Alert archive / Missouri / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 78, NWS Kansas City, MO

June 12, 1998Worth County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 12, 1998, 12:24 AM CDT for Worth County, Missouri. It was in force for 51 min. No storm report in the archive falls 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.

The facts

Issued
Jun 12, 1998, 12:24 AM CDT (05:24 UTC)
Expired
Jun 12, 1998, 1:15 AM CDT
In force
51 min
Issued by
NWS Kansas City, MO
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Worth County, MO

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 5.4 hours before the alert went out and 184 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 1998-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 477 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 1998-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
477 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1339 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
23 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 
TTAA00 KMCI 120525
SVRMCI
MOC227-120615-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY-PLEASANT HILL MO
1224 AM CDT FRI JUN 12 1998

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
     WORTH COUNTY IN MISSOURI

* UNTIL 115 AM CDT

* AT 1224 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES WEST OF SHERIDAN...OR ABOUT 15 MILES 
  NORTHEAST OF MARYVILLE...MOVING EAST SOUTHEAST AT 35 MILES PER     
  HOUR.

* THE SEVERE THUNDERSTORM WILL BE...
     OVER SHERIDAN AT 1230 AM CDT
     NEAR GRANT CITY AT 1245 AM CDT
     5 MILES EAST OF DENVER AT 105 AM CDT

PEOPLE IN THE PATvH OF THIS STORM...CAN EXPECT ONE INCH SIZE 
HAIL...AND WIND GUSTS UP TO 60 MPH. FOR YOUR SAFETY...MOVE 
INDOORS...AND STAY AWAY FROM WINDOWS.

LAT...LON 4057 9464 4039 9462 4039 9422 4057 9425

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 Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 2:00 PM CDT, 10 hours 24 minutes earlier.

Area forecast discussion, Jun 11, 2:00 PM CDT, 10 hours 24 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
200 PM CDT THU JUN 11 1998

NEAR TERM PCPN TRENDS FIRST FCST CONCERN AND THEN JUST MAINLY TEMPS
WITH NEXT DECENT SHOT AT TSRA SAT NIGHT.

UPPER SUPPORT FROM WAVE LIFTING INTO WI RAPIDLY DECREASING SO WILL
HAVE TO DEPEND UPON FRONT/TROF TO PROVIDE LIFT FOR EARLY EVE
TSRA ACROSS SERN ZONES.  AT ANY RATE...EXPECT WHAT'S LEFT OF THEM TO
EITHER HAVE MOVED OUT AND/OR DISSIPATED AFTER SUNSET.  MOVEMENT OF
BOUNDARY WILL DEFINE WHAT PART (IF ANY) OF SERN ZONES NEED EVE POPS.

AFTER THAT...PRETTY QUIET UNTIL SAT NIGHT.  WILL NEED TO WATCH
CIRCULATION DROPPING SWD OUT OF ND FOR TMRW...PARTICULARLY FOR SERN
ZONES.  NOT FIGURING ON POPS ATTM....BUT WITH DECENT CAPE AND NOT
MUCH CIN...MID CREW WILL WANT TO LOOK AT AGAIN.  RIGHT NOW...THINK
LACK OF DECENT LIFT SHD PRECLUDE TSRA DVLPMT UNLESS SFC TROF IS
SHARPER AND/OR LIFT FROM NRN PLAINS WAVE IS STRONGER THAN MODELS
ADVERTISE.

WEAKENED VERSION OF FAIRLY LARGE W COAST TROF PROGGED TO ARRIVE SAT
NIGHT OR SUN.  LOOKS LIKE TYPICAL SETUP WHERE TSRA FIRE WELL W OF
AREA AND MOVE IN LATE.  AS A RESULT...WILL DELAY TSRA CHC UNTIL SAT
NIGHT.  IF MRF IS RIGHT...SUN-TUE MAY BE FAIRLY COOL AND WILL TREND
THAT WAY.

FWC PRETTY CLOSE THROUGHOUT AFTER MINOR ADJUSTMENTS.

.EAX...
MO...NONE.
KS...NONE.

JM

In the hours before

Local storm report, Jun 11, 8:27 PM CDT, 3 hours 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
827 PM CDT THU JUN 11 1998

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

0950 PM    ROELAND PARK              KS    WIND DAMAGE
06/10/98   JOHNSON                         TREES DOWN...TIME ESTD
Local storm report, Jun 11, 8:27 PM CDT, 3 hours 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
827 PM CDT THU JUN 11 1998

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

0950 PM    ROELAND PARK              KS    WIND DAMAGE
06/10/98   JOHNSON                         TREES DOWN...TIME ESTD

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 11:39 PM CDTTornado WarningEAXNodaway51 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1998Every severe thunderstorm warning in 1998

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.