Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 188, NWS Jackson, MS

July 23, 1990Clarke County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jul 23, 1990, 6:24 PM CDT for Clarke County, Mississippi. It was in force for 51 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 23, 1990, 6:24 PM CDT (23:24 UTC)
Expired: Jul 23, 1990, 7:15 PM CDT
In force: 51 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Clarke County, MS

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Jul 23, 6:35 PM CDT	Thunderstorm Wind 0	Clarke, MS
Jul 23, 7:25 PM CDT	Thunderstorm Wind 0	Clarke, MS

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 11.4 hours before the alert went out and 169 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: 1365 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 824 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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.

In the hours before

Special weather statement, Jul 23, 1:08 PM CDT, 5 hours 16 minutes before

MSZALL-231845-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
105 PM CDT MON JUL 23 1990

THUNDERSTORMS CONTINUE OVER CENTRAL MISSISSIPPI.

AT 100 PM CDT SCATTERED STRONG THUNDERSTORMS CONTINUED OVER CENTRAL
MISSISSIPPI. THE STRONGER STORMS WERE LOCATED OVER SHARKEY...HUMPHREYS
...LEAKE...SCOTT AND KEMPER COUNTIES.

THESE STORMS ARE CAPABLE OF PRODUCING WIND GUSTS OVER 40 MILES AN HOUR
...BRIEF HEAVY RAIN...FREQU[ENT LIGHTNING AND POSSIBLE HAIL AS THEY MOVE
TO THE NORTHEAST AT 25 MILES AN HOUR.

OTHER THUNDERSTORMS WERE SCATTERD ACROSS CENTRAL MISSISSIPPI...THE
MISSISSIPPI DELTA AND SOUTHWEST MISSISSIPPI.

Special weather statement, Jul 23, 1:34 PM CDT, 4 hours 50 minutes before

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Special weather statement, Jul 23, 3:48 PM CDT, 2 hours 36 minutes before

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Special weather statement, Jul 23, 5:07 PM CDT, 1 hour 17 minutes before

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Special weather statement, Jul 23, 5:53 PM CDT, 31 minutes before

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The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 22, 8:24 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Montgomery	36 min
Jul 23, 11:44 AM CDT	Severe Thunderstorm Warning	JAN	Madison, Yazoo	46 min
Jul 23, 12:52 PM CDT	Severe Thunderstorm Warning	JAN	Kemper	38 min
Jul 23, 3:55 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	35 min
Jul 23, 5:10 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Warren	35 min
Jul 23, 5:46 PM CDT	Severe Thunderstorm Warning	JAN	Hinds	29 min
Jul 23, 6:01 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	44 min
Jul 23, 1:10 PM CDT	Severe Thunderstorm Warning	JAN	Sumter	35 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1990 Every severe thunderstorm warning in 1990

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.