Alert archive / Georgia / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 310, NWS Jacksonville, FL

July 22, 2008Charlton County, Georgia; Nassau County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 22, 2008, 3:46 PM EDT for Charlton County, Georgia; Nassau County, Florida. It was in force for 32 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 22, 2008, 3:46 PM EDT (19:46 UTC)
Expired
Jul 22, 2008, 4:18 PM EDT
In force
32 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Nassau County, FL, Charlton County, GA

The radar

The Jacksonville radar (KJAX), 13 km from the middle of the area, began a volume at 19:48 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, 7.8 hours before the alert went out and 11 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-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 2008-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1750 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2008-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1750 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
887 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS52 KJAX 221946
SVRJAX
FLC089-GAC049-222030-
/O.NEW.KJAX.SV.W.0310.080722T1946Z-080722T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
346 PM EDT TUE JUL 22 2008

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CHARLTON COUNTY IN SOUTHEAST GEORGIA
  CENTRAL NASSAU COUNTY IN NORTHEAST FLORIDA

* UNTIL 430 PM EDT

* AT 347 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 10
  MILES WEST OF CALLAHAN...OR 8 MILES SOUTHWEST OF HILLIARD...AND
  MOVING EAST AT 22 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CALLAHAN AND RATLIFF.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS
INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

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

LAT...LON 3057 8166 3057 8172 3047 8183 3052 8203
      3064 8203 3068 8171 3064 8166 3058 8165
TIME...MOT...LOC 1947Z 281DEG 19KT 3059 8197

$$

SHULER
1 follow-up statement
000 
WWUS52 KJAX 222018
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
418 PM EDT TUE JUL 22 2008

FLC089-GAC049-222027-
/O.CAN.KJAX.SV.W.0310.000000T0000Z-080722T2030Z/
CHARLTON GA-NASSAU FL-
417 PM EDT TUE JUL 22 2008

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL NASSAU AND
SOUTHEASTERN CHARLTON COUNTIES IS CANCELLED...

ALTHOUGH THE WARNING IS NO LONGER IN EFFECT...HAIL UP TO ONE HALF
INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR
DAMAGE.

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

LAT...LON 3057 8166 3057 8172 3047 8183 3052 8203
      3064 8203 3068 8171 3064 8166 3058 8165
TIME...MOT...LOC 2017Z 281DEG 19KT 3056 8179

$$

SHULER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 8:04 PM EDTAreal Flood AdvisoryJAXAppling, Wayne56 min
Jul 21, 8:43 PM EDTAreal Flood AdvisoryJAXJeff Davis62 min
Jul 21, 8:54 PM EDTSevere Thunderstorm WarningJAXJeff Davis36 min
Jul 21, 9:09 PM EDTSevere Thunderstorm WarningJAXBacon, Coffee51 min
Jul 21, 9:13 PM EDTAreal Flood AdvisoryJAXAppling, Bacon, Coffee, Jeff Davis62 min
Jul 22, 2:33 PM EDTSevere Thunderstorm WarningJAXCamden27 min
Jul 22, 2:41 PM EDTSevere Thunderstorm WarningJAXClinch, Ware49 min
Jul 22, 3:42 PM EDTSevere Thunderstorm WarningJAXCamden48 min
Jul 22, 3:53 PM EDTSevere Thunderstorm WarningJAXCamden52 min
Jul 22, 6:07 PM EDTSevere Thunderstorm WarningJAXAtkinson, Clinch, Coffee, Ware38 min
Jul 22, 7:15 PM EDTSevere Thunderstorm WarningJAXAppling, Bacon, Coffee, Jeff Davis32 min
Jul 22, 3:32 PM EDTSevere Thunderstorm WarningJAXAlachua22 min
Jul 22, 3:53 PM EDTSpecial Marine WarningJAX97 min
Jul 22, 4:07 PM EDTSevere Thunderstorm WarningJAXDuval, Nassau38 min
Jul 22, 4:31 PM EDTSevere Thunderstorm WarningJAXNassau23 min
Jul 22, 5:01 PM EDTSpecial Marine WarningJAX59 min
Jul 22, 5:08 PM EDTAreal Flood AdvisoryJAXDuval112 min
Jul 22, 5:55 PM EDTSevere Thunderstorm WarningJAXColumbia, Hamilton35 min
Jul 22, 6:07 PM EDTAreal Flood AdvisoryJAXColumbia, Hamilton, Suwannee53 min
Jul 22, 6:12 PM EDTSevere Thunderstorm WarningJAXClay, Saint Johns19 min
Jul 22, 6:27 PM EDTSevere Thunderstorm WarningJAXColumbia, Hamilton, Suwannee48 min
Jul 22, 7:10 PM EDTAreal Flood AdvisoryJAXColumbia, Hamilton, Suwannee95 min
Jul 22, 7:13 PM EDTSevere Thunderstorm WarningJAXSuwannee19 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2008Severe Thunderstorm Warnings in Florida, 2008Every severe thunderstorm warning in 2008

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.