Alert archive / Kansas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 308, NWS Wichita, KS
NWS Wichita, KS issued this severe thunderstorm warning at Sep 21, 2001, 12:12 AM CDT for Cowley County, Kansas. It was in force for 63 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
- Sep 21, 2001, 12:12 AM CDT (05:12 UTC)
- Expired
- Sep 21, 2001, 1:15 AM CDT
- In force
- 63 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), 60 km from the middle of the area, began a volume at 05:12 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 |
|---|---|---|---|
| Sep 21, 12:15 AM CDT | Hail 1 | Kellogg, 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
Lamont, OK (KLMN), launched 00:00Z, 5.2 hours before the alert went out and 78 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.
- Mixed-layer CAPE
- 644 J/kg
- Mixed-layer CIN
- -279 J/kg
- Mixed-layer LCL
- 1410 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
040 WUUS53 KICT 210512 SVRICT KSC035-210615- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WICHITA KS 1212 AM CDT FRI SEP 21 2001 THE NATIONAL WEATHER SERVICE IN WICHITA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... COWLEY COUNTY IN SOUTH CENTRAL KANSAS * UNTIL 115 AM CDT. * AT 1207 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER OXFORD...OR ABOUT 15 MILES NORTHWEST OF ARKANSAS CITY...MOVING EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR WINFIELD AROUND 1240 AM CDT... THE SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING HAIL UP TO THE SIZE OF QUARTERS... VERY HEAVY RAINFALL...WHICH MAY CAUSE LOCALIZED FLOODING... VERY FREQUENT AND DEADLY CLOUD-TO-GROUND LIGHTNING... STAY AWAY FROM WINDOWS. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. REPEATING...A SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR COWLEY COUNTY UNTIL 115 AM CDT. LAT...LON 3730 9715 3720 9715 3708 9690 3725 9683 /HYSELL 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 Sep 20, 9:25 PM CDT, 2 hours 47 minutes earlier.
Area forecast discussion, Sep 20, 9:25 PM CDT, 2 hours 47 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WICHITA KS 925 PM CDT THU SEP 20 2001 DESPITE STRONG INSTABILITY ACROSS THE FORECAST AREA TODAY...SVR TSRA DID NOT FORM. APPEARS WE WERE CAUGHT BETWEEN TWO SHORTWAVES...THE FIRST ACROSS THE GREAT LAKES AND THE SECOND IN NEW MEXICO PER WATER VAPOR SAT PIX. SFC BOUNDARY STILL ALONG A LYONS TO MCPHERSON LINE AT 02Z...SO WILL KEEP PCPN CHANCES FROM LYONS TO COTTONWOOD FALLS AND POINTS SOUTH. LAPS DATA STILL INDICATED GOOD ELEVATED INSTABILITY SOUTH OF THE SFC BOUNDARY...AND LATEST ETA RUN KEEPS THIS ELEVATED AXIS OF INSTABILITY ACROSS SC/SE ZONES THROUGH 12Z FRIDAY. WOULD EXPECT PCPN CHANCES TO DIMINISH AFTER MIDNIGHT AS THETA-E ADVECTION/WAA DIMINISH. OTHERWISE...WILL BUMP UP LOWS IN ICT ZONES AS FRONT NOT PROGGED TO PUSH THROUGH ICT UNTIL VERY LATE TONIGHT. HYSELL .ICT...NONE.
In the hours before
Special weather statement, Sep 20, 7:44 PM CDT, 4 hours 28 minutes before
KSZ050>053-067>072-082-083-091>096-098>100-210115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA KS 744 PM CDT THU SEP 20 2001 ...SEVERE THUNDERSTORM WATCH NUMBER 747 HAS BEEN CANCELLED... SEVERE THUNDERSTORM WATCH NUMBER 747...IN EFFECT FOR SOUTHEAST...SOUTH CENTRAL AND A SMALL PORTION OF CENTRAL KANSAS...HAS BEEN CANCELLED. WHILE WIDELY SCATTERED THUNDERSTORMS ARE STILL POSSIBLE TONIGHT...THE THREAT FOR WIDESPREAD SEVERE WEATHER HAS DIMINISHED.
The office that day
Everything else NWS Wichita, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 11:28 PM CDT | Severe Thunderstorm Warning | ICT | Sumner | 62 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 2001Every 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.