Alert archive / Kansas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 10, NWS Topeka, KS

March 8, 2002Lyon County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Mar 8, 2002, 9:48 PM CST for Lyon County, Kansas. It was in force for 27 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 8, 2002, 9:48 PM CST (03:48 UTC)
Expired: Mar 8, 2002, 10:15 PM CST
In force: 27 min
Issued by: NWS Topeka, KS
Area: Counties, with a storm outline in the text

County Lyon County, KS

What was reported inside it

Time	Report	Where	Remark
Mar 8, 9:50 PM CST	Hail 0.75	Emporia, KS
Mar 8, 10:00 PM CST	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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 8, 4:00 PM CST	Severe Thunderstorm Watch	SPC	6 hr
Mar 8, 9:00 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 3.8 hours before the alert went out and 87 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: 727 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 266 m²/s²
0-3 km storm-relative helicity: 332 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KTOP 090348
SVRTOP
KSC111-090415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
948 PM CST FRI MAR 8 2002

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

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

* UNTIL 1015 PM CST

* AT 942 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES WEST OF OLPE...OR ABOUT 10 MILES
  SOUTHWEST OF EMPORIA...MOVING NORTHEAST AT 50 MPH.

* SOME LOCATIONS AFFECTED...
  NEOSHO RAPIDS
  HARTFORD
  SOUTHERN PORTIONS OF EMPORIA

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.

LAT...LON 3837 9638 3820 9628 3820 9595 3860 9597

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 Mar 8, 4:46 PM CST, 5 hours 2 minutes earlier.

Area forecast discussion, Mar 8, 4:46 PM CST, 5 hours 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TOPEKA KS
330 PM CST FRI MAR 8 2002

APPEARS A SGFNT CONVECTIVE EVENT WILL EVOLVE OVER THE NEXT 9 HOURS.
VERY STG INFLOW TO WARMFNT OVER CNTRL AND NERN KS WILL PRECEDE
VIGOROUS UPPER WAVE MVG INTO THE PLAINS THIS EVENING. STG VERTICAL
MOTION ASSOCIATED WITH THE WAVE...ALONG WITH CONVERGENCE ALG SFC
BNDRY WILL SPELL SVR WX EVENT THIS EVENING. AGREE WITH SPC IN THAT
MAIN EVENT WILL BE HAIL AND WIND...BUT EARLY ON...ISOLATED TORNADOS
COULD NOT BE RULED OUT. BRN SHEAR VALUES VERY HIGH...DEEP LAYER
SHEAR MORE THAN SUFFICIENT FOR SVR STMS. GRADIENT VERY STG SO WINDS
WILL RESPOND ACCORDINGLY. THUS HAVE HOISTED A WIND ADVSRY ALL OF
AREA OVERNIGHT. WENT CATEGORICAL POPS EVERY WHERE OVRNGT. ALSO
POSTED A WINTER WX ADVSRY NWRN CWA WHERE LOW LVL THERMAL PATTERN
WILL NOT WARM ENUF BEFORE PCPN BEGINS THIS EVENING. LIKELY TO SEE A
WINTRY MIX UNTIL AT LEAST MIDN. REST OF AREA TO SEE RAPID CHG TO
FROZEN PCPN BY MIDN OR SHRTLY THEREAFTER.

REST OF FCST FAIRLY STRAIGHTFORWARD WITH LINGERING CHC FOR PCPN ON
MONDAY...THEN ANOTHER WAVE LATE IN THE WEEK FOR ANOTHER CHC FOR RAIN.

.TOP....A WINTER WEATHER ADVISORY UNTIL MIDNIGHT NWRN CWA NW
        OF A LINE FOR CONCORDIA TO WASHINGTON.
        WIND ADVISORY ALL OF CWA TONIGHT

FXUS63 KTOP 082246 RRA
AFDTOP

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TOPEKA KS
330 PM CST FRI MAR 8 2002

