Alert archive / Florida / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 88, NWS Tallahassee, FL

June 25, 2018Jackson County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 25, 2018, 6:42 PM CDT for Jackson County, Florida. It was in force for 33 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: Jun 25, 2018, 6:42 PM CDT (23:42 UTC)
Expired: Jun 25, 2018, 7:15 PM CDT
In force: 33 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Jackson County, FL

The radar

The Tallahassee radar (KTLH), 73 km from the middle of the area, began a volume at 23:42 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.7 hours before the alert went out and 75 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1038 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 1080 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 4 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

537 
WUUS52 KTAE 252342
SVRTAE
FLC063-260015-
/O.NEW.KTAE.SV.W.0088.180625T2342Z-180626T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
642 PM CDT MON JUN 25 2018

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Southeastern Jackson County in the Panhandle of Florida...

* Until 715 PM CDT.

* At 641 PM CDT, a severe thunderstorm was located 11 miles west of
  Chattahoochee, or 12 miles east of Marianna, and is nearly
  stationary.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Sneads, Grand Ridge, Dellwood, Star, Two Egg, Cypress, Alliance and
  Blue Spring.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3085 8515 3087 8500 3086 8494 3085 8493
      3082 8494 3078 8492 3075 8491 3075 8490
      3066 8489 3064 8491 3062 8491 3061 8493
      3061 8515
TIME...MOT...LOC 2341Z 108DEG 4KT 3074 8503 

HAIL...<.75IN
WIND...60MPH
 
$$

WD

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 Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 25, 3:02 PM CDT, 3 hours 40 minutes earlier.

Area forecast discussion, Jun 25, 3:02 PM CDT, 3 hours 40 minutes before

Area Forecast Discussion
National Weather Service Tallahassee FL
402 PM EDT Mon Jun 25 2018

.NEAR TERM [Through Tonight]...

Deep layer ridge will remain in place through tonight. Scattered
showers and thunderstorms this afternoon will continue into the
evening, with the best chance of convection after 00z across the
eastern portion of the CWA based on the influence of the east coast
sea breeze. Convection will decrease for the second half of the
night with the focus for an isolated shower/thunderstorm across the
Gulf. Lows tonight will be in the mid 70s, with upper 70s along the
coast.  TLH low temperature should remain below the record high
minimum temperature of 78 (1914).

.SHORT TERM [Tuesday Through Wednesday Night]...

Our typical wet summer pattern will return going into the short
term. An east-west oriented ridge will sit over the region, allowing
for southerly flow to bring abundant moisture in from the Gulf. As a
result, rain chances will be more widespread with daytime PoPs of 30-
40% for most of the CWA. High temperatures will be in the low-mid
90s and lows in the mid-upper 70s.

.LONG TERM [Thursday Through Monday]...

The generally wet pattern of diurnal showers will continue into the
long term period. Rain chances will be best in the afternoons, with
PoPs ranging 30-50% most days. High temperatures will be in the low-
mid 90s with lows in the mid-upper 70s.

&&

.AVIATION [Through 18Z Tuesday]...

Currently light winds under VFR conditions. Sct SHRA/TSRA are
expected to develop near all terminals this afternoon. Latest
guidance suggests most of the activity starting near the terminals N
and W of KTLH and quickly spreading in coverage S and E. Activity
might linger a bit longer this afternoon near KVLD. Depending on the
amount of rainfall this afternoon patchy fog could be a concern
overnight. Expect conditions in and around any SHRA/TSRA to be
MVFR/IFR.

&&

.MARINE...

Winds will be south to southwest through much of the week with
speeds of 5 to 10 knots. Seas will range from 1 to 2 feet. Scattered
storms are expected each day.

&&

.FIRE WEATHER...

Aside from low dispersion indices, hazardous fire weather
conditions are not expected over the next several days.

&&

.HYDROLOGY...

Widespread flooding is not expected over the next week. With
scattered thunderstorms expected each day though, minor nuisance
flooding such as ponding of water on roadways will be possible.

