Alert archive / Florida / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 129, NWS Tallahassee, FL

June 28, 2013Gadsden County, Jefferson County, Leon County, Florida; Grady County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 28, 2013, 6:53 PM EDT for Gadsden County, Jefferson County, Leon County, Florida; Grady County, Georgia. It was in force for 52 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 28, 2013, 6:53 PM EDT (22:53 UTC)
Expired: Jun 28, 2013, 7:45 PM EDT
In force: 52 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

Counties Gadsden County, FL, Jefferson County, FL, Leon County, FL, Grady County, GA

The radar

The Tallahassee radar (KTLH), 29 km from the middle of the area, began a volume at 22:53 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

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 0 minutes after it went out.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 28, 12:26 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.9 hours before the alert went out and 27 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: 3527 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 565 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

113 
WUUS52 KTAE 282253
SVRTAE
FLC039-065-073-GAC131-282345-
/O.NEW.KTAE.SV.W.0129.130628T2253Z-130628T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
653 PM EDT FRI JUN 28 2013

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN GADSDEN COUNTY IN FLORIDA...
  NORTHWESTERN JEFFERSON COUNTY IN FLORIDA...
  NORTHEASTERN LEON COUNTY IN FLORIDA...
  SOUTHERN GRADY COUNTY IN SOUTHWEST GEORGIA...

* UNTIL 745 PM EDT

* AT 648 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH.  THIS STORM WAS LOCATED NEAR CONCORD...AND MOVING EAST AT 35
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO      
  ORCHARD POND...LAKE JACKSON...LAKE IAMONIA...MACLAY STATE          
  GARDENS...KILLEARN LAKES...TOM BROWN PARK...CHAIRES...BAUM...      
  MICCOSUKEE...CONCORD AND CAPITOLA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WIND DAMAGE WILL OCCUR WELL AHEAD OF ANY RAIN OR LIGHTNING. DO NOT
WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.

&&

LAT...LON 3053 8398 3052 8404 3046 8404 3042 8407
      3047 8441 3069 8441 3069 8438 3074 8438
      3070 8410 3068 8408 3067 8408 3067 8400
      3061 8401
TIME...MOT...LOC 2253Z 292DEG 29KT 3061 8433

$$

38-GODSEY

1 follow-up statement

436 
WWUS52 KTAE 282318
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
718 PM EDT FRI JUN 28 2013

FLC039-065-073-GAC131-282328-
/O.CAN.KTAE.SV.W.0129.000000T0000Z-130628T2345Z/
GRADY GA-LEON FL-JEFFERSON FL-GADSDEN FL-
718 PM EDT FRI JUN 28 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GADSDEN...WEST
CENTRAL JEFFERSON...NORTHEASTERN LEON AND SOUTHERN GRADY COUNTIES IS
CANCELLED...

RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN
TALLAHASSEE AT (8 5 0) 9 4 2 8 8 3 3. OR...YOU MAY CONTACT THE
NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT.
THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 3053 8398 3052 8404 3046 8404 3042 8407
      3047 8441 3069 8441 3069 8438 3074 8438
      3070 8410 3068 8408 3067 8408 3067 8400
      3061 8401
TIME...MOT...LOC 2318Z 292DEG 29KT 3053 8411

$$

38-GODSEY

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 28, 4:07 PM EDT, 2 hours 46 minutes earlier.

Area forecast discussion, Jun 28, 4:07 PM EDT, 2 hours 46 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
407 PM EDT Fri Jun 28 2013

...Severe Storms Possible into this evening...

.NEAR TERM [Through Tonight]...
Very unstable airmass this afternoon is fueling widespread
convection across much of the forecast area. With the Big Bend
worked over earlier today, the primary focus for severe weather
into this evening will be across SE Alabama, SW Georgia, and
possibly the Florida Panhandle. Most of the activity has been of
the pulse severe variety. However, a southward moving outflow
boundary moving into SE Alabama is providing a focus for slightly
more organized activity. Damaging wind gusts will continue to be
the primary concern. While some of the hi-res guidance suggests
more strong storms overnight, the current widespread activity
should the stabilize the atmosphere significantly by late
evening. This should reduce the coverage and intensity of any
overnight convection.

&&

.SHORT TERM [Saturday Through Sunday Night]...
Upper trough axis (currently along the eastern seaboard) will
retrograde to the west tonight into Saturday, with the axis
ending up west of the forecast area. In addition, a frontal
boundary will drop south into the area by Saturday and stall
across SE Alabama and the Florida Panhandle. This will create a
favorable pattern for convection, especially east of the
Apalachicola/Chattahoochee Rivers, with a very moist airmass and
weak shortwave energy rounding the base of the trough. As with
Friday morning, the convection may get an early start along the
coast, so will have relatively high PoPs in place throughout the
day. Conditions will change little by Sunday, with the eastern
half of the area favored once again.

&&

.LONG TERM [Monday through Friday]...
Unseasonably deep trough will be in place over the eastern half of
the country through next week. This will keep moist and deep
southwesterly flow across the forecast area with enhanced rain
chances for most of the week. Periods of more widespread rain will
likely be governed by timing of weak upper/lower level features,
which are difficult to predict this far out. Therefore, will
continue with a general forecast of likely PoPs for the eastern
half of area early in the week, with the higher PoPs spreading
west by midweek as the upper level trough slowly retrogrades.

