Flash Flood Warning 19, NWS Huntsville, AL

Area Forecast Discussion
National Weather Service Huntsville AL
319 PM CDT Sat Aug 3 2019

.NEAR TERM...(Tonight)
Issued at 319 PM CDT Sat Aug 3 2019

Scattered showers and thunderstorms continue to develop and push off
slowly to the west this afternoon. Most of the activity currently is
primarily west of I-65. This is all being driven by forcing from a
upper low that is currently over southeastern Alabama slowly edging
northward. Additional convergence extends into northwestern Alabama.
High PWATS around 2.00 inches and light winds aloft should promote
the threat of locally heavy rainfall and isolated flash flooding.
Frequent lightning and gusty winds up to 50 mph are possible, mainly
in northwestern Alabama.

Expect shower and thunderstorm activity to increase east of I-65 the
rest of the afternoon and continue further west, before becoming
more scattered this evening. Similar threats are expected overnight
with stronger storms. Lows in the upper 60s to lower 70s look likely
again tonight. With light winds and two days of consecutive rainfall,
areas of fog look reasonable after midnight.

.SHORT TERM...(Sunday through Monday)
Issued at 319 PM CDT Sat Aug 3 2019

Sunday looks even wetter, as another shortwave moves through northwest
flow into the Tennessee Valley and the upper low continues to move
and merge with that forcing over northern Alabama and Georgia.
Similar threats are expected with thunderstorms on Sunday. A flooding
threat will be a bit more prevalent maybe on Sunday, given recent
locally heavy rainfall in spots. Cooler temperatures are expected
with highs only reaching the lower to mid 80s primarily.

Models push the majority of this forcing into southern Alabama/Georgia
on Monday. It should be warmer due to less precipitation coverage,
with highs reaching 90 or 91 degrees in spots. However, isolated to
scattered showers and thunderstorms will remain possible near the
departing surface boundary moving into central/southern Alabama.

.LONG TERM...(Monday night through Friday)
Issued at 319 PM CDT Sat Aug 3 2019

A drier pattern remains in place Monday night into Tuesday, as we
get a break from rainfall and a surface high builds briefly over the
area. It will be warmer thought too with highs in climbing back into
the lower 90s.

The middle to end of next week continues to look more unsettled
and humid again, as additional energy aloft moves back into the area.
Isolated to scattered thunderstorms return to the forecast.

&&

.AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon)
Issued at 1235 PM CDT Sat Aug 3 2019

Showers are developing near the KHSV terminal at this time. Radar
trends are weakening this activity so just kept a VCSH in predominantly
after 18Z. However, believe a better chance of -TSRA directly
impacting the KHSV terminal will exist between 18Z and 22Z, so have
a tempo in during that period. Expect this tempo window to be a bit
later at KMSL, between 22Z and 02Z. During these periods VSBYS and
CIGS could lower to at least MVFR criteria or lower. For now kept
MVFR in terminals. Expect VFR conditions to return both terminals
after 03Z. Fog is expected after 09Z, so included MVFR CIGS at both
terminals. Guidance hints lower than that at KHSV, but will hold off
for now lowering VSBYS further.

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
TN...NONE.
&&

NEAR TERM...KTW
SHORT TERM...KTW
LONG TERM...KTW
AVIATION...KTW

For more information please visit our website
at weather.gov/huntsville.

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Special Weather Statement
National Weather Service Huntsville AL
224 PM CDT Sat Aug 3 2019

ALZ016-032015-
Cullman AL-
224 PM CDT Sat Aug 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CULLMAN COUNTY UNTIL
315 PM CDT...

At 224 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Nesmith, or 10 miles southwest of Cullman, moving
west at 15 mph.

Pea size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Dodge City, Crane Hill, Wilburn, Logan, Bremen and Smith Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Strong gusty winds will be capable of knocking down small tree limbs
along with other small unsecured items. Seek safe shelter until this
storm has passed.

If on or near Smith Lake, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.

&&

LAT...LON 3390 8710 3391 8708 3394 8711 3396 8711
      3397 8714 3399 8715 3399 8711 3420 8711
      3416 8696 3401 8680 3389 8707
TIME...MOT...LOC 1924Z 099DEG 11KT 3411 8701

Special Weather Statement
National Weather Service Huntsville AL
410 PM CDT Sat Aug 3 2019

ALZ008-032200-
Marshall AL-
410 PM CDT Sat Aug 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MARSHALL COUNTY
UNTIL 500 PM CDT...

At 409 PM CDT, Doppler radar was tracking a strong thunderstorm over
Boaz, moving southwest at 5 mph.

Winds in excess of 30 mph and heavy rainfall will be possible with
this storm.

Locations impacted include...
Albertville, Boaz, Douglas, McVille, High Point, Horton, Hustleville,
Rabbit Town and Hyatt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Very heavy rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3422 8642 3432 8615 3427 8610 3419 8610
      3418 8619 3410 8630
TIME...MOT...LOC 2109Z 051DEG 6KT 3422 8617

JMS

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