Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, MS

April 23, 2021West Feliciana Parish, Louisiana

NWS Jackson, MS issued this special weather statement at Apr 23, 2021, 11:38 PM CDT for West Feliciana Parish, Louisiana. It was in force for 22 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
Apr 23, 2021, 11:38 PM CDT (04:38 UTC)
Expired
Apr 24, 2021, 12:00 AM CDT
In force
22 min
Issued by
NWS Jackson, MS

County West Feliciana Parish, LA

The radar

The Ft Polk radar (KPOE), 127 km from the middle of the area, began a volume at 04:41 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 4.6 hours before the alert went out and 182 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, Lake Charles Mun, LA at 00:00Z on 2021-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 865 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, Lake Charles Mun, LA at 00:00Z on 2021-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 383 square meters per square second.1939587897117Sfc1 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
865 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
546 m above ground
0-6 km bulk shear
87 kt
0-1 km storm-relative helicity
383 m²/s²
0-3 km storm-relative helicity
442 m²/s²
Significant tornado parameter
2.4
Supercell composite
10.3

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 Jackson, MS wrote its last area forecast discussion before this special weather statement went out at Apr 23, 9:14 PM CDT, 2 hours 24 minutes earlier.

Area forecast discussion, Apr 23, 9:14 PM CDT, 2 hours 24 minutes before
Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
914 PM CDT Fri Apr 23 2021

.UPDATE...
Updated for evening discussion.

&&

.DISCUSSION...
Local radars are lit up with a large area of moderate rain with
embedded thunderstorms, the greatest coverage of which is south of
Interstate 20. Surface analysis suggests a warm front from just
south of Winnsboro, Louisiana To just south of Hattiesburg. The
warm front may not move much farther north until later tonight as
the shortwave trough comes closer to our CWA. Thus the area south
of Interstate 20 will see the greatest chance for severe storms
and potential for flash flooding tonight. A Tornado Watch has been
issued for this area until 4 AM and a Flash Flood Watch remains in
effect until 9 AM.

Prior discussion below:

Tonight through Saturday...Surface high pressure continues to
steadily slide off the East Coast this afternoon, allowing
moisture to subtly return to the region. As both moisture and flow
increase throughout the various levels of the atmosphere, ahead
of a developing storm system to the west, showers will likewise
continue to increase across the CWA through the remainder of the
day, with an isolated thunderstorm possible.

Tonight, a shortwave embedded in zonal flow aloft will shift west to
east across the region.  A surface low associated with this trough
will shift east northeast from out of Texas and across North
Mississippi in the process.  A warm front will begin lifting
northward into the CWA this evening into tonight, with a cold front
eventually dragging east through the CWA late Saturday afternoon.

Increasing wind shear across the forecast area tonight, in addition
to increasingly instability, mainly south of the interstate 20
corridor, could result in some severe storms across portions of the
CWA tonight into Saturday morning.  Locations along the Highway 84
corridor will see the better threat of severe storms.  There, the
better conglomeration of shear, moisture, and forcing will exist.
Damaging wind gusts of 70 mph will be the primary concern with the
most intense storms, but a tornado will also be possible.  As
convection departs, models indicate a wake low developing across
central or southern portions of the CWA early Saturday morning. This
could result in some breezy winds first things Saturday.

Heavy rainfall in a short amount of time and training of convection
will also result in the potential for flash flooding, especially
across southern portions of the CWA tonight through Saturday
morning.  There, amounts ranging from 2-6 inches will be possible
through Saturday morning, as convection could potentially train
along the boundary and across the same locations.  As a result, a
Flash Flood Watch will be issued for much of the southern half of
the CWA through early Saturday morning.

Another potential for severe storms could exist across eastern
portions of the CWA late Saturday morning into Saturday afternoon.
Much of this pends on whether our airmass can recover fast enough,
before the cold front itself pushes through.  If instability can
recover fast enough, this along with remaining adequate shear, and
steep mid-level lapse rates, could result in some severe storms
across eastern portions of the CWA.  Up to golf ball size hail, and
damaging winds of 60 mph will be the main concerns with these
storms. This activity will exit east into Alabama by late afternoon.
/19/