&&

.AVIATION [Through 18Z Saturday]...
Scattered thunderstorms are currently firing in our Georgia and
Alabama counties, putting ABY, DHN, and VLD at the greatest risk for
reduced visibility this afternoon.  IFR conditions could occur in
these storms.  Also, around 21Z today, the line of thunderstorms
currently in Alabama will move into our region and impact DHN and
ABY in the early evening hours. This line will contain strong to
potentially severe wind gusts, frequent lightning, and heavy rain.
After the thunderstorms pass through, patchy fog is possible at
all terminals early tomorrow morning around sunset. More scattered
thunderstorms are possible tomorrow.

&&

.MARINE...
Southwesterly flow will be on the increase through the weekend as
the Bermuda high strengthens over the western Atlantic and a
frontal boundary approaches the northern Gulf Coast. Expect
exercise caution conditions to develop overnight and continue
through most of the weekend. Brief periods of advisory level
winds will be possible late Saturday into Sunday.

&&

.FIRE WEATHER...
Red flag conditions are not expected due to above average relative
humidity values throughout the period.

&&

.HYDROLOGY...A wet weather pattern will be in place through the
weekend and into early next week. Widespread 2 to 4 inch rainfall
amounts are anticipated through Monday, with isolated higher
amounts. With no area rivers in flood or action stage, no
river flooding is expected. However, locally heavy rainfall may
cause flooding of some urban and/or low-lying areas.

&&

.PRELIMINARY POINT TEMPS/POPS...
Tallahassee   74  90  74  89  72 / 70  70  50  70  40
Panama City   79  87  79  87  77 / 70  60  50  60  30
Dothan        75  92  72  91  71 / 80  60  40  50  30
Albany        73  91  73  89  71 / 80  60  40  60  40
Valdosta      75  89  73  88  72 / 70  70  50  70  50
Cross City    75  88  74  88  73 / 40  70  60  70  50
Apalachicola  79  86  79  86  77 / 70  60  60  60  40

&&

.TAE WATCHES/WARNINGS/ADVISORIES...
FL...None.
GA...None.
AL...None.
GM...None.

&&

NEAR TERM...Godsey/Lahr
SHORT TERM...Camp
LONG TERM...Camp
AVIATION...Godsey/Lahr
MARINE...Godsey/Camp
FIRE WEATHER...Godsey/Lahr
HYDROLOGY...Camp

In the hours before

Local storm report, Jun 28, 5:19 PM EDT, 1 hour 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
519 PM EDT FRI JUN 28 2013

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

0435 PM     TSTM WND DMG     4 NNE GENEVA            31.09N 85.85W
06/28/2013                   GENEVA             AL   EMERGENCY MNGR

            TREES DOWN ACROSS 4 VEHICLES ON THOMPSON DRIVE.

&&

HARRIGAN

Special weather statement, Jun 28, 5:23 PM EDT, 1 hour 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
523 PM EDT FRI JUN 28 2013

FLZ010-011-282230-
JACKSON FL-WASHINGTON FL-
423 PM CDT FRI JUN 28 2013

...SIGNIFICANT WEATHER ADVISORY IN EFFECT FOR JACKSON AND WASHINGTON
COUNTIES IN THE FLORIDA PANHANDLE...

* UNTIL 530 PM CDT

AT 420 PM CDT...THE NATIONAL WEATHER SERVICE HAS DETECTED STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES SOUTHEAST OF
COTTONWOOD TO CHIPLEY...OR ALONG A LINE EXTENDING FROM GRANGEBURG TO
CHIPLEY...MOVING EAST AT 30 MPH.

THESE STORMS WILL BE NEAR...
  MARIANNA BY 450 PM CDT.

WINDS 50 TO 55 MPH ARE EXPECTED WITH THESE STORMS.

REPORT SIGNIFICANT WEATHER TO THE NATIONAL WEATHER SERVICE AT (8 5 0)
9 4 2 8 8 3 3. OR...CONTACT LAW ENFORCEMENT.

&&

LAT...LON 3075 8562 3089 8558 3094 8553 3096 8553
      3099 8549 3100 8515 3093 8497 3091 8496
      3089 8496 3064 8539 3064 8541 3074 8566
TIME...MOT...LOC 2124Z 287DEG 27KT 3098 8523 3080 8552

38-GODSEY

Local storm report, Jun 28, 5:25 PM EDT, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
525 PM EDT FRI JUN 28 2013

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

0430 PM     TSTM WND DMG     ESE BELLWOOD            31.17N 85.79W
06/28/2013                   GENEVA             AL   EMERGENCY MNGR

            POWERLINES AND TREES DOWN NEAR HIGHWAY 85.

&&

HARRIGAN

Local storm report, Jun 28, 5:28 PM EDT, 1 hour 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
528 PM EDT FRI JUN 28 2013

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

0440 PM     TSTM WND DMG     3 NNW HARTFORD          31.15N 85.72W
06/28/2013                   GENEVA             AL   EMERGENCY MNGR

            TREES DOWN NEAR COUNTY ROAD 47.