&&

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not requested. However, spotters are always
encouraged to safely report significant weather conditions when they
occur by calling the office or tweeting us @NWSTallahassee.

&&

.PRELIMINARY POINT TEMPS/POPS...

Tallahassee   75  95  75  92  75 /  30  40  10  40  10
Panama City   78  90  79  89  80 /  10  30  10  20  20
Dothan        75  94  74  92  75 /  20  40  20  40  10
Albany        76  95  76  93  76 /  30  40  30  40  20
Valdosta      73  95  74  93  75 /  40  40  30  40  20
Cross City    74  92  75  90  77 /  50  20  10  30  20
Apalachicola  78  89  78  89  79 /  10  20  10  20  20

&&

.TAE WATCHES/WARNINGS/ADVISORIES...
FL...High Rip Current Risk until 11 PM EDT /10 PM CDT/ this evening
     for Coastal Bay-Coastal Gulf.

GA...None.
AL...None.
GM...None.
&&

NEAR TERM...Fieux
SHORT TERM...Fieux/Skeen
LONG TERM...Fieux/Skeen
AVIATION...Humphreys
MARINE...Fieux
FIRE WEATHER...Harrigan
HYDROLOGY...Fieux

In the hours before

Special weather statement, Jun 25, 3:06 PM CDT, 3 hours 36 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
406 PM EDT MON JUN 25 2018

GAZ142-252030-
Early GA-
406 PM EDT MON JUN 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN EARLY COUNTY UNTIL
430 PM EDT...

At 406 PM EDT, Doppler radar was tracking a strong thunderstorm near
Blakely, moving south at 5 mph.

Winds up to 45 mph are possible with this storm.

Locations impacted include...
Blakely, Colomokee, Cuba, Early Co A/p, Old Damascus and Kolomoki
Mounds Sp.

LAT...LON 3148 8480 3147 8481 3145 8479 3144 8479
      3144 8476 3129 8473 3130 8500 3148 8495
TIME...MOT...LOC 2006Z 001DEG 5KT 3143 8488

WD

Special weather statement, Jun 25, 3:53 PM CDT, 2 hours 49 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
453 PM EDT MON JUN 25 2018

GAZ120-122-252130-
Quitman GA-Randolph GA-
453 PM EDT MON JUN 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN RANDOLPH AND QUITMAN
COUNTIES UNTIL 530 PM EDT...

At 451 PM EDT, Doppler radar was tracking strong thunderstorms near
Cuthbert and 5 miles west of Union, moving northwest around 10 mph.

Wind gusts up to 50 mph are possible with these storms.

Locations impacted include...
Cuthbert, Springvale Station, Hatcher, Morris, Peterson Hill, White
House, Brooksville, Crossroads, Benevolence, Springvale and Wades.

LAT...LON 3198 8504 3198 8501 3197 8495 3195 8496
      3193 8492 3192 8491 3192 8481 3193 8480
      3192 8480 3192 8469 3193 8468 3192 8468
      3192 8460 3183 8460 3179 8470 3172 8496
      3178 8496 3178 8504 3199 8507
TIME...MOT...LOC 2051Z 156DEG 8KT 3181 8482

WD

Special weather statement, Jun 25, 4:02 PM CDT, 2 hours 40 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
502 PM EDT MON JUN 25 2018

FLZ012-112-252145-
Coastal Bay FL-Inland Bay FL-
502 PM EDT MON JUN 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BAY COUNTY UNTIL 545
PM EDT/445 PM CDT/...

At 500 PM EDT/400 PM CDT/, Doppler radar was tracking strong
thunderstorms 11 miles northeast of Lynn Haven and 5 miles northeast
of Vicksburg. The movement of these storms is nearly stationary.

Wind gusts up to 50 mph is possible with these storms along with pea
sized hail.

Locations impacted include...
Nixon, Gainer Spring, Bayhead, Bennett, Youngstown, Cairo, Bayou
George, Majette, Camp Flowers and Recota Beach.

