Alert archive / Georgia / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 107, NWS Atlanta, GA

June 18, 1989Polk County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 18, 1989, 9:13 PM EDT for Polk County, Georgia. It was in force for 47 min.

The area

The counties it named.

The facts

Issued: Jun 18, 1989, 9:13 PM EDT (01:13 UTC)
Expired: Jun 18, 1989, 10:00 PM EDT
In force: 47 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Polk County, GA

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

Centreville/Bibb, AL (KCKL), launched 00:00Z, 1.2 hours before the alert went out and 223 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: 3006 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 928 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.1

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, Jun 18, 3:29 PM EDT, 5 hours 44 minutes before

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Special weather statement, Jun 18, 6:10 PM EDT, 3 hours 3 minutes before

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Special weather statement, Jun 18, 7:35 PM EDT, 1 hour 38 minutes before

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Special weather statement, Jun 18, 7:38 PM EDT, 1 hour 35 minutes before

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Special weather statement, Jun 18, 8:39 PM EDT, 34 minutes before

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Special weather statement, Jun 18, 8:52 PM EDT, 21 minutes before

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The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 19, 12:42 PM EDT	Severe Thunderstorm Warning	FFC	Taliaferro	63 min
Jun 19, 1:43 PM EDT	Severe Thunderstorm Warning	FFC	Columbia	47 min
Jun 19, 3:29 PM EDT	Severe Thunderstorm Warning	FFC	Houston	61 min
Jun 19, 3:58 PM EDT	Severe Thunderstorm Warning	FFC	Twiggs	47 min

Nearby

Severe Thunderstorm Warnings in Georgia, 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.