Alert archive / Florida / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 91, NWS Jacksonville, FL

July 3, 2019Clay County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jul 3, 2019, 3:34 PM EDT for Clay County, Florida. It was in force for 41 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
Jul 3, 2019, 3:34 PM EDT (19:34 UTC)
Expired
Jul 3, 2019, 4:15 PM EDT
In force
41 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Clay County, FL

The radar

The Jacksonville radar (KJAX), 58 km from the middle of the area, began a volume at 19:34 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, 7.6 hours before the alert went out and 59 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 2019-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1727 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2019-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 square meters per square second.1939Sfc1 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
1727 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
1292 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 3, 10:08 AM EDT, 5 hours 26 minutes earlier.

Area forecast discussion, Jul 3, 10:08 AM EDT, 5 hours 26 minutes before
Area Forecast Discussion
National Weather Service Jacksonville FL
1008 AM EDT Wed Jul 3 2019

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
6 PM EDT THIS EVENING...

.UPDATE...
Just some middle to high level cloudiness this morning will be
replaced by scattered cumulus cloud streets through the early
afternoon. With sinking air locally low level cloudiness will be
somewhat suppressed allowing for high temperatures approaching
the century mark and heat index values up to 110F. Any time we get
temperatures that high with high relative humidity a few storms
will blow through the inversion/sinking air and expect that to
happen along the east coast Sea Breeze front between 2 and 8 p.m. The
sea breeze will most likely set up near the St Johns River south
of Downtown and along I-95 north of Downtown. That said it
shouldn't get west of Trail Ridge before the cells fall apart. Some
of those storms will be strong and with weak steering currents
they will move slowly allowing for locally heavy rainfall.

THEN...Later this afternoon and this evening the West Coast Sea
Breeze will become active between 6 p.m. and 10 p.m. in the
vicinity of I-75 and will drift eastward. Same issues as before
with a few strong storms and locally heavy downpours in the areas
were storms move slowly.

&&

.AVIATION...
Just a scattered to broken mid layer and broken-overcast cirrus
this morning. Expect a cumulus layer to develop at 3-4 KFT between
14 to 18 utc. Sea breeze shower/TSTM development should begin
between 18-20 utc and mainly from The St Johns River/I-95
westward. Best chance of precipitation should be at KJAX and
KVQQ with tempos for those stations between 2-3SM and 3-5 KFT
Ceilings between 18-22 utc. Later in the day the west coast sea
breeze will become active with a similar tempo group for KGNV
between 22 and 02 utc.

&&

.MARINE...
An extended period with no marine headlines. Prevailing offshore
flow 10-15 kts for most of the period with a local SSE-ESE east
coast sea breeze developing each afternoon through Friday
nearshore. Combined seas 4 ft or less. Stronger WSW winds into
the weekend will likely keep east coast sea breeze offshore.
Nocturnal wind surge under SW flow will near 15 kts into the
weekend. Best chances of thunderstorms will focus inland through
Thursday, then thunderstorm chances increase over the local waters
into the weekend.

RIP CURRENTS: Low risk today and Thursday.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  99  76  96  74 /  60  60  70  50
SSI  95  81  91  78 /  30  20  30  30
JAX  98  77  95  76 /  50  40  50  40
SGJ  94  79  91  76 /  40  20  30  30
GNV  96  76  93  75 /  70  60  70  40
OCF  95  75  94  75 /  70  60  60  40

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...Heat Advisory until 6 PM EDT this evening for Baker-Bradford-
     Central Marion-Clay-Coastal Duval-Coastal Flagler-Coastal
     Nassau-Coastal St. Johns-Eastern Alachua-Eastern Marion-
     Gilchrist-Hamilton-Inland Duval-Inland Flagler-Inland
     Nassau-Inland St. Johns-Northern Columbia-Putnam-Southern
     Columbia-Suwannee-Union-Western Alachua-Western Marion.

GA...Heat Advisory until 6 PM EDT this evening for Atkinson-Brantley-
     Clinch-Coastal Camden-Coastal Glynn-Echols-Inland Camden-
     Inland Glynn-Northeastern Charlton-Northern Ware-Pierce-
     Southern Ware-Western Charlton.

