Alert archive / Kansas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 246, NWS Topeka, KS

September 8, 2008Douglas County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Sep 8, 2008, 4:38 AM CDT for Douglas County, Kansas. It was in force for 22 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
Sep 8, 2008, 4:38 AM CDT (09:38 UTC)
Expired
Sep 8, 2008, 5:00 AM CDT
In force
22 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon

County Douglas County, KS

The radar

The Topeka radar (KTWX), 82 km from the middle of the area, began a volume at 09:39 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, 9.6 hours before the alert went out and 33 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 2008-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2008-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
222 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 Sep 7, 11:43 PM CDT, 4 hours 55 minutes earlier.

Area forecast discussion, Sep 7, 11:43 PM CDT, 4 hours 55 minutes before
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Hazardous weather outlook, Sep 7, 8:49 PM CDT, 7 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TOPEKA KS
849 PM CDT SUN SEP 7 2008

KSZ008>012-020>024-026-034>040-054>056-058-059-081500-
REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY-
POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS-
WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON-
849 PM CDT SUN SEP 7 2008

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

.DAY ONE...TONIGHT

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS TONIGHT. THE MAIN
THREAT AREA IS NORTH AND WEST OF A LINE FROM COUNCIL GROVE TO
HIAWATHA. THE MOST LIKELY TIME FOR ISOLATED SEVERE WEATHER WILL BE
AFTER MIDNIGHT THROUGH 5 AM. THE MAIN THREAT FROM THUNDERSTORMS
WOULD BE LARGE HAIL.

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP TONIGHT ACROSS
NORTH CENTRAL KANSAS AND SPREAD NORTH AND EAST ACROSS THE OUTLOOK
AREA. DUE TO FAVORABLE SHEAR AND INSTABILITY ACROSS NORTH CENTRAL
KANSAS...AND ISOLATED SEVERE STORM IS POSSIBLE. LARGE HAIL UP TO
THE SIZE OF QUARTERS WOULD BE THE MAIN THREAT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A COLD FRONT WILL PUSH ACROSS THE REGION DURING THE DAY MONDAY.
THUNDERSTORMS ARE POSSIBLE ACROSS THE ENTIRE OUTLOOK AREA. SOME OF
THE STORMS MAY BE SEVERE DURING THE AFTERNOON HOURS ACROSS EAST
CENTRAL KANSAS WHERE BETTER INSTABILITY WILL BE AVAILABLE.

ANOTHER COLD FRONT WILL APPROACH THE AREA BEGINNING LATE TUESDAY
NIGHT. THERE IS A CHANCE FOR THUNDERSTORMS WEDNESDAY AND THURSDAY
ACROSS THE ENTIRE OUTLOOK AREA AS THE FRONT PUSHES THROUGH. THE
FRONT WILL THEN LIFT BACK NORTHWARD TOWARD THE END OF THE WORK
WEEK...AND BRING ANOTHER CHANCE FOR THUNDERSTORMS FRIDAY NIGHT AND
SATURDAY MAINLY ACROSS PORTIONS OF EAST CENTRAL KANSAS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT...BUT SPOTTERS ARE
ENCOURAGED TO REPORT HAIL A HALF INCH OR GREATER IN SIZE.

BOUSTEAD

In the hours before

Special weather statement, Sep 8, 3:05 AM CDT, 1 hour 33 minutes before
SIGNIFICANT WEATHER ALERT
NATIONAL WEATHER SERVICE TOPEKA KS
305 AM CDT MON SEP 8 2008

KSZ035-036-080830-
DICKINSON-GEARY-
305 AM CDT MON SEP 8 2008

THROUGH 330 AM CDT...A CLUSTER OF THUNDERSTORMS WILL MOVE NORTHEAST
AT 30 MPH ACROSS NORTHERN DICKINSON AND EASTERN GEARY COUNTIES.  AS
THESE STORMS PASS...EXPECT PENNY SIZE HAIL...STRONG WINDS OF 40 TO
50 MPH AND TORRENTIAL RAINFALL. SOME LOCATIONS THAT COULD BE
AFFECTED INCLUDE MILFORD STATE PARK...JUNCTION CITY...CHAPMAN AND
GRANDVIEW PLAZA. MOTORISTS ALONG INTERSTATE 70 BETWEEN MILE MARKERS
290 AND 301 COULD ALSO BE AFFECTED.
Special weather statement, Sep 8, 3:31 AM CDT, 1 hour 7 minutes before
SIGNIFICANT WEATHER ALERT
NATIONAL WEATHER SERVICE TOPEKA KS
331 AM CDT MON SEP 8 2008

