Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Tallahassee, FL

August 6, 2018Jefferson County, Leon County, Florida

NWS Tallahassee, FL issued this special weather statement at Aug 6, 2018, 11:01 PM EDT for Jefferson County, Leon County, Florida. It was in force for 44 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: Aug 6, 2018, 11:01 PM EDT (03:01 UTC)
Expired: Aug 6, 2018, 11:45 PM EDT
In force: 44 min
Issued by: NWS Tallahassee, FL

Counties Jefferson County, FL, Leon County, FL

The radar

The Tallahassee radar (KTLH), 41 km from the middle of the area, began a volume at 03:04 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 00:00Z, 3.0 hours before the alert went out and 39 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: 266 J/kg
Mixed-layer CIN: -197 J/kg
Mixed-layer LCL: 1716 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 Aug 6, 7:41 PM EDT, 3 hours 20 minutes earlier.

Area forecast discussion, Aug 6, 7:41 PM EDT, 3 hours 20 minutes before

Area Forecast Discussion
National Weather Service Tallahassee FL
741 PM EDT Mon Aug 6 2018

.UPDATE...

Showers and thunderstorms will dissipate before midnight. No
significant changes were made with the evening update.

&&

.AVIATION [Through 00Z Wednesday]...

Scattered showers and thunderstorms will dissipate before midnight.
VFR conditions are expected outside of thunderstorms but isolated
patchy fog cannot be ruled out in the early morning hours.
Scattered showers and thunderstorms will return tomorrow.

&&

.PREV DISCUSSION [349 PM EDT]...

.NEAR TERM [Through Tonight]...

An upper high pressure system over the southeast states will
persist through tonight while an inverted upper level trough moves
westward over the northeast Gulf of Mexico. A surface ridge of
high pressure extending along the Appalachian Mountains to the
northeast Gulf of Mexico will remain largely in place, but models
are hinting toward a possible weak easterly wave forming late
tonight across northeast gulf. With the approach of the upper
level wave and a sea breeze pushing inland, the ongoing isolated
to scattered afternoon convection will persist throughout the
evening, and then gradually dissipate after midnight mainly across
the inland areas.

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

The inverted upper level trough will continue to move westward
from the northeast Gulf of Mexico to the north central gulf
throughout the day Tuesday. The combination of upper level
impulses associated with the trough moving over the forecast area
on Tuesday, decreasing stability due to strong surface heating and
another sea breeze pushing inland, isolated to scattered showers
and thunderstorms will re-develop early in the day and persist
through much of the day, with coverage decreasing slightly across
the eastern portions of the forecast area by late afternoon. Rain
chances are then a bit lower on Wednesday due to increased
subsidence and drier air beneath a region of high pressure that
moves overhead. With plenty of sunshine each afternoon, high
temperatures will range from 90 to 95 inland areas with heat
indices expected to top out between 101 to 106 degrees.

.LONG TERM [Thursday Through Monday]...

As broad troughing settles in over the eastern CONUS it
sandwiches the local area between it and high pressure to our
south. This brings a period of unsettled weather Thursday and
Friday as a west-southwest flow maintains deep layer moisture and
scattered to numerous showers and thunderstorms develop each day.
A series of shortwave troughs then act to deepen the broader
eastern CONUS trough on Saturday, causing it to dig southward
towards the Gulf Coast where it remains until Monday. This will
continue the pattern of unsettled weather for the local area
straight through the weekend and into early next week. Expect
temperatures to cool somewhat due to the increased coverage of
clouds and rain, with highs in the upper 80s to around 90 degrees.

.MARINE...

Weak high pressure across the southeast states will
gradually shift south over the eastern Gulf of Mexico through
midweek and then persist into the weekend. Favorable marine
conditions throughout the week with light winds and low seas. A
slight uptick in winds and seas can be expected heading into the
weekend.

.FIRE WEATHER...

Surface high pressure will persist across the region
with relative humidity values remaining above critical thresholds.
Isolated to scattered showers and thunderstorm coverages expected
through midweek, with heat indices again climbing to between 100 to
106 Tuesday afternoon. Relative humidity values will remain above
critical thresholds for the next several days, so no red flag
conditions are forecast.