Saturday night through Thursday...Dry weather looks to return to the
region Saturday night as the frontal system moves off to the east
and high pressure begins moving in. Dry weather continues Sunday and
Monday as high pressure settles in across the region. Temperatures
will be warming up, with highs Sunday mainly in the middle to upper
70s, then lower to middle 80s on Monday. Chances for showers and
storms look to return late Tuesday in the west well out ahead of an
approaching frontal system. Chances for showers and storms will
exist area wide Wednesday and Thursday as the frontal system
approaches and moves through the area. Highs Tuesday and Wednesday
will mainly be in the lower to middle 80s, then cooling to the 70s
by Thursday. /27/

&&

.AVIATION...
00Z TAF discussion:
VFR conditions were still observed areawide at 2330Z but a large
area of TSRA were noted on radar just west of the MS river.
Widespread TSRA tonight and Saturday morning will lead to poor
flying conditions with MVFR/IFR cigs and vsbys prevailing until
Saturday aftn before improving. A south wind with gusts to 20kts
is expected to develop later tonight followed by a wind shift to
the nw with gusts to 25KTs with the passage of a cold front
Saturday as well. /22/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       58  80  53  77 / 100  38   2   0
Meridian      58  80  52  78 / 100  57   4   0
Vicksburg     61  80  54  78 / 100  22   1   0
Hattiesburg   63  82  56  80 / 100  54   2   0
Natchez       61  81  55  79 / 100  15   1   0
Greenville    56  75  51  75 / 100  30   1   1
Greenwood     57  75  52  76 / 100  43   2   1

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Flash Flood Watch until 9 AM CDT Saturday for MSZ047>066-072>074.

LA...Flash Flood Watch until 9 AM CDT Saturday for LAZ023>026.

AR...None.

&&

19/22/27
Hazardous weather outlook, Apr 23, 3:41 PM CDT, 7 hours 57 minutes before
Hazardous Weather Outlook
National Weather Service Jackson MS
341 PM CDT Fri Apr 23 2021

ARZ074-LAZ007>009-015-MSZ040-041-241100-
Ashley-Morehouse-West Carroll-East Carroll-Richland-Issaquena-
Sharkey-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of southeast
Arkansas, northeast Louisiana, and west central Mississippi.

.DAY ONE...Tonight and Saturday...

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Tonight

FLOODING
THREAT...Limited
TIMING...Tonight

Severe thunderstorms are possible. Some thunderstorms could
produce damaging winds of 60 to 70 mph, and possibly a tornado.

(https://www.weather.gov/images/jan/graphicast/1.png)

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday Night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight.

ARZ075-MSZ018-034-241100-
Chicot-Bolivar-Washington-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of southeast
Arkansas, and northwest Mississippi.

.DAY ONE...Tonight and Saturday...

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Tonight

FLOODING
THREAT...Limited
TIMING...Tonight

Isolated severe thunderstorms are possible. Some thunderstorms
could produce damaging wind gusts up to 60 mph.

(https://www.weather.gov/images/jan/graphicast/1.png)

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday...

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight.

MSZ019-025-027-028-035>037-241100-
Sunflower-Leflore-Carroll-Montgomery-Humphreys-Holmes-Attala-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of central
Mississippi, north central Mississippi, and northwest
Mississippi.

.DAY ONE...Tonight and Saturday...

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Tonight through Saturday

FLOODING
THREAT...Limited
TIMING...Tonight

Isolated severe thunderstorms are possible. Some thunderstorms
could produce damaging wind gusts up to 60 mph.

(https://www.weather.gov/images/jan/graphicast/1.png)

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday...

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

MSZ032-033-038-039-044>046-241100-
Choctaw-Oktibbeha-Winston-Noxubee-Leake-Neshoba-Kemper-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of central
Mississippi, east central Mississippi, and northeast Mississippi.

.DAY ONE...Tonight and Saturday...

FLOODING
THREAT...Limited
TIMING...Tonight

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Mainly Saturday

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

Severe thunderstorms are possible mainly Saturday. Some
thunderstorms could produce damaging winds of 60 mph, and hail up to
the size of golf balls.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday...

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

MSZ029>031-241100-
Webster-Clay-Lowndes-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of north central
Mississippi, and northeast Mississippi.

.DAY ONE...Tonight and Saturday...

FLOODING
THREAT...Limited
TIMING...Tonight

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Saturday

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

Severe thunderstorms are possible Saturday. Some thunderstorms
could produce damaging winds of 60, and hail up to the size of
golf balls.

(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday...

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region Saturday.

MSZ042-043-241100-
Yazoo-Madison MS-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of central
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Mainly Tonight

FLOODING
THREAT...Limited
TIMING...Tonight

Severe thunderstorms are possible. Some thunderstorms could
produce damaging winds of 60 to 70 mph, and possibly a tornado.

