Alert archive / Mississippi / Special Weather Statements in 2020

Special Weather Statement, NWS Jackson, MS

April 18, 2020Simpson County, Mississippi

NWS Jackson, MS issued this special weather statement at Apr 18, 2020, 11:21 PM CDT for Simpson County, Mississippi. It was in force for 24 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 18, 2020, 11:21 PM CDT (04:21 UTC)
Expired
Apr 18, 2020, 11:45 PM CDT
In force
24 min
Issued by
NWS Jackson, MS

County Simpson County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 50 km from the middle of the area, began a volume at 04:23 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.

What was reported inside it

TimeReportWhereRemark
Apr 18, 11:42 PM CDTHAIL 0.52 Ene Magee, MSHAIL WAS REPORTED IN THE DRY CREEK AREA NEAR MAGEE. PEA TO HALF INCH SIZED COULD BE SEEN FROM PICTURE.
Apr 18, 11:42 PM CDTHAIL 0.72 Ene Magee, MSCORRECTS PREVIOUS HAIL REPORT FROM 2 ENE MAGEE. CORRECTS PREVIOUS HAIL REPORT FROM 2 ENE MAGEE. HAIL WAS REPORTED IN THE DRY CREEK AREA NEAR MAGEE. APPROXIMATELY DIME SIZE COULD BE SEEN FROM PICTURE.
Apr 18, 11:42 PM CDTHAIL 0.72 Ene Magee, MSCORRECTS PREVIOUS HAIL REPORT FROM 2 ENE MAGEE. HAIL WAS REPORTED IN THE DRY CREEK AREA NEAR MAGEE. PEA TO HALF INCH SIZED COULD BE SEEN FROM PICTURE.
Apr 18, 11:42 PM CDTHAIL 12 Ene Magee, MSCORRECTS PREVIOUS HAIL REPORT FROM 2 ENE MAGEE. CORRECTS PREVIOUS HAIL REPORT FROM 2 ENE MAGEE. CORRECTS PREVIOUS HAIL REPORT FROM 2 ENE MAGEE. HAIL WAS REPORTED IN THE DRY CREEK AREA NEAR MAGEE. APPROXIMATELY DIME TO QUARTER SIZE HAIL COULD BE SEEN FROM PICTU

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 4.4 hours before the alert went out and 54 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, Jackson, MS at 00:00Z on 2020-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Jackson, MS at 00:00Z on 2020-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1408 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
191 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

508 
WWUS84 KJAN 190421
SPSJAN

Special Weather Statement
National Weather Service Jackson MS
1121 PM CDT Sat Apr 18 2020
 
MSZ055-190445-
Simpson MS-
1121 PM CDT Sat Apr 18 2020

...A STRONG THUNDERSTORM WILL AFFECT SIMPSON COUNTY UNTIL 1145 PM
CDT...

At 1121 PM CDT, Meteorologists were tracking a strong thunderstorm
near Shivers, or near Pinola, moving northeast at 45 mph.

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

This strong thunderstorm will be near...
  Pinola around 1130 PM CDT.
  Mendenhall around 1140 PM CDT.
  Magee, Martinville and Sanatorium around 1145 PM CDT.

Other locations impacted by this storm include D'Lo and Braxton.

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.

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.

&&

LAT...LON 3177 9013 3177 9011 3179 9011 3179 9014
      3180 9015 3183 9014 3183 9013 3184 9016
      3186 9013 3189 9014 3205 8994 3205 8980
      3181 8965 3179 8965 3177 8975 3175 9012
TIME...MOT...LOC 0421Z 244DEG 38KT 3183 9004 

$$

NF

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 18, 10:12 PM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, Apr 18, 10:12 PM CDT, 1 hour 9 minutes before
Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
1012 PM CDT Sat Apr 18 2020

...SEVERE STORMS LIKELY ACROSS MUCH OF THE ARKLAMISS SUNDAY INTO
SUNDAY NIGHT...

.UPDATE...
Updated for evening discussion.

&&

.DISCUSSION...
Local radars had scattered storms tracking east along the Highway
84 corridor. This was nearly along the stalled frontal boundary as
Columbia and Hattiesburg were still reporting temperatures in the
lower 70s and dew points in the mid 60s. A couple of the storms
that track across our southeast most counties during the next
couple of hours could become strong with small hail and gusty
winds. The stalled boundary is expected to gradually move back to
the north later tonight as a warm front. There will be the
possibility of an isolated severe storm after midnight and from
the west as the warm front lifts north. This potential for severe
will continue into early Sunday morning. Temperatures are tricky
this evening as a large part of our CWA has already dropped close
to forecast minimum temperatures. Sunday morning lows will occur
just after midnight for the area north of the warm front.
Temperature curves and pops have been adjusted. /22/

Prior discussion below:

Tonight and Sunday...Surface frontal boundary has slowed to a
crawl over southern portions this afternoon. As surface high
pressure slips to the east of the Tennessee River Valley and
upstream storm system with developing surface low pressure pulls
into the Plains, flow will increase and become increasingly
southerly. This will begin lifting the frontal boundary back to
the north. Isentropic ascent overtop the boundary will lead to
elevated convection over much of the ArkLaMiss Delta region and
the possibility severe storms with hail being the main threat and
a threat for damaging wind closer to the surface frontal
interface.

