Alert archive / Florida / Tornado Warnings in 2021

Tornado Warning 28, NWS Jacksonville, FL

June 22, 2021Putnam County, Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Jun 22, 2021, 2:51 PM EDT for Putnam County, Saint Johns County, Florida. It was in force for 9 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
Jun 22, 2021, 2:51 PM EDT (18:51 UTC)
Expired
Jun 22, 2021, 3:00 PM EDT
In force
9 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Putnam County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 95 km from the middle of the area, began a volume at 18:53 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, 6.9 hours before the alert went out and 96 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 2021-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 591 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 2021-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 square meters per square second.193958Sfc1 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
591 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
1014 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
176 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

As transmitted.

822 
WFUS52 KJAX 221851
TORJAX
FLC107-109-221915-
/O.NEW.KJAX.TO.W.0028.210622T1851Z-210622T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
251 PM EDT Tue Jun 22 2021

The National Weather Service in Jacksonville has issued a

* Tornado Warning for...
  South central St. Johns County in northeastern Florida...
  East central Putnam County in northeastern Florida...

* Until 315 PM EDT.
    
* At 251 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over East Palatka, moving northeast at 25 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...
  Hastings around 305 PM EDT.

Other locations impacted by this tornadic thunderstorm include Spuds.

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.

&&

LAT...LON 2962 8149 2962 8152 2961 8152 2959 8159
      2967 8164 2981 8145 2967 8134
TIME...MOT...LOC 1851Z 222DEG 20KT 2966 8158 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

ZIBURA
1 follow-up statement
763 
WWUS52 KJAX 221900
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
300 PM EDT Tue Jun 22 2021

FLC107-109-221910-
/O.CAN.KJAX.TO.W.0028.000000T0000Z-210622T1915Z/
St. Johns FL-Putnam FL-
300 PM EDT Tue Jun 22 2021

...THE TORNADO WARNING FOR SOUTH CENTRAL ST. JOHNS AND EAST CENTRAL
PUTNAM COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

LAT...LON 2962 8149 2962 8152 2961 8152 2959 8159
      2967 8164 2981 8145 2967 8134
TIME...MOT...LOC 1858Z 222DEG 20KT 2970 8154 

$$

ZIBURA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 9:24 AM EDTSpecial Weather StatementJAXHamilton51 min
Jun 22, 9:51 AM EDTSpecial Weather StatementJAXSuwannee39 min
Jun 22, 10:16 AM EDTSpecial Weather StatementJAXColumbia, Hamilton, Suwannee44 min
Jun 22, 10:58 AM EDTSpecial Weather StatementJAXBaker, Columbia, Gilchrist, Suwannee, Union62 min
Jun 22, 11:59 AM EDTSpecial Weather StatementJAXBaker, Bradford, Clay, Columbia, Duval, Nassau and 2 more61 min
Jun 22, 12:06 PM EDTSpecial Weather StatementJAXAlachua, Gilchrist, Marion, Putnam54 min
Jun 22, 12:22 PM EDTSevere Thunderstorm WarningJAXBaker, Bradford, Union38 min
Jun 22, 12:39 PM EDTSpecial Marine WarningJAX2 hr
Jun 22, 12:58 PM EDTSpecial Weather StatementJAXAlachua, Bradford, Clay, Duval, Flagler, Gilchrist and 4 more62 min
Jun 22, 1:17 PM EDTAreal Flood WarningJAXAlachua, Bradford, Columbia, Gilchrist, Suwannee, Union118 min
Jun 22, 1:46 PM EDTSevere Thunderstorm WarningJAXPutnam29 min
Jun 22, 1:59 PM EDTSpecial Weather StatementJAXFlagler61 min
Jun 22, 2:03 PM EDTSpecial Weather StatementJAXSaint Johns27 min
Jun 22, 2:10 PM EDTSpecial Marine WarningJAX95 min
Jun 22, 2:29 PM EDTSpecial Weather StatementJAXPutnam, Saint Johns46 min
Jun 22, 2:44 PM EDTSpecial Marine WarningJAX91 min
Jun 22, 2:49 PM EDTSpecial Weather StatementJAXMarion41 min
Jun 22, 3:15 PM EDTSpecial Weather StatementJAXFlagler, Marion, Putnam60 min
Jun 22, 3:43 PM EDTSpecial Marine WarningJAX92 min
Jun 22, 4:20 PM EDTSpecial Weather StatementJAXMarion55 min

Nearby

Tornado Warnings in Florida, 2021Every tornado warning in 2021Tornadoes 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.