Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Tallahassee, FL

July 10, 2017Coffee County, Alabama

NWS Tallahassee, FL issued this special weather statement at Jul 10, 2017, 5:13 PM CDT for Coffee County, Alabama. 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 10, 2017, 5:13 PM CDT (22:13 UTC)
Expired
Jul 10, 2017, 5:45 PM CDT
In force
32 min
Issued by
NWS Tallahassee, FL

County Coffee County, AL

The radar

The Ft Rucker radar (KEOX), 60 km from the middle of the area, began a volume at 22:17 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

Birmingham, AL (KBMX), launched 12:00Z, 10.2 hours before the alert went out and 205 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, Birmingham, AL at 12:00Z on 2017-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Birmingham, AL at 12:00Z on 2017-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1605 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
8 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.

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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 10, 1:56 PM CDT, 3 hours 17 minutes earlier.

Area forecast discussion, Jul 10, 1:56 PM CDT, 3 hours 17 minutes before
Area Forecast Discussion
National Weather Service Tallahassee FL
256 PM EDT Mon Jul 10 2017

.NEAR TERM [Through Tonight]...

Scattered to numerous showers and thunderstorms will continue
through the afternoon hours and diminish after sunset. Modifying the
12z KTAE sounding for an afternoon T/Td of 91/74 yields SBCAPE
values around 4000 j/kg. Given the high instability and observed 700-
500 mb lapse rates over 6C/km, there could be a couple of strong to
locally severe storms this afternoon, which is typical of summer.
The RAP also supports this thinking with WMSI values forecast near
80 this afternoon. Overnight lows will generally be in the low to
mid 70s.

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

Surface and upper level ridging will continue to expand westward
from the western Atlantic. However, models don't show any
significant drying across our region until Wednesday afternoon and
then mainly just our eastern zones. Look for another typical
summertime day Tuesday with PoPs 50% most inland areas and highs in
the lower 90s. For Wednesday, PoPs will be trimmed back to 30% for
most of our GA zones and the SE Big Bend with 40-50% elsewhere.
Highs Wednesday should reach the lower to mid 90s away the coastal
areas.

.LONG TERM [Thursday Through Monday]...

As ridging builds further west, we will see additional drying
and warmer temperatures across the area through the remainder of
the work week. Chances for afternoon and early evening showers and
thunderstorms will fall to 20-30% for Thursday and around 30% on
Friday. Rain chances increase to near seasonal levels over the
weekend into Monday as the ridge breaks down and a trough deepens
along the Atlantic seaboard. This will send a surface front our
way along with increasing deep layer moisture. Additionally, both
the EURO and GFS show tropical moisture from the remnant of
Tropical Depression #4 moving into the eastern Gulf and lifting
northward over the weekend. The EURO is more bullish and shows
possible redevelopment of this feature with a closed surface low
approaching SE LA on Sunday. This will be monitored closely.
Highs will remain in the low to mid 90s and lows will be mostly in
the mid 70s.

&&

.AVIATION [Through 18Z Tuesday]...

Scattered to numerous TSRA will continue through the afternoon
hours and diminish after sunset. Outside of convection, VFR
conditions are expected to prevail.

&&

.MARINE...

High pressure will dominate through the period with light winds and
low seas. There will be chances for showers and thunderstorms
throughout the period.

&&

.FIRE WEATHER...

No concerns.

&&

.HYDROLOGY...

A wet seabreeze pattern will remain in place a few more days,
however due to the scattered nature of these storms, no widespread
heavy rainfall is anticipated from these storms. Any flooding
impacts will be isolated to areas of localized heavy rainfall. Our
rivers will remain below flood stage.

&&

.PRELIMINARY POINT TEMPS/POPS...

Tallahassee   74  92  74  94  75 /  10  50  20  50  20
Panama City   78  89  78  90  78 /  20  50  20  40  20
Dothan        73  91  74  93  75 /  20  50  20  50  20
Albany        74  92  74  94  75 /  30  50  30  30  20
Valdosta      73  93  74  94  74 /  20  50  20  30  20
Cross City    73  92  74  93  74 /  20  40  30  30  20
Apalachicola  77  89  77  90  77 /  30  40  20  30  20

&&

.TAE WATCHES/WARNINGS/ADVISORIES...

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

&&

NEAR TERM...DVD
SHORT TERM...Barry
LONG TERM...Barry
AVIATION...DVD
MARINE...Barry
FIRE WEATHER...Camp
HYDROLOGY...Moore

In the hours before

Special weather statement, Jul 10, 2:37 PM CDT, 2 hours 36 minutes before
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Special weather statement, Jul 10, 3:17 PM CDT, 1 hour 56 minutes before
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Special weather statement, Jul 10, 3:26 PM CDT, 1 hour 47 minutes before
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Special weather statement, Jul 10, 3:44 PM CDT, 1 hour 29 minutes before
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Local storm report, Jul 10, 4:18 PM CDT, 55 minutes before
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Special weather statement, Jul 10, 5:13 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 11:49 AM CDTSpecial Weather StatementTAELeon41 min
Jul 10, 12:30 PM CDTSpecial Weather StatementTAELeon30 min
Jul 10, 12:31 PM CDTSpecial Weather StatementTAEBrooks29 min
Jul 10, 12:35 PM CDTSpecial Weather StatementTAEGrady25 min
Jul 10, 12:51 PM CDTSpecial Weather StatementTAESeminole24 min
Jul 10, 12:57 PM CDTSpecial Weather StatementTAEThomas33 min
Jul 10, 1:08 PM CDTSpecial Weather StatementTAEBrooks, Lowndes37 min
Jul 10, 1:18 PM CDTSpecial Weather StatementTAEBaker27 min
Jul 10, 1:37 PM CDTSpecial Weather StatementTAELanier23 min
Jul 10, 1:57 PM CDTSpecial Weather StatementTAEIrwin33 min
Jul 10, 2:12 PM CDTSpecial Weather StatementTAETift33 min
Jul 10, 2:13 PM CDTSpecial Weather StatementTAEBaker32 min
Jul 10, 2:26 PM CDTSevere Thunderstorm WarningTAEIrwin27 min
Jul 10, 2:37 PM CDTSpecial Weather StatementTAEDougherty38 min
Jul 10, 3:26 PM CDTSpecial Weather StatementTAERandolph19 min
Jul 10, 3:44 PM CDTSpecial Weather StatementTAEClay, Randolph31 min
Jul 10, 3:17 PM CDTSpecial Weather StatementTAEHenry28 min

Nearby

Special Weather Statements in Alabama, 2017Every 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.