Flash Flood Warning 22, NWS Memphis, TN

691 
WGUS54 KMEG 290511
FFWMEG
MSC009-117-139-145-290630-
/O.EXT.KMEG.FF.W.0022.000000T0000Z-200829T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
1211 AM CDT Sat Aug 29 2020

The National Weather Service in Memphis has extended the

* Flash Flood Warning for...
  South Central Benton County in northeastern Mississippi...
  West Central Prentiss County in northeastern Mississippi...
  Southern Tippah County in northeastern Mississippi...
  Union County in northeastern Mississippi...

* Until 130 AM CDT.

* At 1211 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Booneville, New Albany, Keownville, New Harmony, Etta, Pinedale, 
  Wheeler, Sherman, Hickory Flat, Myrtle, Dumas, Blue Springs, 
  Concord, Baker, Union Hill, Pumpkin Center, Glenfield, Beacon 
  Hill, Shari and Cotton Plant.

Additional rainfall amounts up to 1 inch are possible in the warned 
area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3461 8930 3464 8853 3461 8855 3451 8873
      3450 8891 3436 8885 3436 8893 3438 8893
      3438 8925 3458 8925 3458 8930

FLASH FLOOD...RADAR INDICATED

$$

317 
WGUS74 KMEG 290637 RRA
FFSMEG

Flash Flood Statement
National Weather Service Memphis TN
137 AM CDT Sat Aug 29 2020

MSC009-117-139-145-290647-
/O.EXP.KMEG.FF.W.0022.000000T0000Z-200829T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Benton MS-Prentiss MS-Tippah MS-Union MS-
137 AM CDT Sat Aug 29 2020

...FLASH FLOOD WARNING HAS EXPIRED FOR SOUTH CENTRAL BENTON, WEST 
CENTRAL PRENTISS, SOUTHERN TIPPAH AND UNION COUNTIES...

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

A Flash Flood Watch remains in effect until 700 AM CDT for a portion 
of North Mississippi.

LAT...LON 3461 8930 3464 8853 3461 8855 3451 8873
      3450 8891 3436 8885 3436 8893 3438 8893
      3438 8925 3458 8925 3458 8930

$$

Area Forecast Discussion...UPDATED
National Weather Service Memphis TN
1038 PM CDT Fri Aug 28 2020

.UPDATE...

Updated for 00Z aviation discussion.

&&

.PREV DISCUSSION... /issued 1029 PM CDT Fri Aug 28 2020/

UPDATE...

Showers and thunderstorms continue to develop across Northeast
Mississippi this evening. The convection is on the southern flank
of Tropical Depression Laura. PW's are quite high in this region
and are in an area of favorable moisture transport parameters. An
850 mb low-level jet is helping to backbuild the storms allowing
for training over the same area. The convection may linger into
the overnight hours. As a result, expanded the Flash Flood Watch
earlier to add a few more counties back in and to continue it
through 12Z.

With the tropical airmass in place, humidity will remain sky high
on Saturday. The combination of sunshine and the high humidity
will allow for heat indices to climb above 105 degrees across much
of the area thus went ahead and issued a Heat Advisory for
portions of the area for Saturday afternoon.

KRM

&&

.DISCUSSION.../issued 204 PM CDT Fri Aug 28 2020/

The remnants of Laura is located over far Southeast Missouri and
seems to be tracking a bit more toward the Northeast than due East
as guidance has been suggesting for the past several days. Winds
have subsided below Advisory criteria across portions of East
Arkansas and North Mississippi. Farther East sustained winds winds
are still sustained 15 to 25 mph with gusts up around 40 mph
possible. If Laura continues to shift off to the Northeast, the
wind advisory(s) may be cancelled this afternoon.

Tropical rain continues to fall across much of the
Midsouth despite an overall unimpressive appearance on radar,
rainfall rates have been noted in excess of two inches per hour
through the day. A Flash Flood Advisory remains in effect for
portions of East Arkansas and Northwest Mississippi through 7 pm.
Farther East Flash Flood Advisories continue through the night
for much of West Tennessee and North Mississippi.

A tornado watch remains in for portions of Northeast Mississippi. A
few mini supercells may pose a risk for a tornado through the
early afternoon in northeast Mississippi. VAD data show around
40kt of 0-2km shear with CAPE values up to about 1,000k/kg. As
Laura weakens and tracks away from the area winds should shift
more Southwesterly lowering the effective shear across the area
and reducing the threat of tornadoes. The current Tornado watch
expires at 4pm.

Unfortunately it does not look like we will see a substantial
break in adverse weather anytime soon. Tomorrow looks hot but
mostly dry. Tropical dew points will linger across the Midsouth
with abundant sunshine expected especially along and West of the
Mississippi river. High temperatures are expected to climb into
the low to middle 90s with dew points in the middle 70s resulting
in heat indices from 103 to 109 degrees. A Heat Advisory will
likely be required for portions of West Tennessee along The
Mississippi River and East Arkansas.

