Alert archive / Kansas / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 176, NWS Wichita, KS

July 20, 2010Chase County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Jul 20, 2010, 7:15 PM CDT for Chase County, Kansas. It was in force for 45 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 20, 2010, 7:15 PM CDT (00:15 UTC)
Expired: Jul 20, 2010, 8:00 PM CDT
In force: 45 min
Issued by: NWS Wichita, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Chase County, KS

The radar

The Topeka radar (KTWX), 83 km from the middle of the area, began a volume at 00:16 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
Jul 20, 4:33 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 0.3 hours before the alert went out and 114 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: 1632 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 965 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 20, 6:26 PM CDT, 49 minutes earlier.

Area forecast discussion, Jul 20, 6:26 PM CDT, 49 minutes before

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Hazardous weather outlook, Jul 20, 4:28 PM CDT, 2 hours 47 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WICHITA KS
428 PM CDT TUE JUL 20 2010

KSZ032-033-047>053-067>072-082-083-091>096-098>100-212130-
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-
428 PM CDT TUE JUL 20 2010

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

.DAY ONE...TONIGHT

SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HAIL UP TO THE SIZE OF
GOLFBALLS AND 60 MPH GUSTS ARE POSSIBLE OVER CENTRAL KANSAS. VERY
HEAVY RAINS ARE ALSO LIKELY AND MAY CAUSE LOCALIZED FLOODING.

DANGEROUS HEAT INDICES OF 105 TO 110 WILL PLAGUE SOUTH-CENTRAL AND
SOUTHEAST KANSAS UNTIL AROUND 8 PM. HEAT INDICES OF 100 TO 104 ARE
LIKELY OVER CENTRAL KANSAS THIS EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HEAT INDICES OF 105 TO 110 ARE LIKELY OVER SOUTH-CENTRAL AND
SOUTHEAST KANSAS WEDNESDAY AFTERNOON AND WEDNESDAY EVENING...WITH
100 TO 105 DEGREE INDICES LIKELY OVER CENTRAL KANSAS. HEAT INDICES
OF 100 TO 104 ARE LIKELY OVER MOST AREAS THURSDAY AND FRIDAY
AFTERNOONS.

A FEW THUNDERSTORMS ARE POSSIBLE OVER PRIMARILY CENTRAL KANSAS
FRIDAY NIGHT...AND OVER THE REMAINING AREAS FROM SATURDAY THROUGH
SUNDAY. THESE THUNDERSTORMS MAY BE QUITE STRONG WITH NICKEL-SIZED
HAIL AND 50 TO 55 MPH WINDS.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS POSSIBLE THIS EVENING OVER PRIMARILY
CENTRAL KANSAS.

&&

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

ES

In the hours before

Special weather statement, Jul 20, 6:31 PM CDT, 44 minutes before

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Special weather statement, Jul 20, 6:32 PM CDT, 43 minutes before

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Special weather statement, Jul 20, 6:42 PM CDT, 33 minutes before

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Special weather statement, Jul 20, 6:43 PM CDT, 32 minutes before

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Special weather statement, Jul 20, 6:54 PM CDT, 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA KS
654 PM CDT TUE JUL 20 2010

KSZ053-210030-
CHASE-
654 PM CDT TUE JUL 20 2010

...THE NATIONAL WEATHER SERVICE IN WICHITA HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY FOR CHASE COUNTY...

AT 651 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTHWEST OF
AMERICUS TO ELMDALE...AND MOVING SOUTHEAST AT 20 MPH.

DIME SIZE HAIL...AND WINDS TO 50 MPH ARE POSSIBLE WITH THESE STORMS.

THESE STORMS MAY PRODUCE PONDING OF WATER ON ROADWAYS.

DARMOFAL

Local storm report, Jul 20, 7:08 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WICHITA KS
708 PM CDT TUE JUL 20 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0703 PM     FLOOD            1 NW GREAT BEND         38.37N 98.82W
07/20/2010                   BARTON             KS   LAW ENFORCEMENT

            LAW ENFORCEMENT REPORTS NW 30TH ST IS BEGINNING TO FLOOD.

&&

DUNTEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 7:44 PM CDT	Severe Thunderstorm Warning	ICT	Barton	46 min
Jul 20, 7:59 PM CDT	Severe Thunderstorm Warning	ICT	Chase, Greenwood	46 min
Jul 20, 8:26 PM CDT	Tornado Warning	ICT	Chase	34 min
Jul 20, 8:58 PM CDT	Severe Thunderstorm Warning	ICT	Chase, Greenwood	26 min
Jul 20, 9:11 PM CDT	Tornado Warning	ICT	Greenwood	49 min
Jul 20, 9:53 PM CDT	Severe Thunderstorm Warning	ICT	Greenwood	19 min
Jul 20, 10:52 PM CDT	Areal Flood Warning	ICT	Greenwood	8 hr
Jul 21, 12:43 AM CDT	Areal Flood Warning	ICT	McPherson	7 hr
Jul 21, 12:51 AM CDT	Areal Flood Warning	ICT	Marion	6 hr
Jul 21, 1:00 AM CDT	Severe Thunderstorm Warning	ICT	McPherson, Marion	60 min
Jul 21, 3:20 AM CDT	Heat Advisory	ICT	Barton, Ellsworth, Lincoln, McPherson, Rice, Russell and 1 more	24 hr
Jul 21, 5:03 AM CDT	Areal Flood Warning	ICT	Lincoln	5 hr

Nearby

Severe Thunderstorm Warnings in Kansas, 2010 Every 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.