Alert archive / Florida / Tornado Warnings in 2021
Tornado Warning 27, NWS Jacksonville, FL
NWS Jacksonville, FL issued this tornado warning at Jun 20, 2021, 1:38 PM EDT for Putnam County, Saint Johns County, Florida. It was in force for 37 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 20, 2021, 1:38 PM EDT (17:38 UTC)
- Expired
- Jun 20, 2021, 2:15 PM EDT
- In force
- 37 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), 96 km from the middle of the area, began a volume at 17:37 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, 5.6 hours before the alert went out and 98 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.
- Mixed-layer CAPE
- 1078 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 938 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 170 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 9.6
The text
As transmitted.
133
WFUS52 KJAX 201738
TORJAX
FLC107-109-201815-
/O.NEW.KJAX.TO.W.0027.210620T1738Z-210620T1815Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
138 PM EDT Sun Jun 20 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 215 PM EDT.
* At 137 PM EDT, a severe thunderstorm capable of producing a tornado
was located over San Mateo, or over East Palatka, moving east at 30
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 150 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.
&&
LAT...LON 2964 8133 2962 8145 2962 8152 2961 8152
2960 8161 2964 8164 2977 8139
TIME...MOT...LOC 1737Z 255DEG 27KT 2963 8159
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
WOLF3 follow-up statements
068
WWUS52 KJAX 201751
SVSJAX
Severe Weather Statement
National Weather Service Jacksonville FL
151 PM EDT Sun Jun 20 2021
FLC107-109-201815-
/O.CON.KJAX.TO.W.0027.000000T0000Z-210620T1815Z/
St. Johns FL-Putnam FL-
151 PM EDT Sun Jun 20 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM EDT FOR SOUTH
CENTRAL ST. JOHNS AND EASTERN PUTNAM COUNTIES...
At 150 PM EDT, a severe thunderstorm capable of producing a tornado
was located near San Mateo, or near East Palatka, moving east at 20
mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
south central St. Johns and eastern Putnam Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 2964 8133 2962 8145 2962 8152 2961 8152
2961 8156 2963 8157 2968 8135
TIME...MOT...LOC 1750Z 261DEG 17KT 2962 8152
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
WOLF316
WWUS52 KJAX 201759
SVSJAX
Severe Weather Statement
National Weather Service Jacksonville FL
159 PM EDT Sun Jun 20 2021
FLC107-201808-
/O.CAN.KJAX.TO.W.0027.000000T0000Z-210620T1815Z/
Putnam FL-
159 PM EDT Sun Jun 20 2021
...THE TORNADO WARNING FOR EASTERN PUTNAM COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
LAT...LON 2964 8133 2962 8145 2962 8151 2963 8150
2968 8135
TIME...MOT...LOC 1758Z 261DEG 17KT 2961 8159
$$
FLC109-201815-
/O.CON.KJAX.TO.W.0027.000000T0000Z-210620T1815Z/
St. Johns FL-
159 PM EDT Sun Jun 20 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM EDT FOR SOUTH
CENTRAL ST. JOHNS COUNTY...
At 158 PM EDT, a severe thunderstorm capable of producing a tornado
was located over San Mateo, or over East Palatka, moving east at 20
mph. The storm has weakened but still shows some rotation.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
south central St. Johns County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 2964 8133 2962 8145 2962 8151 2963 8150
2968 8135
TIME...MOT...LOC 1758Z 261DEG 17KT 2961 8159
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
WOLF271
WWUS52 KJAX 201810
SVSJAX
Severe Weather Statement
National Weather Service Jacksonville FL
210 PM EDT Sun Jun 20 2021
FLC109-201820-
/O.EXP.KJAX.TO.W.0027.000000T0000Z-210620T1815Z/
St. Johns FL-
210 PM EDT Sun Jun 20 2021
...THE TORNADO WARNING FOR SOUTH CENTRAL ST. JOHNS COUNTY WILL EXPIRE
AT 215 PM EDT...
The tornadic thunderstorm which prompted the warning has weakened,
although it is still producing weak rotation aloft. The warning will
be allowed to expire, but the storm will be monitored closely.
LAT...LON 2964 8133 2962 8145 2962 8151 2963 8150
2968 8135
TIME...MOT...LOC 1810Z 258DEG 21KT 2963 8142
$$
WOLFThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 8:55 PM EDT | Special Weather Statement | JAX | Duval | 35 min |
| Jun 19, 9:26 PM EDT | Special Weather Statement | JAX | Saint Johns | 49 min |
| Jun 19, 10:09 PM EDT | Special Marine Warning | JAX | 51 min | |
| Jun 19, 10:37 PM EDT | Special Marine Warning | JAX | 53 min | |
| Jun 20, 2:11 AM EDT | Small Craft Advisory | JAX | 25 hr | |
| Jun 20, 5:08 AM EDT | Special Weather Statement | JAX | Hamilton | 37 min |
| Jun 20, 6:15 AM EDT | Special Weather Statement | JAX | Columbia, Hamilton, Suwannee | 45 min |
| Jun 20, 7:30 AM EDT | Special Weather Statement | JAX | Baker | 45 min |
| Jun 20, 9:21 AM EDT | Special Weather Statement | JAX | Bradford | 39 min |
| Jun 20, 9:34 AM EDT | Special Weather Statement | JAX | Gilchrist | 41 min |
| Jun 20, 10:04 AM EDT | Special Weather Statement | JAX | Duval | 41 min |
| Jun 20, 10:14 AM EDT | Special Weather Statement | JAX | Alachua | 46 min |
| Jun 20, 10:36 AM EDT | Severe Thunderstorm Warning | JAX | Alachua, Marion | 39 min |
| Jun 20, 11:05 AM EDT | Areal Flood Warning | JAX | Alachua, Marion | 85 min |
| Jun 20, 11:15 AM EDT | Special Weather Statement | JAX | Alachua, Bradford | 45 min |
| Jun 20, 11:45 AM EDT | Special Weather Statement | JAX | Putnam | 45 min |
| Jun 20, 11:57 AM EDT | Special Weather Statement | JAX | Bradford, Clay | 48 min |
| Jun 20, 12:02 PM EDT | Special Weather Statement | JAX | Putnam | 43 min |
| Jun 20, 12:21 PM EDT | Special Weather Statement | JAX | Gilchrist | 39 min |
| Jun 20, 1:19 PM EDT | Special Weather Statement | JAX | Putnam | 41 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.