.HYDROLOGY...

The St Marks river at Newport remains in minor flood stage and is
expected to fall below flood stage during the latter half of this
week. The Apalachicola and Ochlockonee rivers will hover in action
stage for the next several days with slow falls expected after
midweek. Though summertime showers and storms in the afternoon
are anticipated, no additional flooding is forecast.

.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   73  93  73  93  74 /  40  40  10  30  10
Panama City   76  92  75  89  76 /  40  50  10  20  20
Dothan        75  93  73  92  73 /  40  40  20  30  10
Albany        76  93  74  92  74 /  50  40  20  30  10
Valdosta      73  92  73  93  74 /  50  30  20  30  10
Cross City    73  92  74  91  75 /  30  20  10  20  10
Apalachicola  77  90  75  88  77 /  40  40  10  20  10

&&

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

UPDATE...McD
NEAR TERM...JP
SHORT TERM...TRC
LONG TERM...TRC
AVIATION...McD
MARINE...JP
FIRE WEATHER...JP
HYDROLOGY...DRJohnson

In the hours before

Local storm report, Aug 6, 9:45 PM EDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
945 PM EDT MON AUG 6 2018

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

0500 PM     TSTM WND DMG     1 SSE WOODVILLE         30.30N 84.24W
08/06/2018                   LEON               FL   EMERGENCY MNGR

            TREE DOWN NEAR THE INTERSECTION OF NATURAL
            WELLS DR AND BLUE WATERS ROAD.

&&

Special weather statement, Aug 6, 9:46 PM EDT, 1 hour 15 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
846 PM CDT MON AUG 6 2018

ALZ066-067-070215-
Dale AL-Henry AL-
846 PM CDT MON AUG 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN DALE AND
NORTHWESTERN HENRY COUNTIES UNTIL 915 PM CDT...

At 846 PM CDT, Doppler radar was tracking a strong thunderstorm near
Texasville, or 11 miles northwest of Abbeville, moving southwest at
10 mph.

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

Locations impacted include...
Bells Crossroads, Skipperville, Echo, Edwin, Roberts Crossroads,
Arguta, Snells Crossroads, Barefield Crossroads, Clopton, Phillips
Crossroads, Ward Bridge, Dykes Crossroads and Bertha.

LAT...LON 3171 8536 3161 8528 3143 8549 3162 8566
      3162 8542 3171 8542
TIME...MOT...LOC 0146Z 053DEG 10KT 3165 8542

42-DVD

Local storm report, Aug 6, 10:19 PM EDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1019 PM EDT MON AUG 6 2018

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

0815 PM     TSTM WND DMG     3 NNE EDISON            31.60N 84.72W
08/06/2018                   CALHOUN            GA   911 CALL CENTER

            TREE DOWN ON WAYBACK ROAD.

&&

Special weather statement, Aug 6, 10:28 PM EDT, 33 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
1028 PM EDT MON AUG 6 2018

FLZ013-016-026-070300-
Liberty FL-Gadsden FL-Calhoun FL-
1028 PM EDT MON AUG 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CALHOUN COUNTY IN THE
PANHANDLE OF FLORIDA...SOUTHWESTERN GADSDEN AND CENTRAL LIBERTY
COUNTIES IN BIG BEND OF FLORIDA UNTIL 1100 PM EDT/1000 PM CDT/...

At 1028 PM EDT/928 PM CDT/, Doppler radar was tracking a strong
thunderstorm 8 miles southwest of Greensboro, or 13 miles east of
Blountstown, moving southwest at 30 mph.

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

Locations impacted include...
Blountstown, Greensboro, Bristol, Rock Bluff, Clarksville, Juniper,
Selman, Abe Springs, Vilas, Hosford, Jensen Place, Central City,
Chipola, Clio, Kennys Mill, Estiffanulga, Lowry, Blountstown Airport,
Wetumpka and Nixon Garden.

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.

