Alert archive / Florida / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 69, NWS Jacksonville, FL

June 4, 2019Putnam County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 4, 2019, 4:12 PM EDT for Putnam County, Florida. It was in force for 24 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
Jun 4, 2019, 4:12 PM EDT (20:12 UTC)
Expired
Jun 4, 2019, 4:36 PM EDT
In force
24 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Putnam County, FL

The radar

The Jacksonville radar (KJAX), 97 km from the middle of the area, began a volume at 20:12 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, 8.2 hours before the alert went out and 99 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 2019-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 802 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 2019-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.193958Sfc1 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
802 J/kg
Mixed-layer CIN
-112 J/kg
Mixed-layer LCL
1483 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 Jun 4, 2:35 PM EDT, 1 hour 37 minutes earlier.

Area forecast discussion, Jun 4, 2:35 PM EDT, 1 hour 37 minutes before
Area Forecast Discussion
National Weather Service Jacksonville FL
235 PM EDT Tue Jun 4 2019

.NEAR TERM.../thru Wednesday/...
Upper ridge continues across southeastern U.S., with a weak
shortwave moving ESE across GA/SC this afternoon and Tonight.
Surface trough extends near FL/GA border with deeper convection
and isolated showers S of trough. Sea breezes are moving well
inland...with faster westward movement of east coast sea breeze
further S where low-level winds are weaker and more southerly.
Hi-res model guidance suggests main convective threat over
eastern GA counties with a minimum in precipitation coverage over
north- central FL... somewhat opposite of what radar trends have
been showing. Will go with an evolution with widely scattered
showers/t-storms along the boundaries as seen on satellite...with
greater coverage developing interior areas as sea breezes come
together and merge with surface trough through 00z. Gudance does
suggest convection may hang around through at least 06z...so will
be fairly slow to diminish precipitation coverage through the
evening. Environment is favorable for cold downdrafts and 40-60mph
downburst winds from more intense cells that develop. Best chance
for strong/isolated severe will be along and just E of east coast
sea breeze where dew points (and thus instability) will be higher
and deep layer shear a bit stronger...30-35 kts. Low temperature
forecast Tonight is supported by latest consensus guidance.

For Wednesday...Upper ridge is maintained over the area...with
another possible short wave moving across SC/GA...could again see
scattered afternoon showers/t-storms...with greater coverage se
GA compared to ne FL. Consensus guidance supports high
temperatures in the upper 80s coast...lower 90s I-95 corridor...
mid 90s further inland.

.SHORT TERM.../Wednesday Night thru Thursday night/...
Upper ridge continues over the area Thursday as upper level system
moves over Southern Plains...then begins to break down Thursday
night as upper-level system moves eastward toward the western Gulf
Coast region. Expecting scattered sea breeze showers/t-storms
with greatest coverage during the afternoon...but continuing thru
the evening. Temperatures will remain a little above normal.

.LONG TERM.../Friday thru Monday/...
Pattern changes during this period as upper system moves ENE
across Gulf Coast and TN Valley regions through the weekend...
becoming more of an open upper trough moving eastward across the
Southeastern U.S. late Sunday and Monday. This should lead to a
period of not-as-hot temperatures and increased rain chances.
Model blend suggests 80-90 POP by Sun/Mon, but uncertainty of
pattern evolution leads me to reduce that some to the 50-60
percent range. Near or slightly above normal temperatures are
expected during this period.

&&

.AVIATION...
Scattered showers and storms were developing across northeast
Florida early this afternoon south of a frontal boundary near the
FL/GA border. Showers and storms will impact many of the TAF sites
this afternoon into the early evening, with restrictions likely.
Gusty winds with wind shifts are expected due to outflow
boundaries from storms. The overall wind flow will be out of the
southeast at 10-15 knots with higher gusts at KSGJ and KSSI.

&&

.MARINE...High pressure will remain east of the waters, while a
weak surface trough remains over southern GA. The result will be
light to moderate south to southwest flow and low seas through
the week.

Rip Currents: Low risk Wed se GA, moderate risk ne FL.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  71  95  72  92 /  70  50  30  50
SSI  77  88  77  89 /  40  20  20  40
JAX  73  93  74  93 /  40  30  10  50
SGJ  74  88  74  89 /  20  20  10  40
GNV  71  94  72  93 /  40  30  10  30
OCF  71  94  72  92 /  50  30  20  30

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...None.
GA...None.
AM...None.
&&

Wolf/Kennedy/Bricker

In the hours before

Special weather statement, Jun 4, 3:29 PM EDT, 43 minutes before
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Special weather statement, Jun 4, 3:34 PM EDT, 38 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
334 PM EDT Tue Jun 4 2019

FLZ025-125-042015-
Inland Duval FL-Coastal Duval FL-
334 PM EDT Tue Jun 4 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DUVAL COUNTY UNTIL 415 PM
EDT...

