Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 190, NWS Jacksonville, FL

July 28, 2007Clinch County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 28, 2007, 8:08 PM EDT for Clinch County, Georgia. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 28, 2007, 8:08 PM EDT (00:08 UTC)
Expired: Jul 28, 2007, 8:44 PM EDT
In force: 36 min
Issued by: NWS Jacksonville, FL
Area: Counties, with a storm outline in the text

County Clinch County, GA

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 Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 2:24 PM EDT, 5 hours 44 minutes earlier.

Area forecast discussion, Jul 28, 2:24 PM EDT, 5 hours 44 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
224 PM EDT SAT JUL 28 2007

...SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND EARLY
EVENING...

.SHORT TERM...SEVERE THUNDERSTORM WATCH 599 REMAINS IN EFFECT FOR
SOUTHEAST GEORGIA...NORTHEAST FLORIDA AND THE ADJACENT COASTAL
WATERS. THE COMBINATION OF WARM AND MOIST CONDITIONS...THE
APPROACH OF A VIGOROUS SHORTWAVE TROUGH...AND INTERSECTING
BOUNDARIES WILL SET THE STAGE FOR STRONG TO SEVERE THUNDERSTORMS
THROUGH THE EARLY EVENING. FLY-IN-THE-OINTMENT WILL BE EXTENSIVE
SHOWER/THUNDERSTORM COVERAGE ALREADY IN PLACE (WHICH MAY QUICKLY
STABILIZE THE ATMOSPHERE)...BUT CERTAINLY ANTICIPATE AT LEAST
ISOLATED/PULSE SEVERE STORMS. THE MAIN CONCERNS WILL BE DAMAGING
WINDS...LARGE HAIL AND DANGEROUS LIGHTNING.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TONIGHT AS A
SECONDARY...ALBEIT WEAKER SHORTWAVE TROUGH DIVES SOUTHEAST ACROSS
THE AREA.

SUNDAY AND MONDAY...SERIES OF SHORTWAVE TROUGHS WILL CONTINUE
TO TRAVERSE THE EASTERN THIRD OF THE UNITED STATES. THESE IMPULSES
COUPLED WITH MOIST AND UNSTABLE CONDITIONS WILL RESULT IN SCATTERED
TO NUMEROUS SHOWERS AND THUNDERSTORMS...ESPECIALLY DURING THE
AFTERNOON THROUGH EARLY EVENING HOURS.

TUESDAY...AN ATTENDANT COLD FRONT WILL WILL ATTEMPT TO PUSH INTO
OUR CWA BY TUESDAY...ESPECIALLY OUR GEORGIA ZONES. THUS...HAVE
INCLUDED N-S DISTRIBUTION OF POPS RANGING FROM AROUND 30 PERCENT
IN GEORGIA TO AROUND 60 PERCENT ACROSS OUR SOUTHERN-MOST FL
COUNTIES.

.LONG TERM...WILL MAINTAIN N-S DISTRIBUTION OF POPS WED-THU AS
FRONTAL BOUNDARY IS FORECAST TO LINGER ACROSS NORTH-CENTRAL
FLORIDA...RESULTING IN STRONGER MOISTURE/HIGHER MOISTURE ACROSS
OUR FLORIDA ZONES. BY FRIDAY...FRONTAL BOUNDARY IS FORECAST TO
SLOWLY LIFT NORTH...AND HAVE INCLUDED HOMOGENEOUS CHANCE POPS.

&&

.AVIATION...A CHALLENGING SET OF 18Z TAFS AS IT IS DIFFICULT TO PIN
DOWN THE GREATEST THREAT TIME PERIOD. GIVEN ACTIVITY WAS ONGOING AT
ISSUANCE...WENT WITH AN INITIAL TEMPO GROUP FOR STRONG GUSTY WINDS
THROUGH 22Z. THEREAFTER...THE THINKING IS THAT THE ATMOSPHERE WILL
HAVE STABILIZED ENOUGH TO RESULT IN ONLY SHRA WITH VCTS. THIS IS
CERTAINLY NOT A GIVEN HOWEVER...WITH ADDITIONAL UPPER ENERGY PROGGED
TO MOVE ACROSS THE AREA LATER TONIGHT. FOR NOW...WILL KEEP THE
CONCISE TAF SET IN TACK AND AMEND AS NECESSARY THROUGH THIS EVENING.

&&

.MARINE...ONLY REAL DISAGREEMENT AMONG THE MODELS IS FOR LATE THIS
AFTERNOON AND HOW MUCH OF A SEABREEZE CIRCULATION FORMS. GIVEN
ABUNDANCE OF ACTIVITY ON RADAR...FEEL THE FLOW WILL BE CHAOTIC
ENOUGH TO KEEP A TRUE SEABREEZE FROM FORMING...ALTHOUGH WINDS MAY
BECOME MORE SOUTHWEST THROUGH THE EVENING HOURS. THEREAFTER...IT
BECOMES A RATHER STRAIGHTFORWARD FORECAST WITH SLIGHTLY ENHANCED
WESTERLY FLOW REGIME IN STORE THROUGH EARLY NEXT WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  73  91  73  91 /  40  60  30  60
SSI  76  88  76  87 /  40  60  40  60
JAX  73  91  74  90 /  40  60  50  60
SGJ  75  89  75  88 /  40  60  50  60
GNV  73  90  74  90 /  40  60  50  60
OCF  72  90  73  90 /  40  60  50  60

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GA...NONE.
AM...NONE.
&&

ZAPPE/DEESE/WALKER

Hazardous weather outlook, Jul 28, 8:00 PM EDT, 8 minutes before

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In the hours before

Special weather statement, Jul 28, 6:31 PM EDT, 1 hour 37 minutes before

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Special weather statement, Jul 28, 6:33 PM EDT, 1 hour 35 minutes before

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Special weather statement, Jul 28, 7:35 PM EDT, 33 minutes before

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Special weather statement, Jul 28, 7:38 PM EDT, 30 minutes before

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Local storm report, Jul 28, 7:54 PM EDT, 14 minutes before

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Special weather statement, Jul 28, 8:06 PM EDT, 2 minutes before

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The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 29, 3:23 PM EDT	Special Marine Warning	JAX		97 min
Jul 29, 4:57 PM EDT	Special Marine Warning	JAX		93 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2007 Every severe thunderstorm warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.