AM...None.
&&

Sandrik/Nelson/Kennedy

In the hours before

Special weather statement, Jul 3, 2:48 PM EDT, 46 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
248 PM EDT Wed Jul 3 2019

GAZ165-166-031915-
Inland Camden GA-Coastal Camden GA-
248 PM EDT Wed Jul 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CAMDEN COUNTY UNTIL
315 PM EDT...

* At 248 PM EDT, National Weather Service meteorologists were
  tracking a cluster of strong thunderstorms near Waverly, or near
  Woodbine, moving south at 10 mph.

* Wind gusts up to 50 mph possible with this storm.

* Locations impacted include...
  Woodbine, Waverly, Tarboro and Colesburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

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

&&

LAT...LON 3091 8159 3091 8187 3102 8184 3115 8176
      3113 8170 3112 8169 3112 8168 3109 8157
TIME...MOT...LOC 1848Z 357DEG 8KT 3103 8176

SHASHY
Special weather statement, Jul 3, 2:56 PM EDT, 38 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
256 PM EDT Wed Jul 3 2019

GAZ132-133-031930-
Coffee GA-Jeff Davis GA-
256 PM EDT Wed Jul 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL COFFEE AND SOUTHWESTERN
JEFF DAVIS COUNTIES UNTIL 330 PM EDT...

* At 256 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm over Broxton, moving southeast at 5
  mph.

* Wind gusts of 50 to 55 mph possible with this storm.

* Locations impacted include...
  Douglas, Broxton and West Green.

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.

&&

LAT...LON 3163 8300 3175 8285 3166 8266 3150 8282
TIME...MOT...LOC 1856Z 310DEG 5KT 3164 8286

SHASHY
Special weather statement, Jul 3, 3:02 PM EDT, 32 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
302 PM EDT Wed Jul 3 2019

FLZ023>025-GAZ364-031945-
Inland Duval FL-Baker FL-Inland Nassau FL-Western Charlton GA-
302 PM EDT Wed Jul 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN NASSAU...EASTERN
BAKER...WEST CENTRAL DUVAL AND SOUTHERN CHARLTON COUNTIES UNTIL 345
PM EDT...

* At 302 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm near Bryceville, or 18 miles
  southwest of Callahan, moving east at 5 mph.

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

* Locations impacted include...
  Bryceville, Baldwin and Whitehouse Air Field.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm. If
you can hear thunder, you are close enough to be struck! Seek a safe
shelter inside a building or vehicle.

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

&&

LAT...LON 3027 8208 3040 8215 3053 8191 3032 8183
TIME...MOT...LOC 1902Z 249DEG 5KT 3035 8203

SHASHY
Special weather statement, Jul 3, 3:06 PM EDT, 28 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
306 PM EDT Wed Jul 3 2019

FLZ025-032-037-031930-
Inland Duval FL-Putnam FL-Clay FL-
306 PM EDT Wed Jul 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL PUTNAM...CENTRAL
CLAY AND SOUTHWESTERN DUVAL COUNTIES UNTIL 330 PM EDT...

* At 306 PM EDT, National Weather Service meteorologists were
  tracking strong thunderstorms along a line extending from near
  Cecil Field to near George's Lake. Movement was north-northeast at
  5 mph.

* Winds in excess of 45 mph possible with these storms.

* Locations impacted include...
  Middleburg, Cecil Field, Doctors Inlet, Lakeside, Oakleaf
  Plantation, Bellair-Meadowbrook Terrace, Penney Farms, Asbury Lake
  and Jacksonville Heights.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

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

&&

LAT...LON 3030 8175 2983 8173 2980 8194 3029 8191
TIME...MOT...LOC 1906Z 197DEG 17KT 3023 8184 2986 8185

SHASHY
Special weather statement, Jul 3, 3:20 PM EDT, 14 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
320 PM EDT Wed Jul 3 2019

GAZ153-165-032000-
Inland Glynn GA-Inland Camden GA-
320 PM EDT Wed Jul 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CAMDEN AND WEST
CENTRAL GLYNN COUNTIES UNTIL 400 PM EDT...

* At 319 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm near Woodbine, moving east at 10
  mph.