A cold front is expected to move into Northern portions of the
Midsouth late tomorrow, stalling tomorrow night into Sunday
along a line from Tupelo, to Memphis to Little Rock. Showers and
thunderstorms are expected to move into East Arkansas from the
West late Saturday night, likely focused along and to the South of
this boundary. The Storm Prediction Center has most of East
Arkansas in a slight risk for severe thunderstorms Saturday night
with a Marginal risk across the remainder of the Midsouth.
Damaging wind is expected to be the primary threat as a weakening
remnant MCV and associated mid-level vorticity maximum approaches
from the West.

The front is expected to lift to the North Sunday. Showers and
thunderstorms are expected to be widespread across the Midsouth as
we remain in a very unstable atmosphere. The storms Saturday
night may leave an outflow boundary across the Midsouth helping to
focus lift for additional strong to severe thunderstorms.
Damaging wind and large hail are possible. The Storm Prediction
Center has nearly all of the Midsouth in a Marginal Risk for
severe thunderstorms Sunday. High temperatures Sunday are expected
to be cooler, ranging from the lower 80s in the far north, to
upper 80s in the South.

The upcoming work also looks wet and active. High temperatures
are expected to be mostly in the middle to upper 80s. Weak
Northwesterly flow will transition to strong Southwest flow by
Wednesday as a deep trough develops over the Plains. Guidance has
a deep cutoff low and associated trough approaching the
Mississippi River late Wednesday into Thursday. Expect multiple
rounds of rain Tuesday through Thursday. Strong to severe storms
cannot be ruled out. Additionally, due to recent rain and expected
rain this weekend, flooding could become an issue next week.

30

&&

.AVIATION...00Z TAFs

Most TAF sites will be VFR throughout the forecast period.
However, showers and storms continue to push through MS and over
TUP which will bring low ceilings through tomorrow afternoon.
Storms will finally move out in the next few hours as Laura pushes
east-northeast. Ceilings will gradually rise as the storms move
out overnight. Winds will be light from the south- southwest.

KRF

&&

.MEG WATCHES/WARNINGS/ADVISORIES...
AR...Heat Advisory from noon to 7 PM CDT Saturday for Clay-Craighead-
     Crittenden-Cross-Greene-Lee AR-Mississippi-Phillips-
     Poinsett-St. Francis.

MO...Heat Advisory from noon to 7 PM CDT Saturday for Dunklin-
     Pemiscot.

MS...Heat Advisory from noon to 7 PM CDT Saturday for Coahoma-DeSoto-
     Lafayette-Marshall-Panola-Quitman-Tallahatchie-Tate-Tunica-
     Yalobusha.

     Flash Flood Watch until 7 AM CDT Saturday for Alcorn-Benton MS-
     Itawamba-Lee MS-Pontotoc-Prentiss-Tippah-Tishomingo-Union.

TN...Heat Advisory from noon to 7 PM CDT Saturday for Dyer-Fayette-
     Haywood-Lake-Lauderdale-Obion-Shelby-Tipton.

&&

Hazardous Weather Outlook
National Weather Service Memphis TN
836 PM CDT Fri Aug 28 2020

ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017-
020>024-TNZ001>004-019>022-048>055-088>092-300345-
Alcorn-Benton MS-Benton TN-Calhoun-Carroll-Chester-Chickasaw-Clay-
Coahoma-Craighead-Crittenden-Crockett-Cross-DeSoto-Decatur-
Dunklin-Dyer-Fayette-Gibson-Greene-Hardeman-Hardin-Haywood-
Henderson-Henry-Itawamba-Lafayette-Lake-Lauderdale-Lee AR-Lee MS-
Madison-Marshall-McNairy-Mississippi-Monroe-Obion-Panola-Pemiscot-
Phillips-Poinsett-Pontotoc-Prentiss-Quitman-Shelby-St. Francis-
Tallahatchie-Tate-Tippah-Tipton-Tishomingo-Tunica-Union-Weakley-
Yalobusha-
836 PM CDT Fri Aug 28 2020

This hazardous weather outlook is for portions of East Arkansas...
the Missouri Bootheel...North Mississippi...and West Tennessee.

.DAY ONE...Tonight

There is a diminishing risk for severe thunderstorms the rest of
this evening across Northeast Mississippi. However, the flooding
threat is increasing across portions of Northeast Mississippi
that will continue through the overnight hours as a band of
showers and thunderstorms is slowly moving through the region. The
primary risk will be from flash flooding.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Heat indices may exceed 105 degrees Saturday afternoon, especially
along and West of the Mississippi River. A heat advisory has been
issued for Eastern Arkansas, the Missouri Bootheel, Northwest
Mississippi and portions of West Tennessee.

