Alert archive / Florida / Tornado Warnings in 2024

Tornado Warning 67, NWS Jacksonville, FL

September 26, 2024Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Sep 26, 2024, 5:43 PM EDT for Saint Johns County, Florida. It was in force for 17 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 26, 2024, 5:43 PM EDT (21:43 UTC)
Expired
Sep 26, 2024, 6:00 PM EDT
In force
17 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 70 km from the middle of the area, began a volume at 21:47 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.

IssuedProductOfficeLasted
Sep 26, 10:49 AM EDTTornado WatchSPC11 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 9.7 hours before the alert went out and 71 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 2024-09-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 637 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 2024-09-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 square meters per square second.193958Sfc1 km3 km6 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
637 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this tornado warning went out at Sep 26, 1:54 PM EDT, 3 hours 49 minutes earlier.

Area forecast discussion, Sep 26, 1:54 PM EDT, 3 hours 49 minutes before
Area Forecast Discussion
National Weather Service Jacksonville FL
154 PM EDT Thu Sep 26 2024

...New NEAR TERM, SHORT TERM, LONG TERM...

.NEAR TERM...
Issued at 147 PM EDT Thu Sep 26 2024

For the latest NE FL and SE GA Daily Key Messages please visit:
https://www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf

Hurricane Helene is expected to make landfall along the big bend of
FL this evening, then track to the north. Winds will subside
greatly toward dawn as the system moves away. Precipation chances
will trail off quickly overnight as well. Lows will range from the
lower 70s inland, to the upper 70s coast.

For additional information on local impacts from Helene, please
refer to the Hurricane Local Statement product, HLS.

&&

.SHORT TERM...
(Friday through Saturday night)
Issued at 147 PM EDT Thu Sep 26 2024

The remnants of Helene will move well to the north northwest of
the area during the day Friday, with a cold front extending from
it, stretching down the east coast, and across central FL. Friday
will largely be a dry day, except for a few showers and storms
along the frontal boundary. Away from this boundary, sunshine will
increase during the afternoon. Highs Friday will range from the
mid 80s inland to the around 90 along the coast.

The region will remain between the remnant tropical low well to the
northwest, and frontal boundary to the southeast Friday night. This
front will drift north into northern FL during the day Saturday. As
the front moves back into area, precipitation chances will increase
from south to north during the day Saturday. Lows Friday night and
Saturday night will range from the mid 60s inland SE GA, to the mid
70s along the coast. Highs Saturday will generally range in the mid
to upper 90s.

&&

.LONG TERM...
(Sunday through next Thursday)
Issued at 147 PM EDT Thu Sep 26 2024

Cold frontal boundaries will affect the region through Wednesday,
bringing chances for showers and storms. The front is expected to
push to the south on Thursday, as high pressure builds to the
northwest. The best chances for precipitation this period will be
across NE FL. Temperatures will trend above normal through
Wednesday, then trend near normal Thursday.

&&

.MARINE...

Hurricane Helene is expected to make landfall in the big bend
region of FL this evening. Helene will quickly move north
northwest of the area Tonight into Friday morning. Conditions
will improve during the day on Friday, as remnants of the
tropical system moves further away to the northwest. A frontal
zone will near area through the weekend into early next week.

Rip Currents: High through Friday

&&

.AVIATION...
(18Z TAFS)
Issued at 114 PM EDT Thu Sep 26 2024

Showers and storms will move through the area as outer rain bands
from Hurricane Helene push in from the south to north. Wind bands
will push through the area again by around 20z bringing numerous
showers and thunderstorms, with gusts from 35kt to 50kt possible
with the stronger storms. Lower level WS possible at TAF sites as
the gusts get going. Activity will linger through much of the TAF
period, beginning to lessen near the end of the TAF period.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  72  84  66  86 / 100  20   0   0
SSI  79  88  73  87 /  80  30   0  10
JAX  78  90  72  90 /  90  30   0  20
SGJ  78  91  74  89 /  70  30  10  30
GNV  75  87  71  88 /  90  30  10  20
OCF  76  88  74  88 /  90  40  20  30

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...Tropical Storm Warning for FLZ023-024-030-031-033-038-124-125-
     132-133-136>138-140-225-232-237-240-325-425.

     Flood Watch through Friday morning for FLZ021-023-024-030-031-
     033-035-038-120-124-125-132-133-136>138-140-220-225-232-236-
     237-240-322-325-340-422-425-522.

     Hurricane Warning for FLZ021-035-120-220-236-322-340-422-522.

     Coastal Flood Advisory until 8 AM EDT Friday for FLZ033-038-132-
     137.

     Coastal Flood Warning until 8 AM EDT Friday for FLZ124-125-133-
     138-225-325.

     High Rip Current Risk through Friday evening for FLZ124-125-133-
     138.

