Alert archive / Alabama / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 197, NWS Tallahassee, FL

July 19, 2019Henry County, Houston County, Alabama

NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 19, 2019, 2:57 PM CDT for Henry County, Houston County, Alabama. It was in force for 17 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 19, 2019, 2:57 PM CDT (19:57 UTC)
Expired
Jul 19, 2019, 3:14 PM CDT
In force
17 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Henry County, AL, Houston County, AL

The radar

The Ft Rucker radar (KEOX), 23 km from the middle of the area, began a volume at 20:00 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, 8.0 hours before the alert went out and 139 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, Tallahassee Rgnl, FL at 12:00Z on 2019-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1003 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, Tallahassee Rgnl, FL at 12:00Z on 2019-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 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
1003 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1151 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
-28 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 19, 2:33 PM CDT, 24 minutes earlier.

Area forecast discussion, Jul 19, 2:33 PM CDT, 24 minutes before
Area Forecast Discussion
National Weather Service Tallahassee FL
333 PM EDT Fri Jul 19 2019

.NEAR TERM [Through Tonight]...

Shower and thunderstorms will continue to persist several hours
after sunset over land, with the main threats being gusty winds
and heavy rainfall. With PWATs approaching 2" across the region
and weak steering flow in place, localized flooding will be an
issue this afternoon as storms yield rainfall rates of up to
2"/hour at times. As storms wane inland overnight, convection
offshore will pick up. Mostly cloudy skies overnight will preclude
widespread fog, but patchy fog will be possible in areas where
soils are saturated from rains this afternoon. Temperatures
overnight will cool into the low to mid 70s.

.SHORT TERM [Saturday Through Sunday Night]...

The weak upper level low that brought widespread showers and
thunderstorms will slowly traverse west across the Gulf coast
through the weekend. In its wake a slightly drier airmass moving
in from the southeast will keep thunderstorm coverage a little
lower through the weekend. Expect shower coverage to be greatest
west of Tallahassee/Albany on Saturday with coverage further
reducing on Sunday where only 30 to 40 POPs are anticipated across
the forecast area and most focused along the seabreeze.

Temperatures will remain in the lower 90s with a potential cool
down (albeit slight) on the horizon for next week as a weak front
pushes southeast.

.LONG TERM [Monday Through Friday]...

The region will be situated between two upper level ridges on
Monday with isolated to scattered showers expected in the
afternoon. Through next week, the upper level ridge to our east
will begin to break down as a large central US trough amplifies
and digs southeast. This trough will bring a weak cold front into
the region on Tuesday but indications are that it will stall
somewhere near the coast or over inland portions of southeast AL
or southern GA. Depending where it stalls, expect locations along
and ahead of the front to remain in a much wetter pattern than
normal. This front should stick around through the middle of next
week and possibly towards the end of the week, though its length
of stay will depend how quickly the Bermuda high rebuilds in from
the east.

With the increased cloud cover with the front, temperatures will
trend cooler and fall into the upper 80s and near 90.

&&

.AVIATION...
[Through 18Z Saturday]

Scattered SHRA/TSRA continue across parts of the tri-state region at
this hour, with the most likely terminal to see impacts in the next
few hours being VLD. Will have to monitor DHN and TLH for potential
storms moving in later this afternoon. Reductions in CIGS/vsby as
well as gusty and erratic winds will be possible with these storms.
Backed off on fog overnight from the inherited TAFs, but patchy fog
will be possible, especially near terminals that see a lot of
rainfall this afternoon.

&&

.MARINE...

Winds will remain on the lighter side through the next week and
generally at or below 10 knots through the period. Seas will also
remain on the lower side and only around 1 to 3 feet through the
next 7 days. Shower and thunderstorm chances will be greatest in
the overnight and morning hours with lesser coverage expected in
the afternoon.

&&

.FIRE WEATHER...

KBDI values have been creeping up, but there's a wet pattern
on tap for the weekend. 20 ft winds will be light and RH
values will be mostly above 50%, so no red flag conditions
are forecast.