There is a Slight Risk of severe thunderstorms over east Arkansas
Saturday night, accompanied by a Marginal Risk over most of the
remainder of the Midsouth. Primary risks include damaging winds
and large hail.

There is a Marginal Risk for severe thunderstorms over most of
the Midsouth on Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

KRM

Special Weather Statement
National Weather Service Memphis TN
704 PM CDT Fri Aug 28 2020

MSZ003-004-014-290045-
Tippah MS-Union MS-Benton MS-
704 PM CDT Fri Aug 28 2020

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 745 PM CDT
FOR...

Southern Tippah County in northeastern Mississippi...
Union County in northeastern Mississippi...
Southeastern Benton County in northeastern Mississippi...

At 703 PM CDT...a strong thunderstorm producing winds at least 40 mph
was located 8 miles east of Bethlehem, or 12 miles northwest of New
Albany, moving east at 40 mph.

Very heavy rain along with continuous cloud to ground lightning are
also possible with this thunderstorm.

People in southern Tippah...Union and southeastern Benton Counties
should monitor this storm closely.

LAT...LON 3460 8872 3460 8873 3457 8873 3450 8877
      3449 8879 3445 8879 3439 8882 3451 8925
      3458 8925 3458 8930 3471 8926 3466 8872
TIME...MOT...LOC 0003Z 281DEG 36KT 3461 8919

SJM

Special Weather Statement
National Weather Service Memphis TN
724 PM CDT Fri Aug 28 2020

MSZ005-006-009-290130-
Tishomingo MS-Alcorn MS-Prentiss MS-
724 PM CDT Fri Aug 28 2020

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 830 PM CDT
FOR...

Tishomingo County in northeastern Mississippi...
Southeastern Alcorn County in northeastern Mississippi...
Northern Prentiss County in northeastern Mississippi...

At 724 PM CDT...a strong thunderstorm producing winds at least 40 mph
was located over Hinkle, or 8 miles north of Booneville, moving east
at 40 mph.

Very heavy rain along with continuous cloud to ground lightning are
also possible with this thunderstorm.

People in Tishomingo...southeastern Alcorn and northern Prentiss
Counties should monitor this storm closely.

LAT...LON 3457 8814 3471 8872 3490 8866 3489 8810
TIME...MOT...LOC 0024Z 281DEG 36KT 3479 8857

SJM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
908 PM CDT FRI AUG 28 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0245 PM     TSTM WND DMG     CORINTH                 34.94N  88.52W
08/28/2020                   ALCORN             MS   TRAINED SPOTTER

            DAMAGE TO A STORE FRONT AND RADIO TOWER. LARGE TREE
            DOWN ON HOME.

&&

MJ

Special Weather Statement
National Weather Service Memphis TN
910 PM CDT Fri Aug 28 2020

MSZ017-290245-
Itawamba MS-
910 PM CDT Fri Aug 28 2020

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 945 PM CDT
FOR...

Northern Itawamba County in northeastern Mississippi...

At 910 PM CDT...a strong thunderstorm producing winds at least 40 mph
was located over Sandy Springs, or 9 miles north of Fulton, moving
east at 35 mph.

Very heavy rain along with continuous cloud to ground lightning are
also possible with this thunderstorm.

People in northern Itawamba County should monitor this storm closely.

LAT...LON 3430 8817 3425 8818 3431 8848 3447 8845
      3446 8816
TIME...MOT...LOC 0210Z 278DEG 31KT 3439 8838

SJM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
916 PM CDT FRI AUG 28 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0315 PM     TSTM WND DMG     HOULKA                  34.03N  89.02W
08/28/2020                   CHICKASAW          MS   SOCIAL MEDIA

            LARGE TREE SPLIT IN HOULKA.

&&

MJ

Special Weather Statement
National Weather Service Memphis TN
938 PM CDT Fri Aug 28 2020

MSZ014>017-290315-
Itawamba MS-Pontotoc MS-Union MS-Lee MS-
938 PM CDT Fri Aug 28 2020

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 1015 PM CDT
FOR...

West central Itawamba County in northeastern Mississippi...
Eastern Pontotoc County in northeastern Mississippi...
Union County in northeastern Mississippi...
Lee County in northeastern Mississippi...

At 938 PM CDT...a strong thunderstorm producing winds at least 40 mph
was located near New Harmony, or near New Albany, moving southeast at
35 mph.

Very heavy rain along with continuous cloud to ground lightning are
also possible with this thunderstorm.

People in west central Itawamba...eastern Pontotoc...Union and Lee
Counties should monitor this storm closely.

LAT...LON 3407 8891 3408 8892 3448 8916 3456 8886
      3421 8845
TIME...MOT...LOC 0238Z 316DEG 29KT 3443 8896

SJM