Alert archive / Georgia / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 165, NWS Tallahassee, FL

July 26, 2013Ben Hill County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 26, 2013, 6:56 PM EDT for Ben Hill County, Georgia. It was in force for 34 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
Jul 26, 2013, 6:56 PM EDT (22:56 UTC)
Expired
Jul 26, 2013, 7:30 PM EDT
In force
34 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

County Ben Hill County, GA

The radar

The Moody AFB radar (KVAX), 99 km from the middle of the area, began a volume at 22:56 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.9 hours before the alert went out and 215 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, Peachtre/Fal Fld, GA at 12:00Z on 2013-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 924 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, Peachtre/Fal Fld, GA at 12:00Z on 2013-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939Sfc1 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
924 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
694 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 26, 3:35 PM EDT, 3 hours 21 minutes earlier.

Area forecast discussion, Jul 26, 3:35 PM EDT, 3 hours 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
335 PM EDT Fri Jul 26 2013

.NEAR TERM [Through Tonight]...
With the relatively dry airmass in place over the region and minimal
convection expected this afternoon, expect a dry forecast overnight
with low temperatures in the lower 70s.

&&

.SHORT TERM [Saturday Through Monday]...
A quite familiar theme to this summer, yet another Upper level trof
will become reestablished across the SE U.S. on Sat. and Sun., but
at least this time, conditions are not expected to be nearly as
unsettled as the last few events. Deep layer moisture is not nearly
as high as the past few weeks. as blended TPWs (sat. estimated
PWATS) are only peaking in the 1.5" range where the moisture from
the trof will be advecting from. Therefore, only expect modest
increases in PoPs and near climo temps.

&&

.LONG TERM [Monday Night through Friday]...
The extended period may actually begin with a brief period of Upper
Level ridging lingering through much of the day on Tuesday, before
this relatively hot and dry ridge retrogrades back into TX. This
will allow the all too familiar Upper Level trough to become
reestablished down the eastern seaboard, spelling a likely return to
above normal PoPs and QPF across the CWA for much of the period.
Thus far, guidance temps are coming in quite warm, but have a
feeling Max temps may need to be reduced over time depending on how
unsettled conditions become.

&&

.AVIATION...
VFR conditions are expected to prevail through the forecast period.
KABY and KVLD may see a brief period of MVFR vsby around sunrise.
Winds will remain light through the period.

&&

.MARINE...
High pressure will continue to dominate at the surface with
generally light winds and low seas continuing through the period.

&&

.FIRE WEATHER...
Red flag conditions are not anticipated through the weekend.

&&

.HYDROLOGY...
There are still several river points lingering in either action
stage or minor flood stage. However, additional rainfall over the
next couple of days will be quite minimal at best, with no further
contributions expected to increased flow. The most up to date,
specific river forecast information can be found on our local AHPS
page at

http:/water.weather.gov/ahps2/index.php?wfo=tae.

&&

.PRELIMINARY POINT TEMPS/POPS...
Tallahassee   72  93  70  92  71 / 10  30  30  30  20
Panama City   78  88  74  88  75 / 10  30  30  30  20
Dothan        72  89  68  91  70 / 10  40  40  30  20
Albany        73  92  69  91  70 / 10  30  30  30  20
Valdosta      72  94  69  92  69 / 20  40  30  40  20
Cross City    72  92  70  89  69 / 20  30  20  40  20
Apalachicola  77  88  74  86  75 / 10  30  30  30  20

&&

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

&&

NEAR TERM...Camp
SHORT TERM...Gould
LONG TERM...Gould
AVIATION...Camp
MARINE...Gould
FIRE WEATHER...Camp
HYDROLOGY...Gould

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 10:24 AM EDTRiver Flood WarningTAEDecatur, Miller, Seminole64 hr

Nearby

Severe Thunderstorm Warnings in Georgia, 2013Every 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.