Tornado Warning 28, NWS Jacksonville, FL

789 
WWUS52 KJAX 240223
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
1023 PM EDT Thu Apr 23 2020

FLC125-240232-
/O.CAN.KJAX.TO.W.0028.000000T0000Z-200424T0245Z/
Union FL-
1023 PM EDT Thu Apr 23 2020

...THE TORNADO WARNING FOR SOUTH CENTRAL UNION COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until midnight EDT for northern and
northeastern Florida.

LAT...LON 2974 8242 2985 8242 2996 8229 3000 8222
      3010 8201 2984 8191
TIME...MOT...LOC 0222Z 252DEG 38KT 2990 8223 

$$

FLC001-007-019-240245-
/O.CON.KJAX.TO.W.0028.000000T0000Z-200424T0245Z/
Bradford FL-Alachua FL-Clay FL-
1023 PM EDT Thu Apr 23 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT FOR
BRADFORD...NORTHEASTERN ALACHUA AND WEST CENTRAL CLAY COUNTIES...
    
At 1022 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Sampson, or 8 miles southwest of Starke, moving east
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...
  Starke around 1035 PM EDT.
  Camp Blanding and Kingsley around 1045 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Lawtey, La Crosse, Waldo, Hampton and Brooker.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 2974 8242 2985 8242 2996 8229 3000 8222
      3010 8201 2984 8191
TIME...MOT...LOC 0222Z 252DEG 38KT 2990 8223 

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

$$

SHASHY

417 
WWUS52 KJAX 240239
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
1039 PM EDT Thu Apr 23 2020

FLC001-007-019-240249-
/O.EXP.KJAX.TO.W.0028.000000T0000Z-200424T0245Z/
Bradford FL-Alachua FL-Clay FL-
1039 PM EDT Thu Apr 23 2020

...THE TORNADO WARNING FOR BRADFORD...NORTHEASTERN ALACHUA AND WEST
CENTRAL CLAY COUNTIES WILL EXPIRE AT 1045 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

A Tornado Watch remains in effect until midnight EDT for northern and
northeastern Florida.

LAT...LON 2974 8242 2985 8242 2996 8229 3000 8222
      3010 8201 2984 8191
TIME...MOT...LOC 0239Z 252DEG 34KT 2995 8207 

$$

SHASHY

Area Forecast Discussion
National Weather Service Jacksonville FL
941 PM EDT Thu Apr 23 2020

...TORNADO WATCH FOR NORTHEAST FL AND PORTIONS OF SOUTHEAST GA
THROUGH MIDNIGHT...

...WIDESPREAD THUNDERSTORMS WITH HEAVY RAINFALL FOR NORTHEAST AND
NORTH CENTRAL FL ON FRIDAY MORNING...

.UPDATE...

0130Z LAPS analysis indicates 1500-2000 j/kg of surface-based
CAPE south of Interstate 10 with effective wind shear in the
0-1km in the 300-400 m2/s2 across west of I-95 and south of the
FL/GA border. This best shear lies within and ahead of the the
convective line from Lake City to Fort White to Trenton. This line
is exhibiting down line segments with book end mesocylone along
the ends of the line. Ahead of the line, outflow induced genesis
with some new notable intensification will allow additional and
powerful thunderstorms to translate eastward into the I-95
corrior during the late evening into the overnight hours. Across
northern Florida will start clearing out some counties from
the tornado watch behind this front. Damaging winds, Tornadoes, Hail,
and Flash Flooding remain a concern this evening into tonight with
the tornado watch continuing until midnight.

&&

.PREV DISCUSSION [655 PM EDT]...

.NEAR TERM [Through Friday]...

