 8, 5:31 AM CDT, 9 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WICHITA KS
531 AM CDT WED JUL 8 2009

KSZ032-033-047>053-067>072-082-083-091>096-098>100-090945-
RUSSELL-LINCOLN-BARTON-ELLSWORTH-SALINE-RICE-MCPHERSON-MARION-CHASE-
RENO-HARVEY-BUTLER-GREENWOOD-WOODSON-ALLEN-KINGMAN-SEDGWICK-HARPER-
SUMNER-COWLEY-ELK-WILSON-NEOSHO-CHAUTAUQUA-MONTGOMERY-LABETTE-
531 AM CDT WED JUL 8 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL KANSAS...
SOUTH CENTRAL KANSAS AND SOUTHEAST KANSAS.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS MAY BECOME ISOLATED TO WIDELY SCATTERED ACROSS THE
AREA THIS MORNING. SEVERE WEATHER IS NOT EXPECTED. HOWEVER A FEW
STRONG STORMS WITH DIME SIZE HAIL WILL BE POSSIBLE...FOR AREAS
GENERALLY ALONG AND WEST OF A SALINA TO EL DORADO TO SEDAN LINE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS THURSDAY MORNING...FOR
AREAS MAINLY EAST OF THE TURNPIKE. A FEW STORMS COULD BE STRONG
PRODUCING DIME SIZE HAIL.

HEAT INDICES WILL CLIMB INTO THE 100 TO 105 DEGREE RANGE ACROSS
MOST OF THE AREA ON THURSDAY AND FRIDAY AFTERNOON...AND MAINLY
ACROSS SOUTH CENTRAL AND SOUTHEAST KANSAS ON SATURDAY AND SUNDAY
AFTERNOON. THIS HEAT MAY CONTINUE ACROSS MUCH OF THE AREA INTO
EARLY NEXT WEEK.

BESIDES THE HEAT...THERE WILL ALSO BE A CHANCE FOR THUNDERSTORMS
OVER THE WEEKEND...MAINLY ACROSS CENTRAL KANSAS. CHANCES FOR
THUNDERSTORMS WILL CONTINUE INTO EARLY NEXT WEEK...MAINLY ACROSS
SOUTHEAST KANSAS. ISOLATED STRONG TO SEVERE STORMS WILL BE
POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.

&&

FOR A GRAPHICAL VERSION OF THIS INFORMATION...SEE OUR
WEBPAGE AT (LOWERCASE) HTTP://WEATHER.GOV/WICHITA/HWO/HWO.PHP

KED/BILLINGS

In the hours before

Special weather statement, Jul 8, 3:16 PM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA KS
316 PM CDT WED JUL 8 2009

KSZ072-082045-
ALLEN-
316 PM CDT WED JUL 8 2009

...THE NATIONAL WEATHER SERVICE IN WICHITA HAS ISSUED A SIGNIFICANT
WEATHER ALERT FOR ALLEN COUNTY...

AT 315 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM NEAR GARNETT...OR 23 MILES SOUTH OF OTTAWA...
AND MOVING SOUTH AT 35 MPH.

QUARTER SIZE HAIL...AND DAMAGING WINDS OF 60 TO 75 MPH ARE EXPECTED
WITH THIS STORM.

PEOPLE IN EASTERN ALLEN COUNTY...SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. A WARNING MAY BE NEEDED IF THE STORMS MOVE INTO THE AREA. BE
READY TO SEEK SHELTER IF SEVERE WEATHER THREATENS.

CARUSO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 6:11 AM CDTSevere Thunderstorm WarningICTButler, Harvey, Marion64 min
Jul 8, 6:52 AM CDTSevere Thunderstorm WarningICTMcPherson, Marion27 min
Jul 8, 7:13 AM CDTSevere Thunderstorm WarningICTButler17 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2009Every severe thunderstorm warning in 2009

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.