Alert archive / Illinois / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 166, NWS Paducah, KY

July 14, 1997Jefferson County, Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Jul 14, 1997, 4:49 PM CDT for Jefferson County, Illinois. It was in force for 56 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: Jul 14, 1997, 4:49 PM CDT (21:49 UTC)
Expired: Jul 14, 1997, 5:45 PM CDT
In force: 56 min
Issued by: NWS Paducah, KY
Area: Whole counties

County Jefferson County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.8 hours before the alert went out and 207 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: 3436 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 14, 1:15 PM CDT, 3 hours 34 minutes earlier.

Area forecast discussion, Jul 14, 1:15 PM CDT, 3 hours 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
115 PM CDT MON JUL 14 1997

EARLY DAY CONVECTION AND WARM MID LEVEL TEMPS HAS PERHAPS PUT BRIEF HOLD
ON TSM DEVELOPMENT TIL LATER IN THE AFTERNOON. LATE MORNING SURFACE
ANALYSIS SHOWS COLD FRONT HAS MADE GOOD PROGRESS ON NRN END IN GREAT
LAKES...BUT LITTLE/NO PROGRESS ON SRN PTN IN WRN MO. SOUPY AIR OUT
AHEAD OF FRONT EXHIBITED BY DEW POINTS POOLING IN MID 70S. ADAP SFC
LIS ALREADY DESTABILIZED TO BETTER THAN MINUS 10 ACROSS ENTIRE PAH FA.

NEW MODELS CONT TO DRAG FRONT THROUGH FA TONIGHT DESPITE HINTS AT SRN
PTN BECOMING MORE W-E ORIENTED. WITH HIGH INSTABILITY AND PLENTIFUL LOW
LEVEL MOISTURE...LIKE GOING CHC CATEGORY POPS IN FCST WITH APPROACHING
FRONT.

SLIGHTLY COOLER/DRIER AIR FILTERING IN BEHIND FRONT TOMORROW WITH UPPER
TROF MOVING EAST OF FA SHOULD LEAD TO DRY FCST...IE RECOMMEND NO
MENTION OF POP FOR TUE PER FWC.

DH

In the hours before

Special weather statement, Jul 14, 11:23 AM CDT, 5 hours 26 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 6:41 PM CDT	Severe Thunderstorm Warning	PAH	Daviess, Henderson	64 min
Jul 14, 5:50 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger, Cape Girardeau, Perry	70 min
Jul 14, 6:22 PM CDT	Tornado Warning	PAH	Cape Girardeau	38 min
Jul 14, 6:55 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger	65 min
Jul 14, 4:24 PM CDT	Severe Thunderstorm Warning	PAH	Wayne	66 min
Jul 14, 5:22 PM CDT	Severe Thunderstorm Warning	PAH	Franklin, Hamilton	68 min
Jul 14, 5:34 PM CDT	Severe Thunderstorm Warning	PAH	Edwards, Wayne	71 min
Jul 14, 5:38 PM CDT	Severe Thunderstorm Warning	PAH	Jackson, Perry	67 min
Jul 14, 5:46 PM CDT	Severe Thunderstorm Warning	PAH	Wabash	74 min
Jul 14, 5:53 PM CDT	Severe Thunderstorm Warning	PAH	Williamson	67 min
Jul 14, 6:15 PM CDT	Severe Thunderstorm Warning	PAH	Union	75 min
Jul 14, 6:15 PM CDT	Severe Thunderstorm Warning	PAH	Saline	75 min
Jul 14, 6:39 PM CDT	Severe Thunderstorm Warning	PAH	Johnson	66 min
Jul 14, 6:55 PM CDT	Severe Thunderstorm Warning	PAH	Pope	65 min

Nearby

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