     High Surf Advisory until 4 PM EDT Friday for FLZ124-125-133-138.

GA...Tropical Storm Warning for GAZ133>136-151>154-165-166-250-264-
     350-364.

     Flood Watch through Friday morning for GAZ132>136-149-151>154-
     162-163-165-166-250-264-350-364.

     Hurricane Warning for GAZ132-149-162-163.

     Coastal Flood Warning until 8 AM EDT Friday for GAZ154-166.

     High Rip Current Risk through Friday evening for GAZ154-166.

     High Surf Advisory until 4 PM EDT Friday for GAZ154-166.

AM...Tropical Storm Warning for AMZ450-452-454-470-472-474.

&&

In the hours before

Local storm report, Sep 26, 3:52 PM EDT, 1 hour 51 minutes before
Preliminary Local Storm Report
National Weather Service Jacksonville FL
352 PM EDT Thu Sep 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0343 PM     Tropical Cyclone 1 ENE Fort Caroline     30.39N 81.48W
09/26/2024                   Duval              FL   Mesonet

            Mesonet station XJAK Jacksonville measured a
            wind gust of 41 mph.

&&

WLC
Local storm report, Sep 26, 3:57 PM EDT, 1 hour 46 minutes before
Preliminary Local Storm Report
National Weather Service Jacksonville FL
357 PM EDT Thu Sep 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     Tropical Cyclone Marineland              29.67N 81.21W
09/26/2024                   Flagler            FL   Mesonet

            Mesonet station 1423W Fswn Flagler County Em
            Marineland measured a wind gust of 45 mph.

&&

WLC
Local storm report, Sep 26, 4:52 PM EDT, 51 minutes before
Preliminary Local Storm Report
National Weather Service Jacksonville FL
452 PM EDT Thu Sep 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0440 PM     Tropical Cyclone 2 NW Saint Augustine    29.92N 81.33W
09/26/2024                   St. Johns          FL   Mesonet

            Mesonet station XLWS Lewis measured a wind
            gust of 40 mph.

&&

WLC
Local storm report, Sep 26, 4:57 PM EDT, 46 minutes before
Preliminary Local Storm Report
National Weather Service Jacksonville FL
457 PM EDT Thu Sep 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0233 PM     Tornado          2 NE Broxton            31.65N 82.86W
09/26/2024                   Coffee             GA   Emergency Mngr

            Update to previous tornado report from 2 NE
            Broxton. Tornado sighted on ground near Hwy
            268E damaging Shingles and shifting a
            double-wide trailer off its foundation at
            2507 and 2807 Hwy 268E. Multiple trees down
            with confirmed damage at 1668, 1700, and
            1732 George Deen Rd, with some trees having
            fallen on a house.

&&

WLC
Local storm report, Sep 26, 5:37 PM EDT, 6 minutes before
Preliminary Local Storm Report
National Weather Service Jacksonville FL
537 PM EDT Thu Sep 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 PM     Tropical Cyclone Marineland              29.67N 81.21W
09/26/2024                   Flagler            FL   Mesonet

            Mesonet station 1423W Fswn Flagler County Em
            Marinelan measured a wind gust of 51 mph.

&&

WLC
Local storm report, Sep 26, 5:40 PM EDT, 3 minutes before
Preliminary Local Storm Report
National Weather Service Jacksonville FL
540 PM EDT Thu Sep 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0527 PM     Tropical Cyclone 1 SSE Crescent Beach    29.72N 81.23W
09/26/2024                   St. Johns          FL   Mesonet

            Mesonet station XHSE SummerHouse measured a
            wind gust of 43 mph.

&&

WLC

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 26, 5:31 PM EDTTornado WarningJAXSaint Johns14 min
Sep 26, 5:55 PM EDTTornado WarningJAXSaint Johns6 min
Sep 26, 6:07 PM EDTSpecial Marine WarningJAX44 min
Sep 26, 10:15 AM EDTTornado WarningJAXCamden, Glynn, Wayne30 min
Sep 26, 11:14 AM EDTTornado WarningJAXGlynn17 min
Sep 26, 12:48 PM EDTTornado WarningJAXAppling, Bacon, Pierce27 min
Sep 26, 1:15 PM EDTTornado WarningJAXAppling30 min
Sep 26, 1:45 PM EDTTornado WarningJAXAppling30 min
Sep 26, 2:14 PM EDTTornado WarningJAXBacon, Coffee31 min
Sep 26, 2:23 PM EDTTornado WarningJAXCoffee, Jeff Davis37 min
Sep 26, 2:41 PM EDTTornado WarningJAXCoffee, Jeff Davis34 min
Sep 26, 7:23 PM EDTTornado WarningJAXCharlton, Clinch, Ware24 min

Nearby

Tornado Warnings in Florida, 2024Every tornado warning in 2024Tornadoes in 2024

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.