The presence of the instability gradient along the Interstate 10
corridor will essentially mark the area of greatest concern for
severe thunderstorms within the squall line as it quickly moves
into our region from the west towards sunset, with model soundings
depicting 0-1 km shear values of 30-40 knots, 0-6 km shear values
of 60-70 knots, and storm relative helicity values of 200-350 for
locations in coastal southeast GA, northeast and north central
FL. The Storm Prediction Center has placed much of our area within
an Enhanced Risk for severe thunderstorm development overnight,
but instability will mostly be based over northeast and north
central FL and possibly extending into coastal southeast GA. The
instability gradient may result in mesoscale low pressure
development along the squall line, which could enhance the
potential for tornadoes developing along the squall line this
evening in northeast FL. Convection should be elevated for most
inland locations in southeast GA as the squall line pushes
through, where hail, GUSTY winds and heavy downpours will continue
this evening. Most of the short-term, high resolution guidance
indicates that the squall line will decelerate towards midnight as
it moves towards coastal locations and into north central FL,
with heavy rainfall and localized flooding possible after midnight
in northeast FL. Convection should exit inland southeast GA after
midnight, with activity likely continuing for coastal southeast
GA through the early morning hours on Friday. Temperatures should
remain steady in the 60s for most locations overnight, with rain
cooled air dropping lows closer to 70 for north central FL after
midnight.

Strong to severe thunderstorms will be possible south of I-10 on
Friday as low pressure progresses northeastward into the Mid-
Atlantic states and this system's cold front decelerates over our
region. The Storm Prediction Center has placed locations from
Gainesville to St. Augustine and points southward in a Slight Risk
for severe thunderstorm development. Strong southwesterly speed
shear in these locations will present a damaging wind threat,
mainly during the morning hours, while slow movement of
convection potentially presents an increasing flood threat for
urban locations, with 1-3 inches of rainfall likely for locations
south of I-10. Decreasing cloudiness over southeast GA during the
afternoon hours and breezy westerly winds will boost highs into
the low to mid 80s, with highs likely staying around 80 in
northeast and north central FL due to clouds and widespread
convection. Showers and thunderstorms should exit our area during
the mid to late afternoon hours as support aloft for the cold
front continues to wane.

.SHORT TERM [Friday Night Through Sunday Night]...

The next upstream shortwave trough that will impact our region is
currently taking shape over the Rockies and will dive
southeastward through the southern Plains states on Friday,
pivoting eastward through the Ozarks on Friday evening and
entering the Tennessee Valley by Saturday morning. This weather
pattern will lift the remnant frontal boundary northward as a warm
front as surface low pressure strengthens over the Tennessee
Valley. Stratus should overspread our region from the northeast
Gulf of Mexico during the predawn hours on Saturday as low level
southerly flow develops, keeping lows in the 60s area-wide. Breezy
south-southwesterly winds will boost highs to the upper 80s to
near 90 on Saturday afternoon. Models continue to disagree greatly
on the level of moisture return into our region ahead of this
system's cold front, with higher instability likely remaining over
north central FL, where strong to isolated severe thunderstorms
could develop ahead of the front along the eastward moving Gulf
coast seabreeze boundary.

Any deeper moisture that does manage to penetrate into our
southern counties on Saturday should quickly exit on Saturday
evening well ahead of the cold front, with some stratus possible
overnight and warm air advection keeping lows in the 60s. A drier
air mass will then overspread our region on Sunday, with breezy
westerly winds keeping highs in the 80s for coastal southeast GA
and all of northeast and north central FL, while some late
arriving cool air advection keeps highs in the upper 70s for most
of inland southeast GA. Cool air advection will then advect into
our region on Sunday night as surface ridging builds over the
Tennessee Valley, and lows will fall into the 50s for most
locations by Monday morning.

.LONG TERM [Monday Through Thursday]...

Troughing over the eastern U.S. slowly depart early next week as a
weakening surface ridge settles over the southeastern states.
Onshore low level winds and plenty of sunshine on Monday will
allow highs to climb to the 75-80 range, with radiational cooling
allowing lows to again fall to the 50s on Monday night. High
pressure will then shift offshore by Tuesday, with inland highs
warming back to the low to mid 80s, with an afternoon sea breeze
keeping coastal highs in the 70s. All attention will then turn to
a shortwave trough that will be digging southeastward from the
upper Midwest towards midweek, which will drive another energetic
cold front into the southeastern states by Wednesday night and
Thursday. Highs will warm back to the upper 80s by midweek
locally, with showers and thunderstorms beginning as early as
Wednesday afternoon in southeast GA and then elsewhere by
Wednesday night ahead of this storm system.

