Alert archive / Georgia / Areal Flood Warnings in 2013

Areal Flood Warning 21, NWS Jacksonville, FL

August 16, 2013Appling County, Georgia

NWS Jacksonville, FL issued this areal flood warning at Aug 16, 2013, 7:10 PM EDT for Appling County, Georgia. It was in force for 110 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: Aug 16, 2013, 7:10 PM EDT (23:10 UTC)
Expired: Aug 16, 2013, 9:00 PM EDT
In force: 110 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Flood severity: None

County Appling County, GA

The radar

The Moody AFB radar (KVAX), 117 km from the middle of the area, began a volume at 23:13 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.2 hours before the alert went out and 243 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: 1385 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 667 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood 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 areal flood warning went out at Aug 16, 2:35 PM EDT, 4 hours 35 minutes earlier.

Area forecast discussion, Aug 16, 2:35 PM EDT, 4 hours 35 minutes before

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Hazardous weather outlook, Aug 16, 12:00 PM EDT, 7 hours 10 minutes before

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In the hours before

Special weather statement, Aug 16, 5:11 PM EDT, 1 hour 59 minutes before

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Special weather statement, Aug 16, 5:16 PM EDT, 1 hour 54 minutes before

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Local storm report, Aug 16, 5:27 PM EDT, 1 hour 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
527 PM EDT FRI AUG 16 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0523 PM     TSTM WND GST     1 N JACKSONVILLE BEACH  30.29N 81.39W
08/16/2013  M42 MPH          AMZ452             FL   MESONET

            THE WEATHERFLOW SENSOR AT THE JACKSONVILLE BEACH PIER
            MEASURED A GUST TO 42 MPH FROM THE SOUTH-SOUTHWEST.

&&

ARS

Special weather statement, Aug 16, 5:46 PM EDT, 1 hour 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
546 PM EDT FRI AUG 16 2013

FLZ024-025-GAZ166-162230-
COASTAL CAMDEN-DUVAL-NASSAU-
546 PM EDT FRI AUG 16 2013

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHEASTERN
CAMDEN...NORTHEASTERN DUVAL AND EASTERN NASSAU COUNTIES FOR STRONG
WINDS AND FUNNEL CLOUDS VALID UNTIL 630 PM EDT...

AT 546 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 6 MILES NORTHWEST
OF YULEE TO 5 MILES SOUTHWEST OF AMELIA CITY TO 7 MILES WEST OF
TALBOT ISLAND...MOVING NORTHEAST AT 30 MPH. THESE STRONG
THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND YULEE...LITTLE TALBOT
ISLAND...TALBOT ISLAND...ST. MARYS...AMELIA CITY...FERNANDINA
BEACH...KINGS BAY BASE AND DUNGENESS THROUGH 630 PM EDT. GUSTY WINDS
OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.
DOPPLER RADAR HAS INDICATED WEAK ROTATION WITHIN THIS STORM.
TORNADOES MAY DEVELOP WITH LITTLE OR NO ADVANCE WARNING. HEAVY
RAINFALL WILL PRODUCE PONDING OF WATER ON ROADWAYS AND MINOR FLOODING
OF LOW-LYING AREAS.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 3044 8156 3056 8156 3067 8168 3083 8155
      3081 8144 3075 8145 3072 8144 3070 8142
      3060 8144 3052 8142 3051 8144 3049 8141
      3045 8141
TIME...MOT...LOC 2146Z 206DEG 28KT 3070 8164 3058 8152
          3049 8152

ENYEDI

Special weather statement, Aug 16, 6:04 PM EDT, 1 hour 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
604 PM EDT FRI AUG 16 2013

GAZ154-166-162245-
COASTAL CAMDEN-COASTAL GLYNN-
604 PM EDT FRI AUG 16 2013

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN CAMDEN
AND SOUTHERN GLYNN COUNTIES FOR STRONG WINDS AND FUNNEL CLOUDS VALID
UNTIL 645 PM EDT...

