Alert archive / Kansas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 135, NWS Topeka, KS

September 11, 2000Coffey County, Lyon County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Sep 11, 2000, 8:31 PM CDT for Coffey County, Lyon County, Kansas. It was in force for 29 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Sep 11, 2000, 8:31 PM CDT (01:31 UTC)
Expired: Sep 11, 2000, 9:00 PM CDT
In force: 29 min
Issued by: NWS Topeka, KS
Area: Whole counties

Counties Coffey County, KS, Lyon County, KS

What was reported inside it

Time	Report	Where	Remark
Sep 11, 8:45 PM CDT	Hail 0.75	Neosho Rapids, KS
Sep 11, 8:50 PM CDT	Hail 1	Neosho Rapids, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 11, 4:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.5 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: 901 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 3268 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

980 
WUUS53 KTOP 120131
SVRTOP
KSC031-111-120200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
831 PM CDT MON SEP 11 2000

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN COFFEY COUNTY IN EAST CENTRAL KANSAS   
  EAST CENTRAL LYON COUNTY IN EAST CENTRAL KANSAS

* UNTIL 900 PM CDT

* AT 828 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES WEST OF NEOSHO RAPIDS...OR ABOUT 7
  MILES EAST OF EMPORIA...MOVING EAST AT 25 MPH.

* SOME LOCATIONS AFFECTED...
  HARTFORD
  LEBO

THIS WARNING REPLACES THE WARNING FOR CENTRAL LYON COUNTY.

LARGE HAIL...VERY HEAVY RAIN AND DAMAGING WINDS ARE LIKELY WITH THIS
STORM. TAKE COVER INSIDE A BUILDING.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE
LATEST SEVERE WEATHER INFORMATION.

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 Sep 11, 3:00 PM CDT, 5 hours 31 minutes earlier.

Area forecast discussion, Sep 11, 3:00 PM CDT, 5 hours 31 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TOPEKA KS
300 PM CDT MON SEP 11 2000

POTENTIAL FOR TSTMS MAIN FORECAST PROBLEM. STILL STG CAP IN PLACE
AND SAT. TEMPS INDICATED A BIT MORE MID LVL WARMING SINCE 12Z. THUS
WILL NEED TO SEE SOME COOLING ALFT. THIS CAA IS EVIDENT ON SATELLITE
TMPS/CLOUD DVLPMT SRN NE INTO NWRN KS/NERN CO. AS THIS COOLING MOVES
OVER ERN KS VERY LATE THIS AFTN AND THIS EVENING...SHOULD SEE SOME
TSTMS DVLP RAPIDLY. ACTUALLY COULD SEE DVLPMT BEHIND SFC BNDRY WITH
ELEVATED TYPE STMS. STG GUSTY WINDS WILL BE MAIN THREAT. TSTMS OUT
OF PICTURE BY MIDNIGHT...WITH CLEAR SAILING AFTER THAT. WENT A BIT
COOLER NWRN CWA OVERNIGHT...WITH DEW POINTS ALREADY IN THE LOWER 40S
NORTHERN NEBRASKA. FOLLOWING MESO-ETA SFC TEMPERATURES FOR FORECAST
AFTN TEMPERATURE TRENDS TMRW/WED. THUS WILL GO A BIT ABOVE FWC MOS
TEMPERATURES ON TUESDAY...AND ABOVE ON WEDNESDAY TOO...PERHAPS MORE
IN LINE WITH FAN/MAV GUIDANCE.

.TOP...NONE

In the hours before

Local storm report, Sep 11, 7:45 PM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
745 PM CDT MON SEP 11 2000

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0735 PM    ADMIRE                    KS    .75 INCH HAIL
09/11/00   LYON

0740 PM    BALDWIN                   KS    1 INCH HAIL
09/11/00   DOUGLAS

0745 PM    BALDWIN                   KS    1.75 INCH HAIL
09/11/00   DOUGLAS

Z

Local storm report, Sep 11, 7:49 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
749 PM CDT MON SEP 11 2000

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0747 PM    4 N OVERBROOK             KS    60 MPH TSTM GUST
09/11/00   OSAGE

Local storm report, Sep 11, 8:07 PM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
807 PM CDT MON SEP 11 2000

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0805 PM    BALDWIN                   KS    1.75 INCH HAIL
09/11/00   DOUGLAS                         ALSO GETTING WIND GUSTS
                                           OF 50 TO 60 MPH.

Local storm report, Sep 11, 8:11 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
811 PM CDT MON SEP 11 2000

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....
:
0805 PM    3 NE EMPORIA              KS    60 MPH TSTM GUST
09/11/00   LYON

Local storm report, Sep 11, 8:19 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
819 PM CDT MON SEP 11 2000

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0810 PM    7 N OTTAWA                KS    1 INCH HAIL
09/11/00   FRANKLIN

0814 PM    LE LOUP                   KS    1.75 INCH HAIL
09/11/00   FRANKLIN

0814 PM    LE LOUP                   KS    60 MPH TSTM GUST
09/11/00   FRANKLIN
A
0814 PM    10 SW EMPORIA             KS    .88 INCH HAIL
09/11/00   LYON

Local storm report, Sep 11, 8:24 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
824 PM CDT MON SEP 11 2000

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0819 PM    6 SE BALDWIN              KS    1.75 INCH HAIL
09/11/00   DOUGLAS

0820 PM    WELLSVILLE                KS    1.75 INCH HAIL
09/11/00   FRANKLIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 11, 7:29 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin	31 min
Sep 11, 7:30 PM CDT	Severe Thunderstorm Warning	TOP	Lyon	30 min
Sep 11, 7:39 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Osage	36 min
Sep 11, 7:50 PM CDT	Severe Thunderstorm Warning	TOP	Lyon	45 min
Sep 11, 7:51 PM CDT	Severe Thunderstorm Warning	TOP	Osage	39 min
Sep 11, 8:00 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin	15 min
Sep 11, 8:15 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin	45 min
Sep 11, 8:44 PM CDT	Severe Thunderstorm Warning	TOP	Coffey, Osage	36 min
Sep 11, 8:58 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Franklin	32 min
Sep 11, 9:05 PM CDT	Severe Thunderstorm Warning	TOP	Coffey	40 min
Sep 11, 9:23 PM CDT	Severe Thunderstorm Warning	TOP	Anderson	47 min
Sep 11, 9:44 PM CDT	Severe Thunderstorm Warning	TOP	Coffey	46 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2000 Every severe thunderstorm warning in 2000

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.