Special Marine Warning 310, NWS Mobile, AL

Area Forecast Discussion
National Weather Service Mobile AL
436 PM CDT Sat Oct 29 2022

...New MESOSCALE, NEAR TERM, SHORT TERM, LONG TERM, MARINE...

.MESOSCALE UPDATE THROUGH LATE TONIGHT...
Issued at 409 PM CDT Sat Oct 29 2022

Strong to severe thunderstorms continue to be expected as we move
forward in time through this evening with a continued threat for
damaging winds and tornadoes across southeastern Mississippi into
southwestern Alabama. A broken line of thunderstorms continues to
slowly push east near New Orleans in association with a weak cold
front. This feature should begin to impinge on our Mississippi
counties within the next 3 to 6 hours. Ahead of this, a warm front
presently draped from just offshore the Florida Panhandle westward
across southern Mobile and Baldwin counties then northwest into
southern Perry County will continue to slowly lift northward this
afternoon and evening. Expect this feature to be in the vicinity of
the I-10 corridor or just north within the next 3 to 6 hours.

Along and south of the warm front, a severe thunderstorm threat will
continue into this evening. Ahead of the main line, we have had
subtle forcing aloft around the 700mb layer to help maintain
thunderstorms across southeastern MS, mainly from Stone/Perry
counties westward. These low-topped supercell thunderstorms, or as
we like to call them "mini spinnies", have periodically intensified
with modest rotation and gusty wind potential. A 17z sounding from
our neighbors in New Orleans revealed the culprit for keeping storms
from intensifying more robustly with the presence of an EML
(Elevated Mixed Layer) between the 700 to 600mb level. As forcing
for ascent continues to increase with the approaching upper level
trough and height falls continue into the evening, we should see
this EML lift and any residual capping to wane, allowing for storms
to better realize the environment they reside in. Modest SB and
MLCAPE around 1,000 to 1,500j/kg will continue to build into the
area with effective shear values increasing to 40 to 50kts over the
next 3 to 6 hours, supporting a continued threat of supercells ahead
of and embedded within the main line with damaging winds and
tornadoes. Large, looping low level hodographs also indicate a
helicity rich low level environment for storms to utilize with
upwards of 200 to 300+ sfc-1km and sfc-3km SRH, and 150 to 200 sfc-
500m SRH per KMOB and KLIX VAD profiles. In addition to the severe
thunderstorm potential, training convection over the same areas
associated with the slow eastward progression of the line may help
foster a flash flood threat across our southeastern MS counties the
next 3 to 6 hours. MM/25

&&

.NEAR TERM...
(Sunday through Sunday night)
Issued at 409 PM CDT Sat Oct 29 2022

Aloft, the negatively tilted shortwave trough will continue to
slowly drift off to the northeast and continue to weaken while
phasing with a larger scale longwave trough that encompasses much
of the central CONUS. Meanwhile, off to our west, the next
shortwave begins to dive into the desert southwest by Sunday
night. This pattern leaves our region in southwest flow aloft
through the period. By the Sunday morning, the weakening surface
low will continue to move off to the north-northeast, while the
cold front (located generally along the Alabama River) continues
advancing eastward through the region through Sunday evening.
In terms of sensible weather, the severe threat that affected us
in the mesoscale period diminishes, with PoP chances also
diminishing from west to east as the slow moving cold front moves
slowly across the CWA. Behind the cold front showers/storms have
diminished, while along and ahead of the cold front, PoP chances
remain numerous to widespread in nature through the morning.By the
afternoon, chances diminish further with only scattered to
isolated PoPs excepted east of the Alabama River. Moving into the
Sunday night, the cold front is on the eastern fringe of our
region and a few linger isolated showers remain possible.

As for temps, lows in the 60s tonight will become low to mid 50s
on Sunday night. Highs are expected to range in the 70s on Sunday.
Lastly, a HIGH risk of rip current will continue through Sunday,
becoming moderate on Sunday night. JEH/88

&&

.SHORT TERM...
(Monday through Tuesday night)
Issued at 409 PM CDT Sat Oct 29 2022

Lead upper level impulse ejects northeast up across the upper Mid-
West late Monday while a long wave upper trof pivots eastward across
Texas Tuesday. Southwest flow aloft is left in place over the deep
south but deep moisture lacks thru early Tuesday. At the surface,
high pressure advances east over the deep south Monday into early
Tuesday and combined with lower deep layer moisture profiles, rain-
free weather is expected to open up the work week. As the Texas
system lifts northeast and approaches the Lower MS River Valley
Tuesday night, deep layer ascent increases over LA within a zone of
improving Gulf moisture. Expect to see showers/storms organizing to
our west and southwest early Tuesday night, but as quickly as it
develops it may soon begin a downward trend in organization as there
are indications that organized lift will begin to wane through the
remainder of the night as the upper energy races northeast over
AL/GA and upper flow begins to deamplify somewhat. Still enough
energy/lift and moisture though to bring a return to a small chance
of showers Tuesday night to the local area.