* At 333 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm over Riverside, or over
  Jacksonville, moving southeast at 10 mph.

* Small hail, winds in excess of 45 mph, and minor flooding due to
  heavy rainfall is possible with this storm.

* Locations impacted include...
  Jacksonville, Arlington, Normandy, Riverside, San Marco and
  Tallyrand.

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 8177 3041 8174 3038 8155 3026 8159
TIME...MOT...LOC 1933Z 295DEG 8KT 3034 8169

23
Special weather statement, Jun 4, 3:45 PM EDT, 27 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
345 PM EDT Tue Jun 4 2019

GAZ136-042030-
Wayne GA-
345 PM EDT Tue Jun 4 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL WAYNE COUNTY UNTIL 430 PM
EDT...

* At 344 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm over Gardi. This storm was nearly
  stationary.

* Penny size hail and wind gusts of 50 to 55 mph possible with this
  storm.

* Locations impacted include...
  Jesup, Gardi, Doctortown and Broadhurst.

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

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 3165 8182 3166 8181 3165 8180 3163 8179
      3163 8177 3161 8177 3161 8175 3160 8175
      3161 8174 3158 8170 3156 8170 3154 8167
      3151 8166 3149 8164 3143 8195 3157 8194
      3169 8186
TIME...MOT...LOC 1944Z 239DEG 3KT 3154 8182

MCGINNIS
Local storm report, Jun 4, 4:06 PM EDT, 6 minutes before
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Special weather statement, Jun 4, 4:08 PM EDT, 4 minutes before
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Local storm report, Jun 4, 4:11 PM EDT, 1 minute before
PRELIMINARY LOCAL STORM REPORT
National Weather Service Jacksonville FL
411 PM EDT TUE JUN 4 2019

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

0315 PM     HAIL             MANDARIN                30.15N 81.64W
06/04/2019  E0.50 INCH       DUVAL              FL   BROADCAST MEDIA

            HAIL ESTIMATED TO BE AROUND HALF INCH IN THE MANDARIN
            AREA. TIME GIVEN BASED ON RADAR.

&&

PPETERS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 2:10 PM EDTSpecial Weather StatementJAXDuval35 min
Jun 4, 2:20 PM EDTSpecial Weather StatementJAXNassau25 min
Jun 4, 2:39 PM EDTSpecial Weather StatementJAXNassau51 min
Jun 4, 2:52 PM EDTSpecial Weather StatementJAXDuval38 min
Jun 4, 3:00 PM EDTSevere Thunderstorm WarningJAXNassau45 min
Jun 4, 3:03 PM EDTSpecial Marine WarningJAX87 min
Jun 4, 3:11 PM EDTSpecial Weather StatementJAXSaint Johns49 min
Jun 4, 3:29 PM EDTSpecial Weather StatementJAXBradford46 min
Jun 4, 3:34 PM EDTSpecial Weather StatementJAXDuval41 min
Jun 4, 4:08 PM EDTSpecial Weather StatementJAXPutnam52 min
Jun 4, 4:23 PM EDTSpecial Weather StatementJAXMarion52 min
Jun 4, 4:27 PM EDTSpecial Weather StatementJAXMarion48 min
Jun 4, 5:15 PM EDTSpecial Weather StatementJAXPutnam45 min
Jun 4, 5:17 PM EDTSpecial Weather StatementJAXMarion43 min
Jun 4, 5:23 PM EDTSevere Thunderstorm WarningJAXMarion52 min
Jun 4, 5:29 PM EDTSpecial Weather StatementJAXBaker46 min
Jun 4, 6:02 PM EDTSpecial Weather StatementJAXAlachua43 min
Jun 4, 6:33 PM EDTSpecial Weather StatementJAXAlachua42 min
Jun 4, 6:48 PM EDTAreal Flood AdvisoryJAXAlachua3 hr
Jun 4, 7:20 PM EDTAreal Flood AdvisoryJAXAlachua, Marion3 hr
Jun 4, 2:34 PM EDTSpecial Weather StatementJAXCamden41 min
Jun 4, 2:41 PM EDTSpecial Weather StatementJAXWayne49 min
Jun 4, 2:43 PM EDTSpecial Weather StatementJAXBrantley47 min
Jun 4, 3:09 PM EDTSevere Thunderstorm WarningJAXCamden36 min
Jun 4, 3:13 PM EDTSevere Thunderstorm WarningJAXWayne32 min
Jun 4, 3:31 PM EDTSevere Thunderstorm WarningJAXWayne29 min
Jun 4, 3:45 PM EDTSpecial Weather StatementJAXWayne45 min
Jun 4, 3:54 PM EDTSevere Thunderstorm WarningJAXWayne36 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.