Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Jacksonville, FL

July 12, 2021Clinch County, Georgia

NWS Jacksonville, FL issued this special weather statement at Jul 12, 2021, 7:30 PM EDT for Clinch County, Georgia. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 12, 2021, 7:30 PM EDT (23:30 UTC)
Expired: Jul 12, 2021, 8:15 PM EDT
In force: 45 min
Issued by: NWS Jacksonville, FL

County Clinch County, GA

The radar

The Moody AFB radar (KVAX), 33 km from the middle of the area, began a volume at 23:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 11.5 hours before the alert went out and 106 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: 1794 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 846 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 12, 3:55 PM EDT, 3 hours 35 minutes earlier.

Area forecast discussion, Jul 12, 3:55 PM EDT, 3 hours 35 minutes before

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In the hours before

Special weather statement, Jul 12, 4:50 PM EDT, 2 hours 40 minutes before

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Local storm report, Jul 12, 5:36 PM EDT, 1 hour 54 minutes before

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Special weather statement, Jul 12, 6:01 PM EDT, 1 hour 29 minutes before

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Special weather statement, Jul 12, 6:31 PM EDT, 59 minutes before

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Special weather statement, Jul 12, 7:15 PM EDT, 15 minutes before

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Special weather statement, Jul 12, 7:30 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
730 PM EDT Mon Jul 12 2021

GAZ163-250-350-130015-
Clinch GA-Northern Ware GA-Southern Ware GA-
730 PM EDT Mon Jul 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL WARE AND CENTRAL
CLINCH COUNTIES UNTIL 815 PM EDT...

* At 730 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm 7 miles southeast of Argyle, moving
  north at 25 mph.

* Small hail and winds in excess of 45 mph possible with this storm.

* Locations impacted include...
  Argyle and Manor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

Torrential rainfall is occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm. If
you can hear thunder, you are close enough to be struck! Seek a safe
shelter inside a building or vehicle.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Jacksonville on
Facebook and Twitter.

&&

LAT...LON 3093 8270 3122 8267 3125 8254 3082 8251
      3076 8277 3083 8278
TIME...MOT...LOC 2330Z 177DEG 20KT 3099 8258

CORLESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 9:45 AM EDT	River Flood Warning	JAX	Gilchrist, Suwannee	49 hr
Jul 12, 12:13 PM EDT	Special Weather Statement	JAX	Flagler	32 min
Jul 12, 12:43 PM EDT	Special Weather Statement	JAX	Flagler	47 min
Jul 12, 12:50 PM EDT	Special Weather Statement	JAX	Saint Johns	40 min
Jul 12, 1:08 PM EDT	Severe Thunderstorm Warning	JAX	Flagler, Marion, Putnam	37 min
Jul 12, 1:26 PM EDT	Special Weather Statement	JAX	Saint Johns	34 min
Jul 12, 1:42 PM EDT	Special Weather Statement	JAX	Marion	48 min
Jul 12, 1:45 PM EDT	Special Weather Statement	JAX	Suwannee	30 min
Jul 12, 2:33 PM EDT	Special Weather Statement	JAX	Marion	42 min
Jul 12, 2:47 PM EDT	Special Weather Statement	JAX	Duval	28 min
Jul 12, 3:13 PM EDT	Special Weather Statement	JAX	Marion	47 min
Jul 12, 3:14 PM EDT	Special Weather Statement	JAX	Nassau	46 min
Jul 12, 6:01 PM EDT	Special Weather Statement	JAX	Suwannee	29 min
Jul 12, 6:31 PM EDT	Special Weather Statement	JAX	Suwannee	44 min
Jul 12, 7:15 PM EDT	Special Weather Statement	JAX	Hamilton	45 min
Jul 12, 4:50 PM EDT	Special Weather Statement	JAX	Lanier	25 min
Jul 12, 7:42 PM EDT	Special Weather Statement	JAX	Bacon	48 min

Nearby

Special Weather Statements in Georgia, 2021 Every special weather statement in 2021

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; radar from the NEXRAD Level II archive.