Alert archive / Illinois / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 55, NWS Paducah, KY

June 20, 2001Franklin County, Hamilton County, Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Jun 20, 2001, 1:39 AM CDT for Franklin County, Hamilton County, Illinois. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 20, 2001, 1:39 AM CDT (06:39 UTC)
Expired: Jun 20, 2001, 2:15 AM CDT
In force: 36 min
Issued by: NWS Paducah, KY
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Franklin County, IL, Hamilton County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.7 hours before the alert went out and 235 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: 225 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 1405 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Jun 20, 1:20 AM CDT, 19 minutes earlier.

Area forecast discussion, Jun 20, 1:20 AM CDT, 19 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
120 AM CDT WED JUN 20 2001

KPAH 88D STILL ACTIVE WITH WIDELY SCATTERED CONVECTION FROM NEAR
PADUCAH TO JUST NORTH OF THE KY LAKES. ANOTHER AREA OF CONVECTION
WAS CONCENTRATED AROUND MOUNT VERNON IL. AIRMASS STILL RATHER
UNSTABLE...AND CONVECTION FORMING ALONG PREVIOUSLY CREATED
BOUNDARIES...AND IN AN 850MB THETA-E RIDGE ACROSS THE HEART OF THE
FA. THIS CONVECTION HAS PERSISTED SINCE WHAT FORMED EARLY YESTERDAY
AFTERNOON...AND DON'T SEE ANY REAL REASON FOR A CHANGE TO WHAT IS
GOING ON FOR THE REST OF THE EARLY MORNING.

HAVE PLACED MY FAITH IN THE AVN AND NGM...AS THEY HAVE BEEN MORE
CONSISTENT IN ADVERTISING CURRENT CONVECTION...AND FRONTAL
POSITIONING AND QPF TODAY THROUGH THURSDAY. ETA APPEARED TO BE TOO
FAST...AND MORE OPTIMISTIC ON CONVECTION NOT DEVELOPING...ESPECIALLY
YESTERDAY AFTERNOON.

FOR TODAY...WILL GO WITH SCATTERED SHOWER AND THUNDERSTORM WORDING
AS THE COLD FRONT...CURRENTLY FROM SW INDIANA INTO SE MISSOURI
SLIDES SOUTH AND EAST...TO A POSITION SOUTH OF THE CWFA LATER TODAY.
WILL ALSO CONTINUE WITH PESSIMISTIC CLOUD FORECAST...AND KEEP THE
WINDS VARIABLE IN DIRECTION...DUE TO CONVECTIVE INFLUENCE...AND THE
FRONT MOVING THROUGH.

TONIGHT LOOKS ABOUT THE SAME. WILL GO LIKELY POPS AS CONVECTION IS
FORECAST TO DEVELOP ACROSS THE FA BEHIND THE FRONT. THIS WILL BE IN
A REGION OF DEEPER MOISTURE...AND GOOD 1000-850MB FRONTOGENETICAL
FORCING AND BAROCLINICITY. LI'S PROGGED -1 TO -4...SO THUNDER STILL
APPEARS REASONABLE.

TRY TO AVOID A FLIP FLOP...BUT ALL 3 MODELS SUGGEST THAT MID TROP
FORCING AND BEST MOISTURE WILL NOT BE EAST AND SOUTH OF THE FA UNTIL
MIDDAY THURSDAY NORTH SECTIONS...AND LATE AFTERNOON SOUTH AT THE
EARLIEST. SO WILL HAVE TO ADD BACK THE CHANCE FOR CONVECTION TO
THE FORECAST FOR THURSDAY...ALL DAY SOUTH...AND UNTIL EARLY
AFTERNOON NORTH. AVN AND ETA ALSO DROP A VORT SOUTHEAST AS THE
TROF DIGS IN OVER THE EASTERN U.S. FRIDAY MORNING. AVN IS A BIT MORE
AGGRESSIVE WITH THIS FEATURE. A RIBBON OF MOISTURE IS FORECAST TO
DROP SOUTHEAST ACROSS MAINLY SOUTHERN ILLINOIS AND SOUTHWEST INDIANA
INTO NORTHWESTERN KENTUCKY UNTIL MIDDAY. WILL NOT GET CARRIED
AWAY...BUT WILL ADD MORE CLOUDS TO THE FORECAST FOR THURSDAY NIGHT
AND FRIDAY FOR THE CWFA. MAINLY PARTLY CLOUDY. NO CHANGES BEYOND
FRIDAY.

