Alert archive / Florida / Tornado Warnings in 2021
Tornado Warning 16, NWS Jacksonville, FL
NWS Jacksonville, FL issued this tornado warning at Mar 18, 2021, 3:07 PM EDT for Alachua County, Bradford County, Union County, Florida. It was in force for 23 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
- Mar 18, 2021, 3:07 PM EDT (19:07 UTC)
- Expired
- Mar 18, 2021, 3:30 PM EDT
- In force
- 23 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Alachua County, FL, Bradford County, FL, Union County, FL
The radar
The Jacksonville radar (KJAX), 93 km from the middle of the area, began a volume at 19:06 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 18, 11:42 AM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 7.1 hours before the alert went out and 94 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
- 162 J/kg
- Mixed-layer CIN
- -183 J/kg
- Mixed-layer LCL
- 888 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 220 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
704
WFUS52 KJAX 181907
TORJAX
FLC001-007-125-181930-
/O.NEW.KJAX.TO.W.0016.210318T1907Z-210318T1930Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
307 PM EDT Thu Mar 18 2021
The National Weather Service in Jacksonville has issued a
* Tornado Warning for...
Central Bradford County in northern Florida...
North central Alachua County in northern Florida...
Southeastern Union County in northern Florida...
* Until 330 PM EDT.
* At 306 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Alachua, or 8 miles southwest of Worthington
Spring, moving northeast at 45 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...
Worthington Spring and Worthington Springs around 315 PM EDT.
Raiford, New River, Beasley and Sampson around 330 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Brooker, La Crosse and Hampton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to 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 2980 8249 2989 8253 3006 8224 2987 8213
TIME...MOT...LOC 1906Z 237DEG 38KT 2983 8250
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
NELSON2 follow-up statements
923
WWUS52 KJAX 181917
SVSJAX
Severe Weather Statement
National Weather Service Jacksonville FL
317 PM EDT Thu Mar 18 2021
FLC001-007-125-181930-
/O.CON.KJAX.TO.W.0016.000000T0000Z-210318T1930Z/
Bradford FL-Alachua FL-Union FL-
317 PM EDT Thu Mar 18 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM EDT FOR CENTRAL
BRADFORD...NORTH CENTRAL ALACHUA AND SOUTHEASTERN UNION COUNTIES...
At 316 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Worthington Spring, moving east at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
New River and Beasley around 330 PM EDT.
Sampson around 335 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Brooker, La Crosse and Hampton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2981 8242 2988 8246 2997 8240 3006 8224
2987 8213
TIME...MOT...LOC 1916Z 253DEG 36KT 2986 8240
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
AK207
WWUS52 KJAX 181929
SVSJAX
Severe Weather Statement
National Weather Service Jacksonville FL
329 PM EDT Thu Mar 18 2021
FLC001-007-125-181938-
/O.EXP.KJAX.TO.W.0016.000000T0000Z-210318T1930Z/
Bradford FL-Alachua FL-Union FL-
329 PM EDT Thu Mar 18 2021
...THE TORNADO WARNING FOR CENTRAL BRADFORD...NORTH CENTRAL ALACHUA
AND SOUTHEASTERN UNION COUNTIES WILL EXPIRE AT 330 PM EDT...
The circulations has weakened and the Tornado Warning will be
allowed to expire. However, damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.
A Tornado Watch remains in effect until 600 PM EDT for northern
Florida.
LAT...LON 2981 8242 2988 8246 2997 8240 3006 8224
2987 8213
TIME...MOT...LOC 1928Z 237DEG 36KT 2991 8229
$$
AKThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 2:31 AM EDT | Wind Advisory | JAX | Alachua, Baker, Bradford, Duval, Flagler, Gilchrist and 4 more | 15 hr |
| Mar 18, 11:53 AM EDT | Special Weather Statement | JAX | Hamilton, Suwannee | 82 min |
| Mar 18, 12:55 PM EDT | Special Weather Statement | JAX | Gilchrist, Suwannee | 50 min |
| Mar 18, 1:16 PM EDT | Special Weather Statement | JAX | Hamilton | 29 min |
| Mar 18, 1:33 PM EDT | Special Weather Statement | JAX | Columbia, Suwannee | 42 min |
| Mar 18, 1:41 PM EDT | Severe Thunderstorm Warning | JAX | Columbia, Gilchrist, Suwannee | 49 min |
| Mar 18, 2:02 PM EDT | Special Weather Statement | JAX | Gilchrist | 43 min |
| Mar 18, 2:09 PM EDT | Special Weather Statement | JAX | Baker, Bradford, Union | 66 min |
| Mar 18, 2:29 PM EDT | Severe Thunderstorm Warning | JAX | Alachua, Gilchrist | 46 min |
| Mar 18, 2:40 PM EDT | Tornado Warning | JAX | Alachua, Gilchrist | 35 min |
| Mar 18, 2:58 PM EDT | Severe Thunderstorm Warning | JAX | Alachua, Bradford, Union | 47 min |
| Mar 18, 3:22 PM EDT | Severe Thunderstorm Warning | JAX | Baker, Bradford, Clay, Duval, Union | 38 min |
| Mar 18, 3:40 PM EDT | Special Weather Statement | JAX | Duval, Nassau | 50 min |
| Mar 18, 3:57 PM EDT | Severe Thunderstorm Warning | JAX | Baker, Bradford, Clay, Duval | 36 min |
| Mar 18, 3:59 PM EDT | Special Marine Warning | JAX | 91 min | |
| Mar 18, 4:10 PM EDT | Tornado Warning | JAX | Clay, Duval | 11 min |
| Mar 18, 4:41 PM EDT | Special Weather Statement | JAX | Saint Johns | 19 min |
| Mar 18, 4:49 PM EDT | Special Weather Statement | JAX | Citrus | 56 min |
| Mar 18, 4:52 PM EDT | Special Marine Warning | JAX | 83 min | |
| Mar 18, 5:31 PM EDT | Special Weather Statement | JAX | Duval | 44 min |
| Mar 18, 6:07 PM EDT | Special Weather Statement | JAX | Duval | 23 min |
| Mar 18, 6:10 PM EDT | Special Marine Warning | JAX | 2 hr | |
| Mar 18, 7:09 PM EDT | Special Weather Statement | JAX | Saint Johns | 51 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.