(https://www.weather.gov/images/jan/graphicast/1.png)

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

LAZ016-023-025-MSZ047-241100-
Madison LA-Franklin LA-Tensas-Warren-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of northeast
Louisiana, and west central Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Tonight

FLOODING
THREAT...Elevated
TIMING...Tonight

Severe thunderstorms are possible. Some thunderstorms could
produce damaging winds of 60 to 70 mph, and possibly a tornado.

(https://www.weather.gov/images/jan/graphicast/1.png)

Areas of flash flooding likely and some roads could be flooded or
closed. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight.

MSZ048-049-241100-
Hinds-Rankin-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of central
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Mainly Tonight

FLOODING
THREAT...Elevated
TIMING...Tonight

Severe thunderstorms are possible. Some thunderstorms could
produce damaging winds of 60 to 70 mph, and possibly a tornado.

(https://www.weather.gov/images/jan/graphicast/1.png)

Areas of flash flooding likely and some roads could be flooded or
closed. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

MSZ050>052-056>058-241100-
Scott-Newton-Lauderdale-Smith-Jasper-Clarke-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of central
Mississippi, and east central Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Tonight through Saturday

FLOODING
THREAT...Elevated
TIMING...Tonight

Severe thunderstorms are possible. Some thunderstorms could
produce damaging winds of 60 to 70 mph, and possibly a tornado.

(https://www.weather.gov/images/jan/graphicast/1.png)

Areas of flash flooding likely and some roads could be flooded or
closed. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

LAZ024-026-MSZ059>061-241100-
Catahoula-Concordia-Jefferson-Adams-Franklin MS-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of northeast
Louisiana, and southwest Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Tonight

FLOODING
THREAT...Significant
TIMING...Tonight

Severe thunderstorms are likely. Some thunderstorms may produce
damaging winds of 70 mph, and possibly a tornado.

(https://www.weather.gov/images/jan/graphicast/1.png)

Widespread flash flooding is likely and significant flooding is
possible. Many roads could be flooded or closed and some
structural flooding and water rescues are likely. Moderate river
flooding will also be likely.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight.

MSZ053-241100-
Claiborne-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of southwest
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Tonight

FLOODING
THREAT...Elevated
TIMING...Tonight

Severe thunderstorms are likely. Some thunderstorms may produce
damaging winds of 70 mph, and possibly a tornado.

(https://www.weather.gov/images/jan/graphicast/1.png)

Areas of flash flooding likely and some roads could be flooded or
closed. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight.

MSZ054-055-062>066-241100-
Copiah-Simpson-Lincoln-Lawrence-Jefferson Davis-Covington-Jones-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of central
Mississippi, south central Mississippi, and southeast
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Mainly Tonight

FLOODING
THREAT...Significant
TIMING...Tonight

Severe thunderstorms are likely. Some thunderstorms may produce
damaging winds of 70 mph, and possibly a tornado.

(https://www.weather.gov/images/jan/graphicast/1.png)

Widespread flash flooding is likely and significant flooding is
possible. Many roads could be flooded or closed and some
structural flooding and water rescues are likely. Moderate river
flooding will also be likely.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

MSZ072>074-241100-
Marion-Lamar-Forrest-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of south central
Mississippi, and southeast Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Mainly Tonight

FLOODING
THREAT...Elevated
TIMING...Tonight

Severe thunderstorms are likely. Some thunderstorms may produce
damaging winds of 70 mph, and possibly a tornado.

(https://www.weather.gov/images/jan/graphicast/1.png)

Areas of flash flooding likely and some roads could be flooded or
closed. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

MSZ026-241100-
Grenada-
341 PM CDT Fri Apr 23 2021

This hazardous weather outlook is for portions of north central
Mississippi.

.DAY ONE...Tonight and Saturday

FLOODING
THREAT...Limited
TIMING...Tonight

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Saturday

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

Isolated severe thunderstorms are possible. Some thunderstorms
could produce damaging wind gusts up to 60 mph.

(https://www.weather.gov/images/jan/graphicast/1.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region Saturday.

19

&&

...HAZARD LEGEND...

*SEVERE THUNDERSTORMS*
High...Significant severe thunderstorms and tornadoes are
 likely with strong or violent tornadoes possible.
Moderate...Significant severe thunderstorms and tornadoes are
 likely with strong tornadoes possible.
Enhanced...Severe thunderstorms are likely and tornadoes are
 possible.
Slight...Severe thunderstorms and tornadoes are possible.
Marginal...Isolated severe thunderstorms are possible.

