Alert archive / Missouri / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 155, NWS Paducah, KY

July 4, 1997Mississippi County, Missouri; Alexander County, Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Jul 4, 1997, 1:46 AM CDT for Mississippi County, Missouri; Alexander County, Illinois. It was in force for 59 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 4, 1997, 1:46 AM CDT (06:46 UTC)
Expired: Jul 4, 1997, 2:45 AM CDT
In force: 59 min
Issued by: NWS Paducah, KY
Area: Whole counties

Counties Alexander County, IL, Mississippi County, MO

What was reported inside it

Time	Report	Where	Remark
Jul 4, 1:55 AM CDT	Thunderstorm Wind 52	Dorena, MO	Two large hickory trees were downed at Big Oak Tree State Park.
Jul 4, 2:00 AM CDT	Thunderstorm Wind 52	Mc Clure, IL	A few trees were blown down.

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, 6.8 hours before the alert went out and 249 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: 2304 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 1493 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.6

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 3, 1:11 PM CDT, 12 hours 35 minutes earlier.

Area forecast discussion, Jul 3, 1:11 PM CDT, 12 hours 35 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
109 PM CDT THU JUL 3 1997

17Z SURFACE CHART SHOWS A STATIONARY FRONT EXTENDS FROM SOUTHEAST
KANSAS ACROSS FAR NORTHERN ARKANSAS TO NEAR MEMPHIS TN. ADAP SFC PLOT
SHOWS THERE MAY BE SOME OUTFLOW FROM CONVECTION IN MISSOURI...HEADED
FOR THE OZARKS. VISIBLE LOOP SHOWS CLOUDS INCREASING OVER SOUTHERN
MISSOURI...AND NORTHERN SECTIONS OF SOUTHERN ILLLINOIS. ISSUES WILL
BE CLOUD TRENDS AND CHC FOR THUNDERSTORMS THROUGH EARLY FRIDAY.

HAVE BASED TONIGHT AND FRIDAY SUGGESTIONS ON NGM/RUC. RUC MODEL DATA
SHOWS MOISTURE WILL CONTINUE TO INCREASE AROUND 800MB INTO THE EARLY
EVENING HOURS. THIS FOLLOWS SATELLITE TRENDS. A SHORTWAVE SHOWS UP
OVER THE SOUTH HIGH PLAINS. THE NGM MOVES THIS FEATURE INTO ARKANSAS
BY FRIDAY MORNING...WITH ASSOC SFC LOW PRESSURE INTO WESTERN KENTUCKY.
SFC MFLUX CONV AND INCREASING H8/H5 UVVS IN RESPONSE TO THE S/WV MEANS
THUNDERSTORMS SHOULD GET GOING BY MIDNIGHT IN SE MO...AND SPREAD EAST
OVER THE FA THROUGH THE NIGHT. MODEL FORECASTS PRECIP WATER VALUES
1.6-1.8 INCHES...SO LOCALLY HEAVY RAIN IS POSSIBLE. FWC/FAN NOS ARE IN
ARE SOMEWHAT OFF...AND WILL SPLIT THE DIFFERENCE.

FOR FRIDAY...THE AXIS OF THE TROF AT H7/H5 SHIFTS EAST BY EVENING.
REGION OF PVA/+UVVS SHIFT TO THE FAR EAST SECTION OF THE FA BY THIS
TIME. SHOULD SEE AN END TO THE CONVECTION IN THE MORNING IN SE MO AND
PTNS OF SRN IL...AND ENDING BY EARLY AFTERNOON IN WRN KY. SW IN AND
THhE HOP/NW KY AREA MAY HAVE A CHANCE UNTIL LATE AFTERNOON. WILL FOLLOW
NOS WHICH ARE IN BETTER AGREEMENT FOR MAXS FRIDAY.

NOLES

In the hours before

Special weather statement, Jul 4, 1:25 AM CDT, 21 minutes before

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Local storm report, Jul 4, 1:28 AM CDT, 18 minutes before

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Special weather statement, Jul 4, 1:28 AM CDT, 18 minutes before

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Local storm report, Jul 4, 1:30 AM CDT, 16 minutes before

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Local storm report, Jul 4, 1:40 AM CDT, 6 minutes before

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Local storm report, Jul 4, 1:44 AM CDT, 2 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 4, 2:09 AM CDT	Severe Thunderstorm Warning	PAH	Ballard, Carlisle	66 min
Jul 4, 3:15 AM CDT	Severe Thunderstorm Warning	PAH	Calloway, Marshall	45 min
Jul 4, 3:29 AM CDT	Severe Thunderstorm Warning	PAH	Trigg	61 min
Jul 4, 4:02 AM CDT	Severe Thunderstorm Warning	PAH	Christian	58 min
Jul 3, 9:07 PM CDT	Severe Thunderstorm Warning	PAH	Carter	53 min
Jul 3, 10:01 PM CDT	Severe Thunderstorm Warning	PAH	Carter	44 min
Jul 3, 10:14 PM CDT	Severe Thunderstorm Warning	PAH	Butler, Wayne	76 min
Jul 3, 10:46 PM CDT	Tornado Warning	PAH	Butler	44 min
Jul 3, 11:02 PM CDT	Severe Thunderstorm Warning	PAH	Stoddard	73 min
Jul 4, 12:19 AM CDT	Severe Thunderstorm Warning	PAH	Wayne	56 min
Jul 4, 12:46 AM CDT	Severe Thunderstorm Warning	PAH	Bollinger	59 min
Jul 4, 1:09 AM CDT	Severe Thunderstorm Warning	PAH	Cape Girardeau, Scott, Stoddard	81 min
Jul 4, 2:19 AM CDT	Severe Thunderstorm Warning	PAH	New Madrid	56 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1997 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.