Alert archive / Florida / Tornado Warnings in 2022

Tornado Warning 21, NWS Jacksonville, FL

August 31, 2022Duval County, Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Aug 31, 2022, 3:17 PM EDT for Duval County, Saint Johns County, Florida. It was in force for 13 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 31, 2022, 3:17 PM EDT (19:17 UTC)
Expired
Aug 31, 2022, 3:30 PM EDT
In force
13 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Duval County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 40 km from the middle of the area, began a volume at 19:20 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.

What was reported inside it

TimeReportWhereRemark
Aug 31, 3:30 PM EDTTSTM WND DMG1 Nnw Ponte Vedra Beach, FLTREE REPORTED DOWN OVER ROAD IN THE VICINITY OF PONTE VEDRA LAKES BLVD & GREAT HARBOR WAY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 7.3 hours before the alert went out and 41 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 2022-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2419 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2022-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
2419 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
599 m above ground
0-6 km bulk shear
2 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.

045 
WFUS52 KJAX 311917
TORJAX
FLC031-109-311945-
/O.NEW.KJAX.TO.W.0021.220831T1917Z-220831T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
317 PM EDT Wed Aug 31 2022

The National Weather Service in Jacksonville has issued a

* Tornado Warning for...
  Northern St. Johns County in northeastern Florida...
  Southeastern Duval County in northeastern Florida...

* Until 345 PM EDT.
    
* At 317 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over San Pablo, or over Ponte Vedra Beach, moving east
  at 10 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Ponte Vedra Beach around 335 PM EDT.
  Sawgrass and Palm Valley around 345 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

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

&&

LAT...LON 3019 8152 3037 8147 3036 8136 3025 8135
      3014 8132 3011 8131
TIME...MOT...LOC 1917Z 283DEG 7KT 3027 8142 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

HESS
1 follow-up statement
878 
WWUS52 KJAX 311930
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
330 PM EDT Wed Aug 31 2022

FLC031-109-311940-
/O.CAN.KJAX.TO.W.0021.000000T0000Z-220831T1945Z/
St. Johns FL-Duval FL-
330 PM EDT Wed Aug 31 2022

...THE TORNADO WARNING FOR NORTHERN ST. JOHNS AND SOUTHEASTERN DUVAL
COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

LAT...LON 3019 8152 3037 8147 3036 8136 3025 8135
      3014 8132 3011 8131
TIME...MOT...LOC 1930Z 283DEG 7KT 3026 8139 

$$

HESS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 8:32 PM EDTSpecial Weather StatementJAXDuval43 min
Aug 31, 1:53 PM EDTSpecial Weather StatementJAXNassau37 min
Aug 31, 1:56 PM EDTSpecial Weather StatementJAXSuwannee34 min
Aug 31, 2:07 PM EDTSpecial Weather StatementJAXPutnam38 min
Aug 31, 2:15 PM EDTSpecial Weather StatementJAXDuval45 min
Aug 31, 2:22 PM EDTSpecial Weather StatementJAXSaint Johns38 min
Aug 31, 2:30 PM EDTSpecial Marine WarningJAX60 min
Aug 31, 2:31 PM EDTSevere Thunderstorm WarningJAXDuval29 min
Aug 31, 2:35 PM EDTSpecial Weather StatementJAXClay40 min
Aug 31, 2:36 PM EDTSpecial Marine WarningJAX54 min
Aug 31, 2:39 PM EDTSpecial Marine WarningJAX66 min
Aug 31, 2:45 PM EDTSpecial Weather StatementJAXBradford30 min
Aug 31, 2:55 PM EDTSpecial Weather StatementJAXDuval35 min
Aug 31, 3:02 PM EDTSpecial Weather StatementJAXSaint Johns28 min
Aug 31, 3:04 PM EDTSevere Thunderstorm WarningJAXDuval, Saint Johns26 min
Aug 31, 3:09 PM EDTSpecial Marine WarningJAX66 min
Aug 31, 3:20 PM EDTSpecial Weather StatementJAXClay40 min
Aug 31, 3:25 PM EDTAreal Flood WarningJAXDuval, Saint Johns95 min
Aug 31, 3:32 PM EDTSpecial Marine WarningJAX58 min
Aug 31, 3:42 PM EDTSpecial Weather StatementJAXNassau33 min
Aug 31, 3:43 PM EDTSpecial Weather StatementJAXFlagler32 min
Aug 31, 3:47 PM EDTSpecial Marine WarningJAX58 min
Aug 31, 3:49 PM EDTSpecial Weather StatementJAXDuval26 min
Aug 31, 3:55 PM EDTAreal Flood WarningJAXDuval95 min
Aug 31, 3:56 PM EDTSpecial Weather StatementJAXNassau34 min
Aug 31, 4:01 PM EDTSpecial Weather StatementJAXMarion29 min
Aug 31, 4:21 PM EDTSpecial Weather StatementJAXNassau39 min
Aug 31, 4:26 PM EDTSpecial Weather StatementJAXHamilton34 min
Aug 31, 5:03 PM EDTSpecial Weather StatementJAXNassau57 min
Aug 31, 5:08 PM EDTSpecial Weather StatementJAXPutnam37 min
Aug 31, 5:10 PM EDTSpecial Weather StatementJAXGilchrist35 min
Aug 31, 5:11 PM EDTSpecial Weather StatementJAXSuwannee34 min
Aug 31, 5:46 PM EDTSpecial Weather StatementJAXSuwannee29 min
Aug 31, 5:57 PM EDTSpecial Weather StatementJAXPutnam33 min
Aug 31, 6:33 PM EDTSpecial Weather StatementJAXPutnam27 min
Aug 31, 7:04 PM EDTSpecial Weather StatementJAXFlagler41 min
Aug 31, 7:11 PM EDTSpecial Weather StatementJAXPutnam34 min
Aug 31, 7:22 PM EDTSpecial Weather StatementJAXPutnam23 min
Aug 31, 7:48 PM EDTSpecial Weather StatementJAXPutnam42 min

Nearby

Tornado Warnings in Florida, 2022Every tornado warning in 2022Tornadoes in 2022

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.