*FLOODING*
Extreme...Widespread and significant flooding is likely.
Significant...Widespread flash flooding is likely
 and significant flooding is possible.
Elevated...Areas of flash flooding likely.
Limited...Localized flash flooding is possible.

...USEFUL WEATHER WEB PAGES (URLS)...

NWS JAN Home page...
   https://www.weather.gov/jan
Stay Aware, Stay Safe NWS JAN Briefing Page...
   https://www.weather.gov/jan/safe
Latest Weather Briefing...
   https://www.weather.gov/jan/weather_briefing

Find NWS JAN on Facebook...
   https://www.facebook.com/NWSJacksonMS
Follow NWS JAN on Twitter...
   @NWSJacksonMS
Follow NWS JAN on Youtube...
   https://www.youtube.com/user/NWSJacksonMiss

...ADDITIONAL URLS FOR SEVERE WEATHER ISSUES...

Storm Prediction Center (SPC)...
   https://www.spc.noaa.gov/
Meso Analysis...
   https://www.spc.noaa.gov/exper/mesoanalysis/
Day 1 through 3 Outlooks...
   https://www.spc.noaa.gov/products/outlook/
Storm Reports...
   https://www.spc.noaa.gov/climo/online/
...ADDITIONAL URLS FOR FLOODING ISSUES...

Current Watches and Warnings...
   https://www.weather.gov/jan/safe_HeavyRain

Observed Precipitation Images...
   https://www.weather.gov/jan/precipmaps

River Forecast Center...
   https://www.weather.gov/lmrfc/
Significant River Flood Outlook...
   https://www.wpc.ncep.noaa.gov/nationalfloodoutlook/index.html
Day 1 through 3 Excessive Rainfall...
   https://www.wpc.ncep.noaa.gov/qpf/excess_rain.shtml
Excessive Rainfall Discussion...
   https://www.wpc.ncep.noaa.gov/discussions/qpferd.html
Day 1 through 7 QPF...
   https://www.wpc.ncep.noaa.gov/qpf/qpf2.shtml
QPF Discussion...
   https://www.wpc.ncep.noaa.gov/discussions/qpfpfd.html

In the hours before

Special weather statement, Apr 23, 10:04 PM CDT, 1 hour 34 minutes before
Special Weather Statement
National Weather Service Jackson MS
1004 PM CDT Fri Apr 23 2021

MSZ072-240330-
Marion MS-
1004 PM CDT Fri Apr 23 2021

...A STRONG THUNDERSTORM WILL AFFECT MARION COUNTY UNTIL 1030 PM
CDT...

At 1004 PM CDT, Meteorologists were tracking a strong thunderstorm
near Dexter, or near Kokomo, moving northeast at 50 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Pickwick around 1015 PM CDT.
  Columbia around 1020 PM CDT.
  Pinebur around 1025 PM CDT.
  Improve around 1030 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

A Tornado Watch remains in effect until 400 AM CDT for south central
and southeastern Mississippi.

LAT...LON 3109 8992 3109 8993 3111 8993 3111 8994
      3113 8994 3113 8999 3125 9004 3138 8966
      3136 8965 3110 8966 3107 8989 3107 8992
TIME...MOT...LOC 0304Z 245DEG 45KT 3113 9001

TW
Local storm report, Apr 23, 10:31 PM CDT, 1 hour 7 minutes before
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Special weather statement, Apr 23, 10:35 PM CDT, 1 hour 3 minutes before
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Local storm report, Apr 23, 10:36 PM CDT, 1 hour 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1036 PM CDT FRI APR 23 2021

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

1022 PM     TSTM WND GST     COLUMBIA                31.26N 89.83W
04/23/2021  E45 MPH          MARION             MS   PUBLIC

            ESTIMATED WIND GUSTS OF 40 TO 50 MPH WERE
            ENOUGH TO BLOW DOWN A FEW SMALL TREE LIMBS
            IN THE COLUMBIA AREA. PEA SIZE HAIL ALSO
            FELL.

&&

NF
Local storm report, Apr 23, 11:04 PM CDT, 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1104 PM CDT FRI APR 23 2021

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

1040 PM     NON-TSTM WND DMG 4 NNE PETAL             31.40N 89.23W
04/23/2021                   FORREST            MS   EMERGENCY MNGR

            TREES DOWNED AT ROBERTSON RD AND ROBERTSONS
            CROSS RD AND AT OTIS LEE RD AND LYNN RAY RD.
            BASED ON TIME OF REPORTS, APPEARED TO OCCUR
            IN A NORTHEASTWARD MOVING BAND OF SHOWERS
            WITH GUSTY WINDS.