KSZ038-039-055-080900-
OSAGE-SHAWNEE-WABAUNSEE-
331 AM CDT MON SEP 8 2008

THROUGH 400 AM CDT...A CLUSTER OF THUNDERSTORMS WILL MOVE NORTHEAST
AT 30 MPH ACROSS SOUTHERN WABAUNSEE...NORTHWEST OSAGE AND SOUTHWEST
SHAWNEE COUNTIES. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THIS CLUSTER OF STORMS IS CAPABLE OF PRODUCING PENNY SIZE
HAIL...STRONG WINDS OF 40 TO 50 MPH AND TORRENTIAL RAINFALL. SOME
LOCATIONS THAT COULD BE AFFECTED INCLUDE ESKRIDGE...HARVEYVILLE AND
DOVER. MOTORISTS ALONG THE KANSAS TURNPIKE BETWEEN MILE MARKERS 159
AND 167 COULD ALSO BE AFFECTED.
Special weather statement, Sep 8, 3:46 AM CDT, 52 minutes before
SIGNIFICANT WEATHER ALERT
NATIONAL WEATHER SERVICE TOPEKA KS
346 AM CDT MON SEP 8 2008

KSZ022-035-036-080915-
DICKINSON-GEARY-RILEY-
346 AM CDT MON SEP 8 2008

THROUGH 415 AM CDT...A CLUSTER OF THUNDERSTORMS WILL MOVE NORTHEAST
AT 30 MPH ACROSS NORTHEAST DICKINSON...GEARY...AND RILEY COUNTIES.
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THIS CLUSTER OF
STORMS IS CAPABLE OF PRODUCING PENNY SIZE HAIL...STRONG WINDS OF 40
TO 50 MPH AND TORRENTIAL RAINFALL. SOME LOCATIONS THAT COULD BE
AFFECTED INCLUDE GRANDVIEW PLAZA...OGDEN...JUNCTION CITY...KEATS AND
WESTERN MANHATTAN. MOTORISTS ALONG INTERSTATE 70 BETWEEN MILE
MARKERS 290 AND 315 COULD ALSO BE AFFECTED.
Special weather statement, Sep 8, 4:12 AM CDT, 26 minutes before
SIGNIFICANT WEATHER ALERT
NATIONAL WEATHER SERVICE TOPEKA KS
412 AM CDT MON SEP 8 2008

KSZ022-038-080945-
RILEY-WABAUNSEE-
412 AM CDT MON SEP 8 2008

THROUGH 445 AM CDT...A LINE OF THUNDERSTORMS WILL MOVE EASTWARD
THROUGH NORTHERN WABAUNSEE COUNTY. THIS LINE OF STORMS WILL BRING
WIND GUSTS NEAR 50 MPH AS WELL AS HEAVY DOWNPOURS. NATIONAL WEATHER
SERVICE DOPPLER RADAR INDICATED THIS CLUSTER OF STORMS IS ALSO
CAPABLE OF PRODUCING PENNY SIZE HAIL. SOME LOCATIONS THAT COULD BE
AFFECTED INCLUDE ALMA...MCFARLAND AND PAXICO. MOTORISTS ALONG
INTERSTATE 70 BETWEEN MILE MARKERS 317 AND 340 SHOULD BE PREPARED
FOR SUDDEN HEAVY DOWNPOURS AS WELL AS STRONG WINDS.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 4:50 AM CDTSevere Thunderstorm WarningTOPJefferson, Shawnee30 min
Sep 8, 6:05 AM CDTAreal Flood AdvisoryTOPJefferson82 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2008Every severe thunderstorm warning in 2008

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.