Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Tallahassee, FL

July 5, 2017Liberty County, Florida

NWS Tallahassee, FL issued this special weather statement at Jul 5, 2017, 4:13 PM EDT for Liberty County, Florida. It was in force for 32 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: Jul 5, 2017, 4:13 PM EDT (20:13 UTC)
Expired: Jul 5, 2017, 4:45 PM EDT
In force: 32 min
Issued by: NWS Tallahassee, FL

County Liberty County, FL

The radar

The Tallahassee radar (KTLH), 56 km from the middle of the area, began a volume at 20:15 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.2 hours before the alert went out and 58 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: 731 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 1024 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 5, 2:31 PM EDT, 1 hour 42 minutes earlier.

Area forecast discussion, Jul 5, 2:31 PM EDT, 1 hour 42 minutes before

Area Forecast Discussion
National Weather Service Tallahassee FL
231 PM EDT Wed Jul 5 2017

.NEAR TERM [Through Tonight]...

Isolated to scattered convection remains possible this afternoon
along the sea breeze across the panhandle and big bend with a few
storms also possible in portions of south central Georgia. Activity
will dissipate rapidly around sunset with overnight low mainly in
the middle 70s.

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

A surface ridge axis will be aligned east-west over or just south of
the area through the period. The deep layer dry air evident on
today's water vapor imagery will remain in place as well, keeping PW
below seasonal levels and helping to suppress convective
coverage. Therefore, PoPs will be below normal and temps will
remain above normal. A front will approach from the northwest on
Friday, slightly increasing PoPs across our northwest zones. While
overall convective coverage will be below normal, dry air aloft
will support some stronger wind gusts in any storms that do form
each afternoon.

.LONG TERM [Saturday Through Wednesday]...

A weak upper level trough will be over the region for most of this
period with the surface ridge axis south of the area. A front will
slip into the area over the weekend and then dissipate. These
features will result in PoPs returning to more seasonal levels (40-
50%). Daytime highs will be in the lower 90s with overnight lows in
the lower to mid 70s.

&&

.AVIATION [Through 18Z Thursday]...

[Through 18z Thursday] VFR conditions are expected to prevail.
Isolated to scattered convection is possible near ECP, TLH, and VLD
this afternoon, but the chance appears too low to mention anything
in the TAF at this time.

&&

.MARINE...

Light winds and seas are expected to prevail through the period
outside of any showers and thunderstorms.

&&

.FIRE WEATHER...

Dispersion indices may be high Thursday afternoon for parts of
southwest Georgia. There are no other fire weather concerns.

&&

.HYDROLOGY...

Shower and thunderstorm activity will remain isolated to scattered
in nature for the next couple of days, increasing somewhat for the
weekend and early next week. There will be minimal changes for
flooding and area rivers and streams will remain below flood
stage.

&&

.PRELIMINARY POINT TEMPS/POPS...

Tallahassee   75  95  74  95  74 /  10  30  10  20  10
Panama City   78  90  78  89  78 /   0  20  10  20  10
Dothan        75  95  74  93  74 /   0  20  10  20  20
Albany        75  95  74  94  74 /  10  20  10  20  20
Valdosta      73  96  73  95  73 /  20  30  10  20  10
Cross City    74  94  74  94  74 /  10  20  10  20  10
Apalachicola  76  91  77  91  77 /   0  20  10  10  10

&&

.TAE WATCHES/WARNINGS/ADVISORIES...

FL...None.
GA...None.
AL...None.
GM...None.

&&

NEAR TERM...DVD
SHORT TERM...Wool
LONG TERM...Wool
AVIATION...DVD
MARINE...Wool
FIRE WEATHER...Weston
HYDROLOGY...Wool

In the hours before

Special weather statement, Jul 5, 2:53 PM EDT, 1 hour 20 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
253 PM EDT WED JUL 5 2017

FLZ034-051930-
Inland Dixie FL-
253 PM EDT WED JUL 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN DIXIE COUNTY UNTIL
330 PM EDT...

At 253 PM EDT, National Weather Service doppler radar indicated a a
strong thunderstorm 9 miles west of Bell, moving north at 10 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Fletcher and Guaranto Springs.

LAT...LON 2977 8295 2974 8294 2973 8295 2972 8294
      2972 8296 2970 8294 2970 8296 2968 8296
      2966 8295 2975 8315 2982 8320 2982 8295
      2980 8292
TIME...MOT...LOC 1853Z 178DEG 8KT 2979 8301

42-DVD

Special weather statement, Jul 5, 3:17 PM EDT, 56 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
317 PM EDT WED JUL 5 2017

FLZ034-134-052000-
Coastal Dixie FL-Inland Dixie FL-
317 PM EDT WED JUL 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DIXIE COUNTY UNTIL
400 PM EDT...

At 316 PM EDT, National Weather Service doppler radar indicated a a
strong thunderstorm near Chiefland, moving northwest at 15 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Fowlers Bluff, Suwannee, Yellow Jacket, Old Town and Fanning Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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.

&&

LAT...LON 2932 8323 2967 8296 2964 8296 2961 8297
      2958 8295 2959 8294 2956 8295 2954 8298
      2952 8297 2952 8298 2947 8298 2943 8302
      2940 8302 2937 8307 2935 8306 2934 8310
      2932 8312 2932 8314 2930 8316
TIME...MOT...LOC 1916Z 130DEG 13KT 2940 8291

42-DVD

Special weather statement, Jul 5, 4:13 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
413 PM EDT WED JUL 5 2017

FLZ026-027-127-052045-
Liberty FL-Coastal Wakulla FL-Inland Wakulla FL-
413 PM EDT WED JUL 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN WAKULLA AND SOUTHERN
LIBERTY COUNTIES UNTIL 445 PM EDT...

At 413 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorms along a line extending from 14 miles east of
Stonemill Creek to 14 miles southwest of Crawfordville. Movement was
north at 10 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Orange, Sopchoppy, East Camp, Jewel Fire Tower, Vilas, Jensen Place,
Central City, Sanborn, Owens Bridge, Poplar Camp, Smith Creek,
Estiffanulga, Kern, Wilma, Nixon Garden and Twin Pole.

LAT...LON 3003 8499 3028 8506 3029 8505 3030 8506
      3031 8503 3032 8504 3031 8479 3030 8471
      3030 8440 3001 8449
TIME...MOT...LOC 2013Z 179DEG 8KT 3011 8494 3009 8456

42-DVD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 2:53 PM EDT	Special Weather Statement	TAE	Gilchrist	37 min
Jul 5, 3:17 PM EDT	Special Weather Statement	TAE	Dixie	43 min
Jul 5, 4:26 PM EDT	Special Weather Statement	TAE	Lafayette	34 min
Jul 5, 4:30 PM EDT	Severe Thunderstorm Warning	TAE	Lafayette	45 min
Jul 5, 4:45 PM EDT	Special Weather Statement	TAE	Wakulla	30 min
Jul 5, 5:10 PM EDT	Special Weather Statement	TAE	Leon	50 min
Jul 5, 5:34 PM EDT	Severe Thunderstorm Warning	TAE	Leon, Wakulla	41 min
Jul 5, 6:13 PM EDT	Special Weather Statement	TAE	Leon	32 min
Jul 5, 6:26 PM EDT	Special Weather Statement	TAE	Jackson	34 min
Jul 5, 6:31 PM EDT	Special Weather Statement	TAE	Lanier	29 min

Nearby

Special Weather Statements in Florida, 2017 Every special weather statement in 2017

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.