Alert archive / Mississippi / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 58, NWS Mobile, AL

May 18, 1989Pearl River County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at May 18, 1989, 6:43 PM CDT for Pearl River County, Mississippi. It was in force for 32 min.

The area

The counties it named.

The facts

Issued: May 18, 1989, 6:43 PM CDT (23:43 UTC)
Expired: May 18, 1989, 7:15 PM CDT
In force: 32 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Pearl River County, MS

The radar

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.7 hours before the alert went out and 59 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: 1217 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 537 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.8

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.

In the hours before

Special weather statement, May 18, 2:41 PM CDT, 4 hours 2 minutes before

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Local storm report, May 18, 3:09 PM CDT, 3 hours 34 minutes before

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Special weather statement, May 18, 4:20 PM CDT, 2 hours 23 minutes before

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Special weather statement, May 18, 4:22 PM CDT, 2 hours 21 minutes before

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Special weather statement, May 18, 4:33 PM CDT, 2 hours 10 minutes before

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Special weather statement, May 18, 5:41 PM CDT, 1 hour 2 minutes before

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Nearby

Severe Thunderstorm Warnings in Mississippi, 1989 Every severe thunderstorm warning in 1989

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.