APPEARS A SGFNT CONVECTIVE EVENT WILL EVOLVE OVER THE NEXT 9 HOURS.
VERY STG INFLOW TO WARMFNT OVER CNTRL AND NERN KS WILL PRECEDE
VIGOROUS UPPER WAVE MVG INTO THE PLAINS THIS EVENING. STG VERTICAL
MOTION ASSOCIATED WITH THE WAVE...ALONG WITH CONVERGENCE ALG SFC
BNDRY WILL SPELL SVR WX EVENT THIS EVENING. AGREE WITH SPC IN THAT
MAIN EVENT WILL BE HAIL AND WIND...BUT EARLY ON...ISOLATED TORNADOS
COULD NOT BE RULED OUT. BRN SHEAR VALUES VERY HIGH...DEEP LAYER
SHEAR MORE THAN SUFFICIENT FOR SVR STMS. GRADIENT VERY STG SO WINDS
WILL RESPOND ACCORDINGLY. THUS HAVE HOISTED A WIND ADVSRY ALL OF
AREA OVERNIGHT. WENT CATEGORICAL POPS EVERY WHERE OVRNGT. ALSO
POSTED A WINTER WX ADVSRY NWRN CWA WHERE LOW LVL THERMAL PATTERN
WILL NOT WARM ENUF BEFORE PCPN BEGINS THIS EVENING. LIKELY TO SEE A
WINTRY MIX UNTIL AT LEAST MIDN. REST OF AREA TO SEE RAPID CHG TO
FROZEN PCPN BY MIDN OR SHRTLY THEREAFTER.

REST OF FCST FAIRLY STRAIGHTFORWARD WITH LINGERING CHC FOR PCPN ON
MONDAY...THEN ANOTHER WAVE LATE IN THE WEEK FOR ANOTHER CHC FOR RAIN.

.TOP...A WINTER WEATHER ADVISORY UNTIL MIDNIGHT NWRN CWA
       NW OF A LINE FOR CONCORDIA TO WASHINGTON.
       WIND ADVISORY ALL OF CWA TONIGHT.

In the hours before

Local storm report, Mar 8, 8:45 PM CST, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
845 PM CST FRI MAR 08 2002

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

0836 PM    HERINGTON                 KS    .75 INCH HAIL
03/08/02   DICKINSON

Local storm report, Mar 8, 9:08 PM CST, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
908 PM CST FRI MAR 08 2002

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

0850 PM    2 W COUNCIL GROVE         KS    .75 INCH HAIL
03/08/02   MORRIS

Local storm report, Mar 8, 9:13 PM CST, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
913 PM CST FRI MAR 08 2002

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

0809 PM    MANHATTAN                 KS    NON TSTM WINDS
03/08/02   RILEY                           60 MPH NON TSTM WINDS.
                                           NORTH PART OF THE CITY,
                                           AT THE FIRE DEPT.

0834 PM    WAMEGO                    KS    NON TSTM WINDS
03/08/02   POTTAWATOMIE                    58 MPH NON TSTM WINDS.

0834 PM    PAXICO                    KS    NON TSTM WINDS
03/08/02   WABAUNSEE                       70 MPH NON TSTM WINDS.
                                           LARGE TREE LIMBS DOWN

0905 PM    DELIA                     KS    WIND DAMAGE
03/08/02   JACKSON                         SIDING BLOWN OFF HOUSE

Local storm report, Mar 8, 9:17 PM CST, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
917 PM CST FRI MAR 08 2002

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

0900 PM    WILLARD                   KS    NON TSTM WINDS
03/08/02   SHAWNEE                         60 MPH NON TSTM WINDS.

Local storm report, Mar 8, 9:36 PM CST, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
936 PM CST FRI MAR 08 2002

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

0931 PM    (FOE)FORBES FLD TOPEKA    KS    69 MPH TSTM GUST
03/08/02   SHAWNEE                         ASOS MEASURED

0932 PM    AMERICUS                  KS    .75 INCH HAIL
03/08/02   LYON

Local storm report, Mar 8, 9:39 PM CST, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
939 PM CST FRI MAR 08 2002

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

0840 PM    ALMA                      KS    WIND DAMAGE
03/08/02   WABAUNSEE                       SEVERAL BUILDINGS
                                           DAMAGED IN ALMA

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 8, 7:19 PM CST	Severe Thunderstorm Warning	TOP	Clay, Cloud	26 min
Mar 8, 7:34 PM CST	Severe Thunderstorm Warning	TOP	Dickinson	41 min
Mar 8, 7:57 PM CST	Severe Thunderstorm Warning	TOP	Clay	33 min
Mar 8, 8:25 PM CST	Severe Thunderstorm Warning	TOP	Morris	50 min
Mar 8, 9:24 PM CST	Severe Thunderstorm Warning	TOP	Lyon	21 min
Mar 8, 9:25 PM CST	Severe Thunderstorm Warning	TOP	Shawnee	35 min
Mar 8, 9:45 PM CST	Severe Thunderstorm Warning	TOP	Osage	30 min
Mar 8, 10:06 PM CST	Severe Thunderstorm Warning	TOP	Douglas, Franklin	39 min
Mar 8, 10:10 PM CST	Severe Thunderstorm Warning	TOP	Osage	35 min
Mar 8, 10:45 PM CST	Severe Thunderstorm Warning	TOP	Douglas, Franklin	25 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2002 Every severe thunderstorm warning in 2002

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.