&&

DL
Special weather statement, Apr 23, 11:38 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Jackson MS
1138 PM CDT Fri Apr 23 2021

LAZ026-240500-
Concordia LA-
1138 PM CDT Fri Apr 23 2021

...A STRONG THUNDERSTORM WILL AFFECT FAR SOUTHERN CONCORDIA PARISH
THROUGH MIDNIGHT CDT...

At 1137 PM CDT, Meteorologists were tracking a strong thunderstorm
near the Old River Control Structure, or 10 miles northeast of
Simmesport, moving northeast at 55 mph.

Dime size hail will be possible with this storm.

This storm will remain over mainly rural areas of southern Concordia
Parish.

A Tornado Watch remains in effect until 400 AM CDT for northeastern
Louisiana.

LAT...LON 3104 9165 3104 9172 3107 9171 3109 9172
      3110 9170 3112 9171 3117 9159 3113 9163
      3111 9163 3107 9157 3104 9156 3102 9158
      3100 9164 3097 9166
TIME...MOT...LOC 0437Z 240DEG 49KT 3105 9165

DL

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 7:55 PM CDTSevere Thunderstorm WarningJANAdams, Jefferson29 min
Apr 23, 8:39 PM CDTSpecial Weather StatementJANAdams36 min
Apr 23, 9:08 PM CDTSpecial Weather StatementJANMarion52 min
Apr 23, 9:14 PM CDTSpecial Weather StatementJANFranklin, Jefferson46 min
Apr 23, 9:31 PM CDTRiver Flood WarningJANJones36 hr
Apr 23, 10:04 PM CDTSpecial Weather StatementJANMarion26 min
Apr 23, 10:35 PM CDTSpecial Weather StatementJANForrest, Lamar55 min
Apr 24, 12:50 AM CDTSpecial Weather StatementJANWilkinson25 min
Apr 24, 12:55 AM CDTSpecial Weather StatementJANForrest50 min
Apr 24, 1:01 AM CDTSevere Thunderstorm WarningJANForrest, Lamar44 min
Apr 24, 1:30 AM CDTSevere Thunderstorm WarningJANFranklin, Lincoln39 min
Apr 24, 1:43 AM CDTSpecial Weather StatementJANJefferson Davis, Lawrence62 min
Apr 24, 1:56 AM CDTSevere Thunderstorm WarningJANCovington, Jefferson Davis, Lawrence64 min
Apr 24, 2:00 AM CDTSpecial Weather StatementJANForrest30 min
Apr 24, 2:05 AM CDTSevere Thunderstorm WarningJANLawrence25 min
Apr 24, 2:35 AM CDTSpecial Weather StatementJANHinds, Rankin55 min
Apr 24, 2:47 AM CDTSevere Thunderstorm WarningJANJasper, Jones, Smith47 min
Apr 24, 2:58 AM CDTSevere Thunderstorm WarningJANHinds, Madison, Rankin, Scott, Smith51 min
Apr 24, 3:44 AM CDTSpecial Weather StatementJANForrest31 min
Apr 24, 3:55 AM CDTSevere Thunderstorm WarningJANForrest6 min
Apr 24, 4:27 AM CDTSpecial Weather StatementJANWashington48 min
Apr 24, 6:23 AM CDTSpecial Weather StatementJANMadison, Rankin, Scott52 min
Apr 24, 8:56 AM CDTRiver Flood WarningJANLeake25 hr
Apr 24, 9:00 AM CDTRiver Flood WarningJANLawrence4 days
Apr 24, 9:00 AM CDTRiver Flood WarningJANCopiah, Simpson3 days
Apr 24, 9:00 AM CDTRiver Flood WarningJANMarion3 days
Apr 23, 7:20 PM CDTSpecial Weather StatementJANCatahoula, Concordia40 min
Apr 23, 7:30 PM CDTSevere Thunderstorm WarningJANCatahoula, Concordia45 min
Apr 23, 8:03 PM CDTSpecial Weather StatementJANConcordia27 min
Apr 23, 9:35 PM CDTSevere Thunderstorm WarningJANCatahoula, Concordia36 min

Nearby

Special Weather Statements in Louisiana, 2021Every special weather statement in 2021

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.