.MARINE...

A strong cold front traversing the southeastern states will
decelerate as it moves through southeast Georgia overnight and
will stall just northwest of our local waters on Friday night and
Saturday. Widespread showers and thunderstorms will continue over
our local waters through early Friday evening, with strong to
severe thunderstorms possible tonight through Friday morning for
the northeast Florida waters. A Small Craft Advisory continues for
the near shore waters through late this evening, with advisory
conditions through Friday morning offshore. Another low pressure
center developing over northern Texas on Friday morning will
progress northeastward through the Tennessee and Ohio Valleys on
Saturday, pushing another strong cold front through our waters on
Saturday evening. Showers and thunderstorms may develop ahead of
this front on Saturday afternoon in the northeast Florida waters.
High pressure will build over the Tennessee Valley in the wake of
this front on Sunday night and will sink southward over our local
waters by Monday evening.

.FIRE WEATHER...

Strong to severe thunderstorms will be possible overnight along the
Interstate 10 corridor in northeast Florida, with damaging wind
gusts, hail and tornadoes possible this evening along the I-10
corridor. Showers and thunderstorms will gradually end from
northwest to southeast for inland portions of southeast Georgia
after midnight, with activity continuing through sunrise for
coastal southeast GA. Widespread thunderstorm activity over
northeast FL on Friday morning will gradually sink southward into
north central FL by the late morning and early afternoon hours,
with strong to isolated severe thunderstorms and widespread heavy
rainfall expected. Showers and thunderstorms will exit north
central FL before sunset on Friday. Southwesterly surface and
transport winds will then strengthen after sunrise on Saturday,
with scattered showers and thunderstorms expected south of
Interstate 10. High dispersion values are expected area-wide
during on Saturday afternoon.

.HYDROLOGY...

Areas most prone to localized flooding issues overnight will be
near the Altamaha and Ocmulgee River basins and where soils are
still somewhat more saturated due to recent heavy rainfall last
weekend. Another area of potential localized flooding potential
will be across NE FL along the I-10 corridor after midnight Thu
through Fri. This area could certainly use the rain given long
term deficits, however, depending on the intensity of rainfall and
the potential for training cells, some areas could have localized
flooding issues across NE FL.

&&

.PRELIMINARY POINT TEMPS/POPS...

AMG  64  82  61  87  61 /  90  20   0  10  10
SSI  67  80  67  86  65 /  80  50  10  10  10
JAX  68  82  67  89  65 /  80  60  10  20  10
SGJ  69  81  68  87  68 /  80  70  30  40  10
GNV  69  81  67  87  65 / 100  60  20  30  10
OCF  70  82  68  87  67 /  80  70  30  40  10

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...High Rip Current Risk until 2 AM EDT Friday for Coastal Duval-
     Coastal Flagler-Coastal Nassau-Coastal St. Johns.

GA...None.
AM...Small Craft Advisory until 11 AM EDT Friday for Waters from
     Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM-
     Waters from Fernandina Beach to St. Augustine FL from 20 to
     60 NM-Waters from St. Augustine to Flagler Beach FL from 20
     to 60 NM.

     Small Craft Advisory until 11 PM EDT this evening for Coastal
     waters from Altamaha Sound to Fernandina Beach FL out 20 NM-
     Coastal waters from Fernandina Beach to St. Augustine FL
     out 20 NM-Coastal waters from St. Augustine to Flagler
     Beach FL out 20 NM.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
742 PM EDT THU APR 23 2020

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

0243 PM     HAIL             HORTENSE                31.34N 81.96W
04/23/2020  M1.00 INCH       BRANTLEY           GA   BROADCAST MEDIA

            BROADCAST MEDIA RELAYED A VIDEO ON SOCIAL
            MEDIA OF UP TO QUARTER SIZE HAIL COATING THE
            GROUND IN HORTENSE, GA.

&&

RB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
752 PM EDT THU APR 23 2020

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

0352 PM     TSTM WND DMG     2 N JEKYLL ISLAND       31.07N 81.41W
04/23/2020                   GLYNN              GA   BROADCAST MEDIA

            BROADCAST MEDIA RELAYED PHOTOS THROUGH
            SOCIAL MEDIA OF TREES DOWNED IN JEKYLL
            ISLAND. TIME BASED ON RADAR.