Highs on Monday look to range 73 to 78 area-wide. Similar highs
expected most areas Tuesday, outside of a few locations in the far
eastern zones possibly to around 80. A cool night on tap Monday
night with lows in the lower to mid 50s interior and upper 50s/lower
60s coast. Tuesday night, gridded low temperatures show a small
moderating/warming trend over the southern half of the local area.
Coolest lows Tuesday night, in the lower/mid 50s, retreat northward
up along the US Hwy 84 corridor. /10

&&

.LONG TERM...
(Wednesday through Saturday)
Issued at 409 PM CDT Sat Oct 29 2022

As upper trof quickly pushes east across the Appalachians Wednesday,
upper ridge over the Gulf of Mexico amplifies with it's northern
nose building up into the TN valley by Thursday. The upper ridge
holds in place Friday with its axis shifting eastward and strongest
over the southeast US and central/eastern Gulf Saturday. Large scale
compressional sinking motions associated with the upper ridge
through the end of the week favors another period of dry weather
Wednesday through Friday. This is not good news for the central Gulf
coast which is plagued by moderate to severe drought conditions. A
small chance of showers possible by Saturday. /10

&&

.MARINE...
Issued at 409 PM CDT Sat Oct 29 2022
A Small Craft Advisory remains in effect for the open Gulf water
until 5 am tonight with Small Craft Exercise Caution headlines for
most of the remainder of the area. The onshore flow diminishes to a
light to moderate southwesterly flow on Sunday, with no concerns
seen for the remainder of the period. /22

&&

.PRELIMINARY POINT TEMPS/POPS...
Mobile      64  76  56  78  56  78  58  79 /  90  30   0   0   0  10  20  10
Pensacola   69  77  60  78  59  79  61  80 /  80  90  10  10   0  10  10  10
Destin      71  79  65  79  63  81  66  81 /  40  90  20  10   0  10  10  10
Evergreen   63  74  53  77  51  78  53  78 /  60  70  10   0   0   0  20  10
Waynesboro  60  73  53  73  52  74  53  74 /  90  20   0   0   0  10  20  10
Camden      63  72  53  73  51  74  53  74 /  70  60  10   0   0  10  20  10
Crestview   66  77  58  78  55  80  58  80 /  40  90  20  10   0   0  10  10

&&

.MOB WATCHES/WARNINGS/ADVISORIES...
AL...High Rip Current Risk through Sunday afternoon for ALZ265-266.

FL...High Rip Current Risk through Sunday afternoon for FLZ202-204-
     206.

MS...None.
GM...Small Craft Advisory until 5 AM CDT Sunday for GMZ650-655-670-
     675.

&&

This product is also available on the web at:
www.weather.gov/mob

Special Weather Statement
National Weather Service Mobile AL
118 PM CDT Sat Oct 29 2022

MSZ078-291900-
Stone MS-
118 PM CDT Sat Oct 29 2022

...A strong thunderstorm will impact portions of western Stone County
through 200 PM CDT...

At 117 PM CDT, National Weather Service doppler radar indicated a
strong thunderstorm 11 miles west of Saucier, or 17 miles southeast
of Poplarville, moving north at 20 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This storm will remain over mainly rural areas of western Stone
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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.

A Tornado Watch remains in effect until 700 PM CDT for southeastern
Mississippi.

&&

LAT...LON 3091 8934 3091 8919 3068 8922 3067 8924
      3065 8924 3065 8934
TIME...MOT...LOC 1817Z 179DEG 17KT 3066 8933

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

CGAL

Special Weather Statement
National Weather Service Mobile AL
333 PM CDT Sat Oct 29 2022

ALZ263-265-292115-
Mobile Coastal AL-Mobile Central AL-
333 PM CDT Sat Oct 29 2022

...A strong thunderstorm will impact portions of central Mobile
County through 415 PM CDT...

