Alert archive / Kansas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 157, NWS Topeka, KS

October 4, 2013Coffey County, Lyon County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Oct 4, 2013, 7:32 PM CDT for Coffey County, Lyon County, Kansas. It was in force for 28 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: Oct 4, 2013, 7:32 PM CDT (00:32 UTC)
Expired: Oct 4, 2013, 8:00 PM CDT
In force: 28 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Coffey County, KS, Lyon County, KS

The radar

The Topeka radar (KTWX), 77 km from the middle of the area, began a volume at 00:35 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.

Issued	Product	Office	Lasted
Oct 4, 3:11 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 00:00Z, 0.5 hours before the alert went out and 77 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: 1235 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1803 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.9

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 Oct 4, 6:50 PM CDT, 42 minutes earlier.

Area forecast discussion, Oct 4, 6:50 PM CDT, 42 minutes before

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Hazardous weather outlook, Oct 4, 3:40 PM CDT, 3 hours 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TOPEKA KS
340 PM CDT FRI OCT 4 2013

KSZ008>012-020>024-026-034>040-054>056-058-059-052045-
REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY-
POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS-
WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON-
340 PM CDT FRI OCT 4 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE THROUGH THE
OUTLOOK AREA THIS EVENING...WITH SOME LINGERING STORMS OVERNIGHT
IN EAST CENTRAL KANSAS. THE THUNDERSTORMS ARE EXPECTED TO MAINLY
AFFECT COUNTIES EAST OF AN ABILENE TO MARYSVILLE LINE. DAMAGING
STRAIGHT LINE WINDS AND HAIL WILL BE THE MAIN HAZARDS. AN ISOLATED
TORNADO IS ALSO POSSIBLE ESPECIALLY IN FAR NORTHEAST KANSAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND EVENING.

In the hours before

Special weather statement, Oct 4, 6:13 PM CDT, 1 hour 19 minutes before

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Special weather statement, Oct 4, 6:18 PM CDT, 1 hour 14 minutes before

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Special weather statement, Oct 4, 6:43 PM CDT, 49 minutes before

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Local storm report, Oct 4, 6:44 PM CDT, 48 minutes before

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Local storm report, Oct 4, 6:45 PM CDT, 47 minutes before

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Local storm report, Oct 4, 6:59 PM CDT, 33 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
Oct 4, 7:00 PM CDT	Special Weather Statement	TOP	Shawnee	30 min
Oct 4, 7:13 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Osage, Shawnee	47 min
Oct 4, 7:25 PM CDT	Special Weather Statement	TOP	Lyon	35 min
Oct 4, 7:50 PM CDT	Special Weather Statement	TOP	Douglas	25 min
Oct 4, 7:59 PM CDT	Special Weather Statement	TOP	Osage	46 min
Oct 4, 8:27 PM CDT	Special Weather Statement	TOP	Franklin	48 min
Oct 4, 9:29 PM CDT	Special Weather Statement	TOP	Anderson	16 min
Oct 4, 9:50 PM CDT	Special Weather Statement	TOP	Anderson	40 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2013 Every 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.