&&

HARRIGAN

Local storm report, Jun 28, 6:06 PM EDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
606 PM EDT FRI JUN 28 2013

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

0520 PM     TSTM WND DMG     1 W DAWSON              31.77N 84.46W
06/28/2013                   TERRELL            GA   911 CALL CENTER

            TREES DOWN IN MULTIPLE LOCATIONS THROUGHOUT THE COUNTY
            INCLUDING WEST HIGHWAY 82 OUTSIDE OF DAWSON.

&&

HARRIGAN

Local storm report, Jun 28, 6:15 PM EDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
615 PM EDT FRI JUN 28 2013

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

0553 PM     TSTM WND DMG     FAIRCHILD               30.82N 84.91W
06/28/2013                   SEMINOLE           GA   911 CALL CENTER

            MULTIPLE TREES DOWN COUNTYWIDE.

&&

HARRIGAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 3:01 AM EDT	Special Weather Statement	TAE	Gadsden	29 min
Jun 28, 3:29 AM EDT	Special Weather Statement	TAE	Gadsden	46 min
Jun 28, 3:43 AM EDT	Severe Thunderstorm Warning	TAE	Gadsden, Liberty	47 min
Jun 28, 4:09 AM EDT	Severe Thunderstorm Warning	TAE	Leon, Wakulla	66 min
Jun 28, 6:52 AM EDT	Special Weather Statement	TAE	Jackson	38 min
Jun 28, 8:11 AM EDT	Special Marine Warning	TAE		64 min
Jun 28, 10:17 AM EDT	Areal Flood Advisory	TAE	Taylor	3 hr
Jun 28, 10:38 AM EDT	Special Weather Statement	TAE	Taylor	52 min
Jun 28, 11:05 AM EDT	Special Weather Statement	TAE	Jefferson	40 min
Jun 28, 11:24 AM EDT	Severe Thunderstorm Warning	TAE	Jefferson, Madison, Taylor	51 min
Jun 28, 5:23 PM EDT	Special Weather Statement	TAE	Jackson	67 min
Jun 28, 5:45 PM EDT	Severe Thunderstorm Warning	TAE	Jackson	45 min
Jun 28, 6:13 PM EDT	Severe Thunderstorm Warning	TAE	Gadsden	47 min
Jun 27, 9:17 PM EDT	Severe Thunderstorm Warning	TAE	Clay, Quitman	43 min
Jun 27, 10:38 PM EDT	Severe Thunderstorm Warning	TAE	Lee, Terrell	37 min
Jun 27, 11:27 PM EDT	Severe Thunderstorm Warning	TAE	Baker, Dougherty, Mitchell	48 min
Jun 27, 11:43 PM EDT	Severe Thunderstorm Warning	TAE	Colquitt, Mitchell	32 min
Jun 28, 12:13 AM EDT	Severe Thunderstorm Warning	TAE	Colquitt, Mitchell	32 min
Jun 28, 12:56 AM EDT	Special Weather Statement	TAE	Thomas	34 min
Jun 28, 1:42 PM EDT	Special Weather Statement	TAE	Thomas	48 min
Jun 28, 1:58 PM EDT	Special Weather Statement	TAE	Grady	47 min
Jun 28, 2:03 PM EDT	Severe Thunderstorm Warning	TAE	Grady	42 min
Jun 28, 2:08 PM EDT	Special Weather Statement	TAE	Baker, Mitchell	52 min
Jun 28, 2:25 PM EDT	Special Weather Statement	TAE	Miller	50 min
Jun 28, 2:31 PM EDT	Severe Thunderstorm Warning	TAE	Decatur, Miller, Seminole	29 min
Jun 28, 2:44 PM EDT	Special Weather Statement	TAE	Tift	46 min
Jun 28, 2:49 PM EDT	Severe Thunderstorm Warning	TAE	Thomas	41 min
Jun 28, 2:53 PM EDT	Severe Thunderstorm Warning	TAE	Berrien, Cook, Tift	52 min
Jun 28, 3:07 PM EDT	Special Weather Statement	TAE	Colquitt	53 min
Jun 28, 3:44 PM EDT	Special Weather Statement	TAE	Seminole	46 min
Jun 28, 4:35 PM EDT	Special Weather Statement	TAE	Randolph	40 min
Jun 28, 4:46 PM EDT	Severe Thunderstorm Warning	TAE	Randolph	29 min
Jun 28, 5:12 PM EDT	Severe Thunderstorm Warning	TAE	Calhoun, Early, Miller, Seminole	63 min
Jun 28, 5:19 PM EDT	Severe Thunderstorm Warning	TAE	Lee, Terrell	41 min
Jun 28, 5:55 PM EDT	Severe Thunderstorm Warning	TAE	Baker, Decatur, Miller	50 min

Nearby

Severe Thunderstorm Warnings in Florida, 2013 Severe Thunderstorm Warnings in Georgia, 2013 Every severe thunderstorm warning in 2013

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.