AT 605 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 6 MILES WEST OF
KINGS BAY BASE TO 5 MILES SOUTHEAST OF KINGS BAY BASE TO 13 MILES
SOUTHEAST OF KINGS BAY BASE...MOVING NORTH AT 25 MPH. THESE STRONG
THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND KINGS BAY BASE...
HARRIETTS BLUFF...CUMBERLAND ISLAND...HIGH POINT...JEKYLL ISLAND AND
DOVER BLUFF THROUGH 645 PM EDT. GUSTY WINDS OF 45 TO 55 MPH CAN BE
EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. DOPPLER RADAR HAS
INDICATED WEAK ROTATION WITHIN THIS STORM. TORNADOES MAY DEVELOP WITH
LITTLE OR NO ADVANCE WARNING. HEAVY RAINFALL WILL PRODUCE PONDING OF
WATER ON ROADWAYS AND MINOR FLOODING OF LOW-LYING AREAS.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 3103 8141 3100 8140 3101 8145 3098 8147
      3096 8144 3098 8142 3098 8141 3090 8140
      3075 8146 3075 8165 3115 8157 3112 8139
      3108 8139
TIME...MOT...LOC 2205Z 202DEG 20KT 3079 8160 3075 8145
          3064 8140

ENYEDI

Special weather statement, Aug 16, 6:31 PM EDT, 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
631 PM EDT FRI AUG 16 2013

GAZ136-151>153-162330-
BRANTLEY-INLAND GLYNN-PIERCE-WAYNE-
631 PM EDT FRI AUG 16 2013

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHEASTERN
WAYNE...SOUTHEASTERN PIERCE...NORTHERN BRANTLEY AND NORTHWESTERN
GLYNN COUNTIES FOR STRONG WINDS AND FUNNEL CLOUDS VALID UNTIL 730 PM
EDT...

AT 631 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 8 MILES NORTH OF
WAYNESVILLE TO 3 MILES NORTHWEST OF HOBOKEN...MOVING NORTHEAST AT 20
MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND
HORTENSE...HOBOKEN...NAHUNTA...MOUNT PLEASANT...RAYBON...ATKINSON...
WAYNESVILLE...THALMANN AND EVERETT THROUGH 730 PM EDT. GUSTY WINDS OF
45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.
DOPPLER RADAR HAS INDICATED WEAK ROTATION WITHIN THIS STORM.
TORNADOES MAY DEVELOP WITH LITTLE OR NO ADVANCE WARNING. HEAVY
RAINFALL WILL PRODUCE PONDING OF WATER ON ROADWAYS AND MINOR FLOODING
OF LOW-LYING AREAS.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 3131 8150 3111 8214 3125 8224 3155 8166
      3153 8165 3151 8165 3148 8161 3145 8162
      3142 8160 3134 8149
TIME...MOT...LOC 2231Z 246DEG 18KT 3134 8181 3120 8216

ENYEDI

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 8:27 PM EDT	Special Weather Statement	JAX	Flagler, Saint Johns	33 min
Aug 16, 3:47 AM EDT	Flash Flood Watch	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	38 hr
Aug 16, 3:16 PM EDT	Special Weather Statement	JAX	Flagler	29 min
Aug 16, 4:51 PM EDT	Special Weather Statement	JAX	Duval	39 min
Aug 16, 4:52 PM EDT	Special Marine Warning	JAX		2 hr
Aug 16, 5:16 PM EDT	Special Weather Statement	JAX	Duval	29 min
Aug 16, 5:32 PM EDT	Special Marine Warning	JAX		118 min
Aug 16, 5:46 PM EDT	Special Weather Statement	JAX	Nassau	44 min
Aug 16, 5:58 PM EDT	Special Marine Warning	JAX		2 hr
Aug 16, 7:02 PM EDT	Special Marine Warning	JAX		58 min
Aug 16, 2:47 PM EDT	Special Weather Statement	JAX	Jeff Davis	43 min
Aug 16, 3:51 PM EDT	Special Weather Statement	JAX	Coffee	39 min
Aug 16, 4:19 PM EDT	Special Weather Statement	JAX	Appling, Bacon	41 min
Aug 16, 4:33 PM EDT	Areal Flood Advisory	JAX	Appling, Bacon, Coffee, Wayne	87 min
Aug 16, 4:38 PM EDT	Special Weather Statement	JAX	Wayne	52 min
Aug 16, 5:11 PM EDT	Special Weather Statement	JAX	Bacon	34 min
Aug 16, 5:55 PM EDT	Areal Flood Advisory	JAX	Appling, Bacon, Pierce, Ware, Wayne	2 hr
Aug 16, 6:04 PM EDT	Special Weather Statement	JAX	Camden	41 min
Aug 16, 6:31 PM EDT	Special Weather Statement	JAX	Brantley	59 min
Aug 16, 6:53 PM EDT	Areal Flood Advisory	JAX	Brantley, Glynn, Pierce, Wayne	112 min
Aug 16, 7:11 PM EDT	Special Weather Statement	JAX	Glynn	34 min
Aug 16, 7:26 PM EDT	Special Weather Statement	JAX	Glynn	49 min

Nearby

Areal Flood Warnings in Georgia, 2013 Every areal flood warning in 2013

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.