Alert archive / Indiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 71, NWS Paducah, KY

April 30, 1997Warrick County, Indiana

NWS Paducah, KY issued this severe thunderstorm warning at Apr 30, 1997, 7:40 PM CDT for Warrick County, Indiana. It was in force for 50 min. 1 report 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: Apr 30, 1997, 7:40 PM CDT (00:40 UTC)
Expired: Apr 30, 1997, 8:30 PM CDT
In force: 50 min
Issued by: NWS Paducah, KY
Area: Whole counties

County Warrick County, IN

What was reported inside it

Time	Report	Where	Remark
Apr 30, 8:00 PM CDT	Hail 0.75	Newburgh, IN

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
Apr 30, 5:30 PM CDT	Tornado Watch	SPC	6 hr
Apr 30, 6:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.7 hours before the alert went out and 226 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: 70 J/kg
Mixed-layer CIN: -236 J/kg
Mixed-layer LCL: 1685 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 308 m²/s²
0-3 km storm-relative helicity: 433 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

648 
WUUS1 KPAH 010041 RRA
SVRPAH
INC173-010130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
740 PM CDT WED APR 30 1997
 
THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  830 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST INDIANA
 
   ...WARRICK COUNTY
 
A SEVERE THUNDERSTORM IS EXPECTED TO MOVE THROUGH OR NEAR BOONEVILLE
AROUND 8 PM CDT.
 
THE MAIN THREAT IS LARGE HAIL AND DAMAGING WINDS.
 
AT 740 PM DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES EAST OF
EVANSVILLE NEAR NEWBURGH. MOVEMENT WAS NORTHEAST AT 40 MPH.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
SPODEN

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 Paducah, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 30, 1:17 PM CDT, 6 hours 23 minutes earlier.

Area forecast discussion, Apr 30, 1:17 PM CDT, 6 hours 23 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
115 PM CDT WED APR 30 1997

INITIAL FORECAST PROBLEM IS COLD FRONT MOVING ACROSS MISSOURI AT 17Z.
MORNING RAOBS AND RUC DATA INDICATE STRONG CAPPING OVER THE REGION
SHOULD WEAKEN AS DAYTIME HEATING AND WARM MOIST ADVECTION CONTINUE.
700 MB COOLING IS PROGGED TO BEGIN LATE THIS AFTERNOON...WHICH WOULD
ERASE THE CAP AROUND THE TIME OF FRONTAL PASSAGE. KLSX RADAR AT 18Z
SHOWS INTENSE CONVECTION OVER NE MISSOURI. WILL HAVE TO MONITOR FOR
MORE CONVECTION DEVELOPING SOUTHWARD THIS AFTERNOON AND EVENING.
HIGHER CHANCE OF STORM DEVELOPMENT SHOULD BE TO THE NORTH...WHERE CAP
IS WEAKER AND DYNAMIC FORCING WILL BE STRONGER.

FRONTAL PASSAGE SHOULD BE AROUND 02Z AT KPAH AND 03-04Z AT KEVV. THIS
SHOULD END THUNDERSTORM THREAT. COLD AIR ADVECTION BEHIND FRONT IS
FAIRLY IMPRESSIVE. NGM BRINGS 850 ZERO DEGREE ISOTHERM DOWN TO KEVV
BY 12Z THURSDAY. HOWEVER...THE ATMOSPHERE SHOULD REMAIN WELL MIXED
AS BOUNDARY LAYER WINDS STAY AROUND 20 KNOTS OVERNIGHT. FWC AND FAN
INDICATE UPPER 40S FOR LOWS TONIGHT...WHICH LOOKS REASONABLE.

SURFACE HIGH PRESSURE WILL CROSS THE FA THURSDAY...ENDING THE
COLD ADVECTION. NGM EVEN HINTS AT RETURN FLOW BY 00Z FRIDAY.
TEMPS SHOULD RECOVER NICELY WITH STRONG SOLAR HEATING AND NEUTRAL
TEMP ADVECTION. FAN/FWC HIGHS APPEAR IN THE BALLPARK.

MY

In the hours before

Local storm report, Apr 30, 7:20 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
720 PM CDT WED APR 30 1997

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

0650 PM    LOWES                     KY   WIND DAMAGE
04/30/97   GRAVES                         POWER LINES DOWN

0700 PM    LEDBETTER                 KY   55 MPH TSTM GUST
04/30/97   LIVINGSTON

0718 PM    CALVERT CITY              KY   55 MPH TSTM GUST
04/30/97   MARSHALL

RLS

Local storm report, Apr 30, 7:22 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
720 PM CDT WED APR 30 1997

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

0650 PM    LOWES                     KY   WIND DAMAGE
04/30/97   GRAVES                         POWER LINES DOWN

0700 PM    LEDBETTER                 KY   55 MPH TSTM GUST
04/30/97   LIVINGSTON

0718 PM    CALVERT CITY              KY   55 MPH TSTM GUSTt
04/30/97   MARSHALL

RLS

Local storm report, Apr 30, 7:24 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
724 PM CDT WED APR 30 1997

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

0720 PM    REIDLAND                  KY   65 MPH TSTM GUST
04/30/97   MCCRACKEN                      REPORTED BY NWS EMPLOYEE

SHANKLIN

Local storm report, Apr 30, 7:27 PM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
724 PM CDT WED APR 30 1997

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

0720 PM  |  REIDLAND                  KY   65 MPH TSTM GUST
04/30/97   MCCRACKEN                      REPORTED BY NWS EMPLOYEE

SHANKLIN

Local storm report, Apr 30, 7:35 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
735 PM CDT WED APR 30 1997

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

0728 PM    CALVERT CITY              KY   65 MPH TSTM GUST
04/30/97   MARSHALL                       REPORTED BY DES/RESCUE SQUAD

SHANKLIN

Local storm report, Apr 30, 7:38 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
735 PM CDT WED APR 30 1997

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

0728 PM    CALVERT CITY              KY   65 MPH TSTM GUST
04/30/97   MARSHALL                       REPORTED BY DES/RESCUE SQUAD

SHANKLIN

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 7:02 PM CDT	Severe Thunderstorm Warning	PAH	Posey	43 min
Apr 30, 7:18 PM CDT	Severe Thunderstorm Warning	PAH	Gibson, Pike	42 min
Apr 30, 7:28 PM CDT	Severe Thunderstorm Warning	PAH	Vanderburgh	47 min
Apr 30, 8:05 PM CDT	Severe Thunderstorm Warning	PAH	Spencer	40 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1997 Every severe thunderstorm warning in 1997

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.