At 333 PM CDT, National Weather Service doppler radar indicated a
strong thunderstorm over Coden, or over Bayou La Batre, moving north
at 35 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Midtown Mobile, Downtown Mobile, Prichard, Tillmans Corner, Theodore,
Chickasaw, Bayou La Batre, I65 And I165, Coden, I10 And I65 and
Mobile Regional Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3036 8819 3037 8822 3036 8825 3032 8826
      3037 8826 3037 8824 3038 8827 3077 8836
      3077 8802 3072 8804 3073 8804 3076 8803
      3074 8805 3070 8804 3059 8807 3057 8809
      3033 8815 3033 8816 3032 8819
TIME...MOT...LOC 2033Z 181DEG 30KT 3038 8821

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

MM

Special Weather Statement
National Weather Service Mobile AL
433 PM CDT Sat Oct 29 2022

MSZ076-079-292215-
Greene MS-George MS-
433 PM CDT Sat Oct 29 2022

...A strong thunderstorm will impact portions of eastern George and
south central Greene Counties through 515 PM CDT...

At 432 PM CDT, National Weather Service doppler radar indicated a
strong thunderstorm over Lucedale, moving north at 20 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Lucedale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Tornado Watch remains in effect until 700 PM CDT for southeastern
Mississippi.

&&

LAT...LON 3107 8868 3108 8851 3074 8850 3074 8863
TIME...MOT...LOC 2132Z 177DEG 23KT 3089 8858

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

CGAL

Special Weather Statement
National Weather Service Mobile AL
442 PM CDT Sat Oct 29 2022

ALZ263-265-292230-
Mobile Coastal AL-Mobile Central AL-
442 PM CDT Sat Oct 29 2022

...A strong thunderstorm will impact portions of southwestern Mobile
County through 530 PM CDT...

At 442 PM CDT, National Weather Service doppler radar indicated a
strong thunderstorm 4 miles east of Bayou La Batre, moving north at
30 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Tillmans Corner and Theodore.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 1000 PM CDT for southwestern
Alabama.

&&

LAT...LON 3061 8838 3065 8814 3046 8810 3045 8811
      3044 8810 3040 8810 3038 8811 3036 8820
TIME...MOT...LOC 2142Z 158DEG 24KT 3042 8818

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

CGAL

Special Weather Statement
National Weather Service Mobile AL
512 PM CDT Sat Oct 29 2022

MSZ075-076-078-292300-
Stone MS-Perry MS-Greene MS-
512 PM CDT Sat Oct 29 2022

...A strong thunderstorm will impact portions of southern Perry,
southwestern Greene and central Stone Counties through 600 PM CDT...

At 512 PM CDT, National Weather Service doppler radar indicated a
strong thunderstorm 5 miles northeast of Perkinston, or 5 miles
southeast of Wiggins, moving north at 30 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Wiggins, Perkinston, McHenry and McLain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Tornado Watch remains in effect until 700 PM CDT for southeastern
Mississippi.

&&

LAT...LON 3091 8921 3091 8914 3117 8914 3116 8875
      3068 8904 3068 8924 3065 8924 3065 8927
TIME...MOT...LOC 2212Z 198DEG 25KT 3081 8906

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

MM

Special Weather Statement
National Weather Service Mobile AL
514 PM CDT Sat Oct 29 2022

ALZ263-292300-
Mobile Central AL-
514 PM CDT Sat Oct 29 2022

...A strong thunderstorm will impact portions of central Mobile
County through 600 PM CDT...

At 514 PM CDT, National Weather Service doppler radar indicated a
strong thunderstorm 6 miles southeast of I10 And I65, or 7 miles east
of Theodore, moving north at 20 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Midtown Mobile, Downtown Mobile, Prichard, Chickasaw, I65 And I165
and I10 And I65.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 1000 PM CDT for southwestern
Alabama.

&&

LAT...LON 3059 8812 3057 8810 3057 8809 3059 8811
      3061 8810 3062 8810 3060 8812 3076 8816
      3080 8803 3068 8802 3069 8801 3067 8802
      3075 8804 3074 8805 3066 8803 3066 8804
      3064 8806 3061 8805 3052 8809
TIME...MOT...LOC 2214Z 172DEG 20KT 3056 8805

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

CGAL