&&

RB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
835 PM EDT THU APR 23 2020

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

0753 PM     TSTM WND DMG     4 SW JENNINGS           30.57N 83.16W
04/23/2020                   HAMILTON           FL   911 CALL CENTER

            REPORT OF MULTIPLE TREES DOWN BRINGING DOWN
            A POWERLINE AND CAUSING A SMALL FIRE AND
            COVERING A ROADWAY NEAR THE INTERSECTION OF
            NW COUNTY ROAD 152 AND NW 13TH DRIVE. TIME
            BASED ON RADAR.

&&

RB

Special Weather Statement
National Weather Service Jacksonville FL
846 PM EDT Thu Apr 23 2020

GAZ136-151>154-165-166-250-264-364-240130-
Pierce GA-Northeastern Charlton GA-Inland Glynn GA-Inland Camden GA-
Coastal Glynn GA-Western Charlton GA-Brantley GA-Coastal Camden GA-
Wayne GA-Northern Ware GA-
846 PM EDT Thu Apr 23 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CAMDEN...GLYNN...
SOUTHEASTERN PIERCE...BRANTLEY...EAST CENTRAL WARE...WAYNE AND
NORTHERN CHARLTON COUNTIES UNTIL 930 PM EDT...

* At 846 PM EDT, National Weather Service meteorologists were
  tracking strong thunderstorms along a line extending from 7 miles
  west of Donald to near Gardi to 7 miles west of Race Pond. Movement
  was east at 50 mph.

* Winds in excess of 50 mph possible with these storms.

* Locations impacted include...
  Brunswick, St. Simons Island, Jesup, Woodbine, Nahunta, Dock
  Junction, Gardi, Country Club Estates, Thalmann and Sea Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is occurring with these storms, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Jacksonville on
Facebook and Twitter.

&&

A Tornado Watch remains in effect until midnight EDT for southeastern
Georgia.

LAT...LON 3119 8125 3110 8137 3097 8145 3096 8237
      3149 8192 3183 8206 3178 8198 3179 8196
      3167 8185 3158 8170 3156 8170 3148 8162
      3143 8161 3136 8152 3133 8144 3128 8139
      3129 8138 3131 8134 3128 8132 3127 8122
TIME...MOT...LOC 0046Z 249DEG 46KT 3180 8197 3151 8185 3098 8225

SHASHY

Special Weather Statement
National Weather Service Jacksonville FL
914 PM EDT Thu Apr 23 2020

FLZ024-124-GAZ165-166-264-364-240215-
Inland Nassau FL-Coastal Nassau FL-Northeastern Charlton GA-
Inland Camden GA-Western Charlton GA-Coastal Camden GA-
914 PM EDT Thu Apr 23 2020

...SIGNIFICANT WEATHER ADVISORY FOR NASSAU...CAMDEN AND NORTHEASTERN
CHARLTON COUNTIES UNTIL 1015 PM EDT...

* At 914 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm near Homeland, or near Folkston,
  moving east at 45 mph.

* Winds in excess of 45 mph possible with this storm.

* Locations impacted include...
  St. Marys, Kingsland, Fernandina Beach, Hilliard, Folkston,
  Woodbine, Kings Bay Base, Yulee, Homeland and Kings Ferry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Jacksonville on
Facebook and Twitter.

&&

A Tornado Watch remains in effect until midnight EDT for northeastern
Florida...and southeastern Georgia.

LAT...LON 3079 8142 3060 8140 3058 8147 3060 8209
      3096 8205 3101 8138
TIME...MOT...LOC 0114Z 268DEG 37KT 3087 8196

SHASHY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
917 PM EDT THU APR 23 2020

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

0911 PM     TORNADO          3 N BELL                29.84N 82.87W
04/23/2020                   GILCHRIST          FL   PUBLIC

            TRAINED STORM SPOTTER REPORTED A TORNADO
            OBSERVED MOVING EAST NEAR US HIGHWAY 129
            ABOUT 3 MILES NORTH OF BELL.

&&

RB