LAT...LON 3044 8549 3041 8539 3027 8539 3020 8540
      3023 8552 3031 8560 3035 8569 3044 8570
TIME...MOT...LOC 2100Z 213DEG 2KT 3031 8548

WD

Special weather statement, Jun 25, 4:13 PM CDT, 2 hours 29 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
513 PM EDT MON JUN 25 2018

FLZ019-252145-
Madison FL-
513 PM EDT MON JUN 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MADISON COUNTY UNTIL
545 PM EDT...

At 512 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Madison, moving west at 5 mph.

Winds up to 40 mph and pea sized hail is possible with this storm.

Locations impacted include...
Madison, Cherry Lake, Lovett, Hamburg, Hanson and Pinetta.

LAT...LON 3044 8339 3046 8350 3052 8360 3065 8357
      3064 8334 3063 8328 3062 8327 3059 8326
      3055 8326 3054 8325 3053 8325
TIME...MOT...LOC 2112Z 077DEG 6KT 3058 8341

WD

Special weather statement, Jun 25, 5:42 PM CDT, 1 hour before

Special Weather Statement
National Weather Service Tallahassee FL
542 PM CDT MON JUN 25 2018

FLZ011>013-252315-
Inland Bay FL-Calhoun FL-Jackson FL-
542 PM CDT MON JUN 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN JACKSON...NORTHEASTERN
BAY AND NORTHERN CALHOUN COUNTIES IN THE PANHANDLE OF FLORIDA UNTIL
615 PM CDT...

At 541 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Marianna, moving north at 20 mph.

Winds up to 45 mph are possible with this storm.

Locations impacted include...
Marianna, Cottondale, Grand Ridge, Altha, Alford, Moose Pond,
Clarksville, Ocheesee, Selman, Fountain, Blue Spring, Union City,
Chipola, Henderson Mill, Camps Head, Dellwood, Star, Alliance,
Blountstown Airport and Compass Lake.

LAT...LON 3057 8546 3057 8544 3078 8543 3084 8536
      3087 8497 3056 8496 3055 8497 3046 8511
      3040 8530 3048 8547
TIME...MOT...LOC 2241Z 157DEG 19KT 3068 8518

WD

Special weather statement, Jun 25, 6:18 PM CDT, 24 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
618 PM CDT MON JUN 25 2018

FLZ011-260000-
Jackson FL-
618 PM CDT MON JUN 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR JACKSON COUNTY UNTIL 700 PM
CDT...

At 617 PM CDT, Doppler radar was tracking a strong thunderstorm near
Marianna, moving northwest at 15 mph.

Wind gusts up to 50 mph and pea sized are possible with this storm.

Locations impacted include...
Marianna, Cottondale, Grand Ridge, Greenwood, Alford, Bascom, Blue
Spring, Union City, Lovedale, Dellwood, Star, Hornsville, Jacobs,
Alliance, Buena Vista, Marianna Municipal A/P, Jacob City,
Kynesville, Ridgetop and Haynes.

LAT...LON 3093 8538 3095 8498 3093 8498 3089 8494
      3061 8505 3061 8517 3057 8518 3056 8520
      3057 8535 3067 8544 3078 8543 3079 8543
      3079 8548 3083 8548
TIME...MOT...LOC 2317Z 135DEG 11KT 3074 8528

WD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 10:11 AM CDT	Rip Current Statement	TAE	Bay, Gulf	12 hr
Jun 25, 4:02 PM CDT	Special Weather Statement	TAE	Bay	43 min
Jun 25, 4:13 PM CDT	Special Weather Statement	TAE	Madison	32 min
Jun 25, 5:42 PM CDT	Special Weather Statement	TAE	Jackson	33 min
Jun 25, 6:18 PM CDT	Special Weather Statement	TAE	Jackson	42 min

Nearby

Severe Thunderstorm Warnings in Florida, 2018 Every severe thunderstorm warning in 2018

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.