Alert archive / Kansas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 20, NWS Wichita, KS

April 9, 2001Cowley County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Apr 9, 2001, 11:08 PM CDT for Cowley County, Kansas. It was in force for 37 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Apr 9, 2001, 11:08 PM CDT (04:08 UTC)
Expired: Apr 9, 2001, 11:45 PM CDT
In force: 37 min
Issued by: NWS Wichita, KS
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Cowley County, KS

The radar

The Wichita radar (KICT), 78 km from the middle of the area, began a volume at 04:12 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.

What was reported inside it

Time	Report	Where	Remark
Apr 9, 11:18 PM CDT	Hail 0.75	Dexter, KS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 4.1 hours before the alert went out and 215 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: 18 J/kg
Mixed-layer CIN: -352 J/kg
Mixed-layer LCL: 1725 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KICT 100408
SVRICT
KSC035-100445-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WICHITA KS
1108 PM CDT MON APR 9 2001

THE NATIONAL WEATHER SERVICE IN WICHITA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COWLEY COUNTY IN SOUTH CENTRAL KANSAS

* UNTIL 1145 PM CDT.

* AT 1100 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES SOUTH OF DEXTER...OR ABOUT 18 MILES
  EAST OF ARKANSAS CITY...MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS NEAR THE PATH OF THE STORM THROUGH 1145 PM CDT...   
  BURDEN AND CAMBRIDGE...

THE SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING
  HAIL UP TO THE SIZE OF DIMES...

STAY AWAY FROM WINDOWS. AVOID USING THE TELEPHONE OR OTHER ELECTRICAL
EQUIPMENT...WHILE LIGHTNING IS IN THE AREA.

REPEATING...A SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR COWLEY
COUNTY UNTIL 1145 PM CDT.

LAT...LON 3718 9684 3712 9661 3741 9653 3742 9673

/DARMOFAL

NNNN

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 Apr 9, 9:28 PM CDT, 1 hour 40 minutes earlier.

Area forecast discussion, Apr 9, 9:28 PM CDT, 1 hour 40 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WICHITA KS
928 PM CDT MON APR 9 2001

...UPDATED...
ONLY ONE MARGINALLY SVR STM SO FAR THIS EVE ACRS THE ICT CWA...THAT
BEING IN EXTREME EASTERN ALLEN COUNTY ARND 01Z. ENHANCED CNVGNC OVR
OUTFLOW BNDRY WAS THE PROBABALE CULPRIT FOR THE REPEAT INTENSE STM
DVLPMT OVR ALLEN/BOURBON COUNTIES IN PROXIMITY TO MODEST LO LVL JET.
WK S/W MOVG FM THE PANHANDLES TWD SCNTRL KS MAY HAVE AIDED LIFT.

AREA SOUNDINGS AT SGF AND OUN MODIFIED FOR THE SRN CWA IMPLIED
ELEVATED POTNL INSTBY/CAPE ARND 2000 J/KG. THE LO LVL JET WL BE THE
FORCING MECHANISM TO INITIATE ANY CNVTN ALG/N OF BNDRY ACRS THE CWA
OVRNGT. AT THE MOMENT...IT LOOKS LIKE THE S/W MOVG ACRS THE AREA AND
CNVTN TO THE E WAS INDUCING A WK SFC WAVE ALONG THE FNT...WITH THE
NEAR SFC FLO BACKD MORE N/NELY FM ICT NWD INTO CNTRL KS. THEREFORE
THE RETURN LO LVL FLO/JET DVLPMT MAY BE DELAYED A BIT TO GET CNVTN
GOING ACRS AREAS W OF THE FLINT HILLS TWD OR AFT MDNGT.

HOWEVER...WL KEEP TSRA CHCS GOING OVRNGT...WITH HIGHEST POPS CONTG
ACRS SERN KS. TEMPS MAY NEED TO BE NUDGED UP IN SERN KS WHERE MUGGY
DWPTS SHOULD RMN IN THE LOW TO MID 60S.

DARMOFAL

.ICT...NONE.

In the hours before

Special weather statement, Apr 9, 6:42 PM CDT, 4 hours 26 minutes before

KSZ032-033-047>053-067>072-082-083-091>096-098>100-101242-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA KS
542 PM CST MON APR 9 2001

THE NATIONAL WEATHER SERVICE IN WICHITA HAS DEACThIVATED OUR SKYWARN
SPOTTER NETWORK.

NNNN

Special weather statement, Apr 9, 6:42 PM CDT, 4 hours 26 minutes before

KSZ032-033-047>053-067>072-082-083-091>096-098>100-101242-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA KS
642 PM CDT MON APR 9 2001

THE NATIONAL WEATHER SERVICE IN WICHITA HAS DEACTIVATED OUR SKYWARN
SPOTTER NETWORK.

NNNN

Special weather statement, Apr 9, 6:47 PM CDT, 4 hours 21 minutes before

KSZ070>072-093>096-098>100-100015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA KS
647 PM CDT MON APR 9 2001

...TORNADO WATCH NUMBER 108 IS NO LONGER IN EFFECT...

THE TORNADO WATCH ISSUED EARLIER FOR SOUTHEAST KANSAS...AND A SMALL
PORTION OF SOUTH CENTRAL KANSAS...IS NO LONGER IN EFFECT.  THE
COUNTIES CLEARED FROM THE WATCH INCLUDE... ALLEN, BOURBON,
CHAUTAUQUA, CHEROKEE, COWLEY, CRAWFORD, ELK, GREENWOOD, LABETTE,
MONTGOMERY, NEOSHO, WILSON AND WOODSON.

STRONG TO SEVERE THUNDERSTORMS STILL COULD DEVELOP LATE THIS EVENING
OR OVERNIGHT.  IN ADDITION...LOCALLY HEAVY RAIN MAY BE POSSIBLE
FROM THESE STORMS.

HOWERTON

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 11:33 PM CDT	Severe Thunderstorm Warning	ICT	Elk	42 min
Apr 9, 11:59 PM CDT	Tornado Warning	ICT	Elk	31 min
Apr 10, 12:32 AM CDT	Severe Thunderstorm Warning	ICT	Wilson	43 min
Apr 10, 1:19 AM CDT	Severe Thunderstorm Warning	ICT	Allen	41 min
Apr 10, 1:47 AM CDT	Severe Thunderstorm Warning	ICT	Woodson	43 min
Apr 10, 11:39 AM CDT	Severe Thunderstorm Warning	ICT	Kingman	66 min
Apr 10, 11:50 AM CDT	Severe Thunderstorm Warning	ICT	Harper	55 min
Apr 10, 11:57 AM CDT	Severe Thunderstorm Warning	ICT	Sedgwick	63 min
Apr 10, 12:13 PM CDT	Severe Thunderstorm Warning	ICT	Marion	62 min
Apr 10, 12:16 PM CDT	Severe Thunderstorm Warning	ICT	Reno	59 min
Apr 10, 12:31 PM CDT	Severe Thunderstorm Warning	ICT	Harvey	59 min
Apr 10, 12:58 PM CDT	Severe Thunderstorm Warning	ICT	McPherson	62 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.