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

* Locations impacted include...
  Woodbine, Waverly and Tarboro.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm. If
you can hear thunder, you are close enough to be struck! Seek a safe
shelter inside a building or vehicle.

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

&&

LAT...LON 3098 8165 3094 8186 3104 8188 3115 8179
      3116 8177 3117 8178 3128 8169 3115 8163
TIME...MOT...LOC 1919Z 267DEG 7KT 3100 8181

SHASHY
Local storm report, Jul 3, 3:32 PM EDT, 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 3:02 PM EDTSpecial Weather StatementJAXBaker43 min
Jul 3, 3:06 PM EDTSpecial Weather StatementJAXClay24 min
Jul 3, 3:19 PM EDTSevere Thunderstorm WarningJAXDuval41 min
Jul 3, 3:52 PM EDTSevere Thunderstorm WarningJAXDuval38 min
Jul 3, 3:58 PM EDTHeat AdvisoryJAXAlachua, Baker, Bradford, Duval, Flagler, Gilchrist and 4 more25 hr
Jul 3, 4:04 PM EDTAreal Flood AdvisoryJAXDuval86 min
Jul 3, 4:06 PM EDTSevere Thunderstorm WarningJAXDuval, Nassau39 min
Jul 3, 4:25 PM EDTSevere Thunderstorm WarningJAXDuval28 min
Jul 3, 4:34 PM EDTSpecial Weather StatementJAXNassau41 min
Jul 3, 4:37 PM EDTSpecial Weather StatementJAXPutnam23 min
Jul 3, 4:59 PM EDTSpecial Weather StatementJAXPutnam46 min
Jul 3, 5:02 PM EDTSpecial Weather StatementJAXSaint Johns28 min
Jul 3, 5:16 PM EDTSpecial Weather StatementJAXColumbia29 min
Jul 3, 5:26 PM EDTSpecial Weather StatementJAXAlachua34 min
Jul 3, 5:37 PM EDTSpecial Weather StatementJAXHamilton38 min
Jul 3, 5:51 PM EDTSpecial Weather StatementJAXColumbia39 min
Jul 3, 5:53 PM EDTSpecial Weather StatementJAXGilchrist37 min
Jul 3, 5:56 PM EDTAreal Flood AdvisoryJAXColumbia, Hamilton2 hr
Jul 3, 5:58 PM EDTSevere Thunderstorm WarningJAXAlachua, Columbia47 min
Jul 3, 6:10 PM EDTSpecial Weather StatementJAXSuwannee35 min
Jul 3, 6:25 PM EDTSpecial Weather StatementJAXUnion35 min
Jul 3, 6:39 PM EDTSpecial Weather StatementJAXSuwannee36 min
Jul 3, 6:44 PM EDTAreal Flood AdvisoryJAXSuwannee91 min
Jul 3, 6:54 PM EDTSevere Thunderstorm WarningJAXSuwannee36 min
Jul 3, 7:05 PM EDTSpecial Weather StatementJAXGilchrist40 min
Jul 3, 7:25 PM EDTSpecial Weather StatementJAXMarion35 min
Jul 3, 7:30 PM EDTSpecial Weather StatementJAXSuwannee30 min
Jul 2, 8:27 PM EDTSpecial Weather StatementJAXCharlton33 min
Jul 2, 9:24 PM EDTSpecial Weather StatementJAXCharlton36 min
Jul 3, 2:06 PM EDTSpecial Weather StatementJAXWare24 min
Jul 3, 2:25 PM EDTSpecial Weather StatementJAXBrantley35 min
Jul 3, 2:31 PM EDTSpecial Weather StatementJAXWare44 min
Jul 3, 2:48 PM EDTSpecial Weather StatementJAXCamden27 min
Jul 3, 2:56 PM EDTSpecial Weather StatementJAXCoffee34 min
Jul 3, 3:20 PM EDTSpecial Weather StatementJAXBrantley40 min
Jul 3, 3:47 PM EDTSpecial Weather StatementJAXCoffee43 min
Jul 3, 3:49 PM EDTSpecial Weather StatementJAXCamden41 min

Nearby

Severe Thunderstorm Warnings in Florida, 2019Every severe thunderstorm warning in 2019

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.