USED A BLEND OF GUIDANCE AND PREVIOUS ZFP NUMBE&RS.

.PAH...NONE.

NOLES

In the hours before

Special weather statement, Jun 19, 7:47 PM CDT, 5 hours 52 minutes before

INZ081-082-085>088-KYZ018-019-200200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
747 PM CDT TUE JUN 19 2001

...THUNDERSTORMS IN AND AROUND THE EVANSVILLE METRO AREA...

AT 745 PM...PADUCAH RADAR SHOWED SCATTERED THUNDERSTORMS JUST NORTH
AND WEST OF EVANSVILLE INDIANA...ESPECIALLY FROM NEAR POSEYVILLE TO
AROUND DARMSTADT. THE STORMS WERE MOVING SLOWLY NORTHEAST.

YOU CAN EXPECT LOCALLY HEAVY RAIN TO BE THE MAIN THREAT WITH THESE
STORMS AS THEY AFFECT COMMUNITIES MAINLY NORTH OF EVANSVILLE...FROM
PRINCETON TO OAKLAND CITY AND ELBERFIELD...BY 900 PM. HOWEVER...AN
ISOLATED STRONGER STORM COULD PRODUCE WIND GUSTS TO 40 MPH OR
POSSIBLY EVEN SOME SMALL HAIL.

DH

Special weather statement, Jun 19, 8:39 PM CDT, 5 hours before

INZ081-082-085>088-KYZ018-019-200230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
839 PM CDT TUE JUN 19 2001

...THUNDERSTORMS MAINLY NORTH OF THE EVANSVILLE METRO AREA...

AT 835 PM...PADUCAH RADAR SHOWED SCATTERED THUNDERSTORMS MAINLY NORTH
OF EVANSVILLE INDIANA...ESPECIALLY FROM AROUND PETERSBURG AND
WINSLOW...EXTENDING SOUTH AND WEST THROUGH FRANCIS TO NEAR
DARMSTADT. THE STORMS CONTINUE TO MOVE SLOWLY NORTHEAST.

YOU CAN EXPECT LOCALLY HEAVY RAIN TO BE THE MAIN THREAT WITH THESE
STORMS AS THEY AFFECT COMMUNITIES FROM PETERSBURG AND WINSLOW...TO
OAKLAND CITY...SOMERVILLE...AND MACKEY...BY 930 PM. HOWEVER...AN
ISOLATED STRONGER STORM COULD PRODUCE WIND GUSTS TO 40 MPH OR HAIL
1/4 TO 1/2 INCH IN SIZE.

SEVERAL REPORTS OF 1/4 TO 1/2 INCH SIZED HAIL IN PIKE COUNTY WITHIN
LAST HOUR

DH

Special weather statement, Jun 19, 9:00 PM CDT, 4 hours 39 minutes before

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Local storm report, Jun 19, 9:11 PM CDT, 4 hours 28 minutes before

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Special weather statement, Jun 19, 10:40 PM CDT, 2 hours 59 minutes before

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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 1:29 PM CDT	Severe Thunderstorm Warning	PAH	Pope	31 min
Jun 20, 1:47 PM CDT	Severe Thunderstorm Warning	PAH	Hardin	28 min
Jun 20, 6:52 PM CDT	Severe Thunderstorm Warning	PAH	Jackson	38 min
Jun 20, 6:16 PM CDT	Severe Thunderstorm Warning	PAH	Perry	44 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2001 Every 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; the sounding from the Mesonet's radiosonde archive.