Alert archive / Kansas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 131, NWS Topeka, KS

August 1, 2013Marshall County, Nemaha County, Washington County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Aug 1, 2013, 9:58 PM CDT for Marshall County, Nemaha County, Washington County, Kansas. It was in force for 47 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
Aug 1, 2013, 9:58 PM CDT (02:58 UTC)
Expired
Aug 1, 2013, 10:45 PM CDT
In force
47 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Marshall County, KS, Nemaha County, KS, Washington County, KS

The radar

The Topeka radar (KTWX), 91 km from the middle of the area, began a volume at 02:58 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 (KFOE), launched 00:00Z, 3.0 hours before the alert went out and 117 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 2013-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 155 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 2013-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.1939587897Sfc1 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
155 J/kg
Mixed-layer CIN
-157 J/kg
Mixed-layer LCL
1847 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
41 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 Aug 1, 9:17 PM CDT, 41 minutes earlier.

Area forecast discussion, Aug 1, 9:17 PM CDT, 41 minutes before
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Hazardous weather outlook, Aug 1, 3:57 PM CDT, 6 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TOPEKA KS
357 PM CDT THU AUG 1 2013

KSZ008>012-020>024-026-034>040-054>056-058-059-022100-
REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY-
POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS-
WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON-
357 PM CDT THU AUG 1 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS WILL MOVE INTO THE AREA FROM NEBRASKA THIS
EVENING...AND WILL CONTINUE THROUGH THE OVERNIGHT HOURS. SOME OF
THESE STORMS MAY BE SEVERE WITH DAMAGING WINDS...PARTICULARLY THIS
EVENING DURING THE EVENING HOURS NORTH OF INTERSTATE 70. HAIL AND
HEAVY RAIN WILL ALSO BE POSSIBLE. THE POTENTIAL FOR SEVERE WEATHER
IS LOWER SOUTH OF INTERSTATE 70...BUT SMALL HAIL AND GUSTY WINDS
REMAIN POSSIBLE THROUGH THE OVERNIGHT HOURS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THUNDERSTORM CHANCES CONTINUE ON FRIDAY AND FRIDAY NIGHT FOR MOST
OF NORTHEAST KANSAS.  SOME OF THE STORMS MAY BE CAPABLE OF
PRODUCING HAIL...STRONG WINDS AND LOCALLY HEAVY RAINFALL.

OFF AND ON CHANCES FOR THUNDERSTORMS CONTINUE THROUGH THE WEEKEND
AND INTO EARLY NEXT WEEK.

WITH SEVERAL CHANCES FOR THUNDERSTORMS THROUGH THE COMING WEEK...
AND MUCH OF THE AREA HAVING RECEIVED HEAVY RAINFALL IN LATE
JULY...THERE IS SOME POTENTIAL FOR FLOODING THROUGHOUT THE WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT.

In the hours before

Special weather statement, Aug 1, 9:33 PM CDT, 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
933 PM CDT THU AUG 1 2013

KSZ009-010-020315-
MARSHALL-WASHINGTON-
933 PM CDT THU AUG 1 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MARSHALL AND EASTERN
WASHINGTON COUNTIES...

THROUGH 1015 PM CDT...A LINE OF STRONG THUNDERSTORMS WILL MOVE
SOUTHEAST AT 30 MPH ACROSS PORTIONS OF NORTHERN MARSHALL AND EASTERN
WASHINGTON COUNTIES. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THESE CLUSTER OF STORMS ARE CAPABLE OF PRODUCING STRONG WINDS AROUND
50 MPH AND FREQUENT LIGHTNING. SOME LOCATIONS THAT COULD BE AFFECTED
INCLUDE HOLLENBURG...HANOVER...OKETO...BREMEN...WASHINGTON...
SUMMERFIELD...MARYSVILLE...GREENLEAF...BEATTIE...BARNES AND AXTELL.

STAY ALERT TO THE WEATHER IN CASE A WARNING IS ISSUED.

&&

LAT...LON 4000 9627 3995 9624 3985 9624 3966 9700
      4001 9719
TIME...MOT...LOC 0232Z 337DEG 28KT 4001 9708 4017 9649

BOWEN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 9:33 PM CDTSpecial Weather StatementTOPMarshall42 min
Aug 1, 10:18 PM CDTSpecial Weather StatementTOPNemaha27 min
Aug 1, 10:45 PM CDTSpecial Weather StatementTOPMarshall45 min
Aug 2, 1:37 AM CDTAreal Flood AdvisoryTOPClay, Cloud, Republic3 hr
Aug 2, 3:04 AM CDTFlash Flood WarningTOPClay, Dickinson4 hr
Aug 2, 6:29 AM CDTRiver Flood WarningTOPDickinson52 hr
Aug 2, 7:08 AM CDTAreal Flood WarningTOPClay, Dickinson6 hr
Aug 2, 8:00 AM CDTRiver Flood WarningTOPCloud26 hr
Aug 2, 8:00 AM CDTRiver Flood WarningTOPClay59 hr
Aug 2, 9:13 AM CDTRiver Flood WarningTOPClay, Cloud8 hr
Aug 2, 9:13 AM CDTRiver Flood WarningTOPGeary25 hr
Aug 2, 9:13 AM CDTRiver Flood WarningTOPDickinson25 hr
Aug 2, 9:13 AM CDTRiver Flood WarningTOPDickinson25 hr
Aug 2, 1:00 PM CDTAreal Flood WarningTOPDickinson4 hr

Nearby

Severe Thunderstorm Warnings in Kansas, 2013Every severe thunderstorm warning in 2013

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.