Alert archive / Illinois / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 182, NWS Paducah, KY

July 14, 1997Alexander County, Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Jul 14, 1997, 7:06 PM CDT for Alexander County, Illinois. It was in force for 69 min. 2 reports 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
Jul 14, 1997, 7:06 PM CDT (00:06 UTC)
Expired
Jul 14, 1997, 8:15 PM CDT
In force
69 min
Issued by
NWS Paducah, KY
Area
Whole counties

County Alexander County, IL

The radar

The Paducah radar (KPAH), 52 km from the middle of the area, began a volume at 00:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jul 14, 7:49 PM CDTThunderstorm Wind 50Cairo, ILDowned tree limbs blocked some side streets and may have damaged some houses. The wind knocked out power in Cairo for at least 90 minutes. Several restaurant signs were downed.
Jul 14, 7:57 PM CDTHail 0.75Cairo, IL

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 nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.1 hours before the alert went out and 268 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, Little Rock, AR at 00:00Z on 1997-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2658 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, Little Rock, AR at 00:00Z on 1997-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.1939Sfc1 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
2658 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1489 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

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, 5 hours 51 minutes earlier.

Area forecast discussion, Jul 14, 1:15 PM CDT, 5 hours 51 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

Local storm report, Jul 14, 6:49 PM CDT, 17 minutes before
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Local storm report, Jul 14, 6:50 PM CDT, 16 minutes before
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Local storm report, Jul 14, 6:56 PM CDT, 10 minutes before
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Local storm report, Jul 14, 6:57 PM CDT, 9 minutes before
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Local storm report, Jul 14, 7:04 PM CDT, 2 minutes before
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Local storm report, Jul 14, 7:05 PM CDT, 1 minute before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 7:15 PM CDTSevere Thunderstorm WarningPAHUnion, Webster60 min
Jul 14, 7:28 PM CDTSevere Thunderstorm WarningPAHBallard, McCracken77 min
Jul 14, 7:28 PM CDTSevere Thunderstorm WarningPAHLivingston77 min
Jul 14, 7:32 PM CDTSevere Thunderstorm WarningPAHMcLean43 min
Jul 14, 7:52 PM CDTSevere Thunderstorm WarningPAHCaldwell, Hopkins, Lyon83 min
Jul 14, 7:52 PM CDTSevere Thunderstorm WarningPAHGraves, Marshall83 min
Jul 14, 7:52 PM CDTSevere Thunderstorm WarningPAHCarlisle83 min
Jul 14, 8:04 PM CDTSevere Thunderstorm WarningPAHCalloway, Christian, Trigg86 min
Jul 14, 8:04 PM CDTSevere Thunderstorm WarningPAHHickman86 min
Jul 14, 8:34 PM CDTSevere Thunderstorm WarningPAHFulton71 min
Jul 14, 7:28 PM CDTSevere Thunderstorm WarningPAHWayne77 min
Jul 14, 8:04 PM CDTSevere Thunderstorm WarningPAHStoddard86 min
Jul 14, 8:22 PM CDTSevere Thunderstorm WarningPAHRipley53 min
Jul 14, 8:30 PM CDTSevere Thunderstorm WarningPAHButler75 min
Jul 14, 8:30 PM CDTSevere Thunderstorm WarningPAHNew Madrid, Scott75 min
Jul 14, 7:06 PM CDTSevere Thunderstorm WarningPAHMassac, Pulaski69 min
Jul 14, 7:58 PM CDTFlash Flood WarningPAHPope2 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 1997Every 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; radar from the NEXRAD Level II archive.