&&

LAT...LON 3045 8529 3064 8480 3052 8460 3035 8470
      3033 8472 3032 8471 3008 8484
TIME...MOT...LOC 0228Z 051DEG 26KT 3047 8483

42-DVD

Special weather statement, Aug 6, 10:51 PM EDT, 10 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
1051 PM EDT MON AUG 6 2018

FLZ014-026-070330-
Liberty FL-Inland Gulf FL-
1051 PM EDT MON AUG 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN GULF AND LIBERTY
COUNTIES UNTIL 1130 PM EDT...

At 1051 PM EDT, Doppler radar was tracking a strong thunderstorm 15
miles southeast of Blountstown, moving southwest at 30 mph.

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

Locations impacted include...
Orange, Bristol, Telogia, Vilas, Hosford, Jensen Place, Central City,
Red Hill, Clio, Estiffanulga, Kern, Wilma, Lewis, Sumatra, Woods and
Nixon Garden.

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.

&&

LAT...LON 3005 8514 3009 8515 3012 8513 3017 8514
      3022 8511 3021 8510 3023 8508 3030 8506
      3031 8503 3034 8505 3039 8501 3040 8503
      3041 8501 3042 8503 3043 8502 3044 8499
      3040 8468 3001 8491 3001 8500 2998 8502
TIME...MOT...LOC 0251Z 036DEG 27KT 3028 8487

42-DVD

Special weather statement, Aug 6, 11:01 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
1101 PM EDT MON AUG 6 2018

FLZ017>019-027-028-070345-
Inland Taylor FL-Inland Jefferson FL-Madison FL-Inland Wakulla FL-
Leon FL-
1101 PM EDT MON AUG 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN WAKULLA...WEST
CENTRAL JEFFERSON...NORTHWESTERN TAYLOR...SOUTHEASTERN LEON AND
SOUTHWESTERN MADISON COUNTIES UNTIL 1145 PM EDT...

At 1101 PM EDT, Doppler radar was tracking a strong thunderstorm 12
miles east of Tallahassee, moving west at 10 mph.

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

Locations impacted include...
Woodville, Tallahassee, Florida State University, Florida A And M,
Greenville, Cody, Gaither Community Center, Tallahassee Memorial
Hosp, Eight Mile Pond, Drifton, Tallahassee Mall, Governors Square
Mall, Natural Bridge, Belair, Iddo, Levy Park, Indian Head Acres,
Chaires Crossroads, Baum and Maclay State Gardens.

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.

&&

LAT...LON 3046 8361 3019 8367 3028 8431 3055 8429
TIME...MOT...LOC 0301Z 093DEG 8KT 3041 8408

11-NGUYEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 9:30 PM EDT	Special Weather Statement	TAE	Madison	30 min
Aug 6, 10:28 PM EDT	Special Weather Statement	TAE	Calhoun, Liberty	32 min
Aug 6, 10:51 PM EDT	Special Weather Statement	TAE	Liberty	39 min
Aug 6, 11:15 PM EDT	Severe Thunderstorm Warning	TAE	Gulf, Liberty	45 min
Aug 7, 12:31 AM EDT	Special Marine Warning	TAE		59 min
Aug 7, 12:55 AM EDT	Special Marine Warning	TAE		65 min
Aug 7, 1:16 AM EDT	Special Marine Warning	TAE		59 min
Aug 7, 1:55 AM EDT	Special Marine Warning	TAE		65 min
Aug 7, 6:40 PM EDT	Special Weather Statement	TAE	Washington	50 min
Aug 6, 8:06 PM EDT	Severe Thunderstorm Warning	TAE	Calhoun, Clay, Early	39 min
Aug 6, 8:25 PM EDT	Areal Flood Advisory	TAE	Baker, Calhoun, Clay, Early, Randolph	2 hr
Aug 6, 8:32 PM EDT	Severe Thunderstorm Warning	TAE	Baker, Calhoun, Clay, Decatur, Early, Miller and 3 more	58 min
Aug 6, 9:29 PM EDT	Special Weather Statement	TAE	Decatur, Seminole	46 min
Aug 6, 9:23 PM EDT	Special Weather Statement	TAE	Henry, Houston	52 min
Aug 6, 9:46 PM EDT	Special Weather Statement	TAE	Dale	29 min

Nearby

Special Weather Statements in Florida, 2018 Every special weather statement 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.