&&

.HYDROLOGY...

Local rivers are below action stage. Rainfall chances return to
normal over the weekend, but looking ahead into next week a cold
front will likely stall somewhere over the southeast bringing the
possibility for well above normal rainfall chances beginning
in the middle of next week.
&&

.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   72  92  72  93  73 /  20  50  10  40  10
Panama City   76  87  75  88  76 /  40  40  20  30  20
Dothan        74  91  72  92  73 /  40  60  20  40  10
Albany        74  92  74  93  75 /  40  50  20  30  10
Valdosta      72  91  72  92  73 /  20  40  10  40  10
Cross City    74  92  74  91  74 /  20  30  10  40  10
Apalachicola  76  88  75  88  76 /  40  40  10  40  20

&&

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

NEAR TERM...Pullin
SHORT TERM...Dobbs
LONG TERM...Dobbs
AVIATION...Pullin
MARINE...Dobbs
FIRE WEATHER...Nguyen
HYDROLOGY...Dobbs

In the hours before

Special weather statement, Jul 19, 2:14 PM CDT, 43 minutes before
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Special weather statement, Jul 19, 2:27 PM CDT, 30 minutes before
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Local storm report, Jul 19, 2:40 PM CDT, 17 minutes before
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Local storm report, Jul 19, 2:42 PM CDT, 15 minutes before
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Local storm report, Jul 19, 2:43 PM CDT, 14 minutes before
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Special weather statement, Jul 19, 2:48 PM CDT, 9 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 11:33 AM CDTSpecial Weather StatementTAEDixie27 min
Jul 19, 11:51 AM CDTSpecial Weather StatementTAETaylor39 min
Jul 19, 12:14 PM CDTSpecial Weather StatementTAEHolmes46 min
Jul 19, 1:02 PM CDTSpecial Weather StatementTAEHolmes28 min
Jul 19, 1:46 PM CDTSpecial Marine WarningTAE89 min
Jul 19, 1:49 PM CDTSpecial Weather StatementTAEFranklin41 min
Jul 19, 2:27 PM CDTSpecial Weather StatementTAELeon33 min
Jul 19, 2:41 PM CDTAreal Flood AdvisoryTAEGadsden, Leon64 min
Jul 19, 5:28 PM CDTSpecial Weather StatementTAEWashington32 min
Jul 18, 7:41 PM CDTSpecial Weather StatementTAEGrady34 min
Jul 18, 8:07 PM CDTSpecial Weather StatementTAEGrady38 min
Jul 19, 2:48 PM CDTSpecial Weather StatementTAELanier27 min
Jul 19, 3:12 PM CDTSpecial Weather StatementTAEColquitt33 min
Jul 19, 3:36 PM CDTSpecial Weather StatementTAEMiller24 min
Jul 19, 3:48 PM CDTSpecial Weather StatementTAEBen Hill, Dougherty, Irwin, Tift, Turner, Worth57 min
Jul 19, 4:06 PM CDTSevere Thunderstorm WarningTAEBen Hill, Irwin, Tift, Turner, Worth54 min
Jul 19, 4:12 PM CDTAreal Flood AdvisoryTAEDougherty, Lee2 hr
Jul 19, 4:18 PM CDTAreal Flood AdvisoryTAEBen Hill, Irwin, Tift, Turner, Worth117 min
Jul 19, 4:24 PM CDTFlash Flood WarningTAEDougherty, Lee96 min
Jul 19, 4:41 PM CDTFlash Flood WarningTAEBaker, Mitchell94 min
Jul 19, 5:13 PM CDTFlash Flood WarningTAEWorth92 min
Jul 19, 2:14 PM CDTSpecial Weather StatementTAEHouston31 min
Jul 19, 2:19 PM CDTSevere Thunderstorm WarningTAEDale, Henry, Houston41 min
Jul 19, 3:19 PM CDTSpecial Weather StatementTAEHouston26 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2019Every severe thunderstorm warning in 2019

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.