A zone of heavy rain will develop along and north of the retreating
boundary as strong ascent combines with convective instability and
PWs from 1.5 to 1.75 inches for periods of thunderstorms repeatedly
moving over the same areas. Though the boundary will continue moving
north through the day, northern portions will be under these
conditions the longest where 3 to 5 inches could occur. This will
likely lead to flash flooding, especially in areas with ongoing
river flooding.

Further south in the warm sector, strong warming with dewpoints
rising into the lower 70s by afternoon will lead to surface CAPEs of
3000-4000 J/kg. Cold air aloft will yield 7C/km mid level lapse
rates and vertical totals in the upper 20s. While only around 15-20
knots of 0-1km bulk shear will exist early Sunday morning over the
area, values will rapidly increase from 30-40 knots during the
afternoon as the 50-60 knot low level jet moves across central and
southern portions. The lack of a focus in the warm sector will limit
convective coverage to isolated or scattered, but what does develop
will be supercellular and pose a damaging wind, large hail and
strong tornado potential. /GG/

Sunday Night through Friday...The threat for severe weather will be
ongoing across portions of the forecast area as the period begins
Sunday evening.  Ample instability, coupled with very strong wind
shear, and steep mid-level lapse rates currently looks to maintain
this threat across the CWA through late Sunday evening as the upper
level trough drives the strong cold front east through the region.
Damaging wind gusts, large hail, and tornadoes will remain possible
through this first half of the Sunday night period.  Some showers
will linger behind the front through midnight.  However as the
overnight hours progress, activity will exit east and out of the
forecast area as high pressure builds in from the west.

Quiet weather, along with slightly cooler drier conditions, will
exist across the region Monday into Tuesday.  The high will slide
further east of the region on Wednesday resulting in a return in
southerly flow.  This, as the pressure gradient tightens over the
region in response to a deepening and developing storm system
approaching from the west, will cause increased moisture return
across the CWA through Wednesday night.  Currently, it's during this
late Wednesday afternoon through early Thursday morning timeframe,
that perhaps another bout of severe weather could become possible
across the forecast area.  That said, confidence in including this
potential in this afternoon's HWO currently remains too low as there
remains some evolution and timing differences in the models.

Showers and storms currently look to exit the region through the
course of Thursday morning.  High pressure again builds into the
region from the west.  Overall, Friday looks to remain quiet, but
rain chances will again be on the increase late Friday night as
another system looks to swing east into the region. /19/

&&

.AVIATION...
00Z TAF discussion:
VFR conditions were observed areawide at 2330Z and VFR conditions
will prevail through 06Z. After 06Z cigs wl lower to MVFR/IFR as a
warm front moves north across the area. Scattered SHRA and TSRA
will develop after 06Z and become more widespread at GLH-GWO- GTR
around sunrise. IFR/MVFR cigs will prevail Sunday along with
additional TSRA activity but focused more central and south. /22/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       60  78  58  74 /  86  95  87   0
Meridian      59  79  58  76 /  80  95 100   0
Vicksburg     61  76  58  73 /  78  96  72   0
Hattiesburg   67  83  63  78 /  62  62 100   0
Natchez       62  78  61  73 /  57  88  64   0
Greenville    55  72  55  71 /  85  99  75   0
Greenwood     55  73  55  72 /  88  99  84   0

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Flash Flood Watch from 7 AM CDT Sunday through late Sunday night
     for MSZ027>033-035>059.

LA...Flash Flood Watch from 7 AM CDT Sunday through late Sunday night
     for LAZ009-016-025.

AR...None.

&&

19/22/GG
Hazardous weather outlook, Apr 18, 4:06 PM CDT, 7 hours 15 minutes before
Hazardous Weather Outlook
National Weather Service Jackson MS
406 PM CDT Sat Apr 18 2020

ARZ074-075-LAZ007-MSZ019-025-034-192115-
Ashley-Chicot-Morehouse-Sunflower-Leflore-Washington-
406 PM CDT Sat Apr 18 2020

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

.DAY ONE...Tonight through Sunday night

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Mainly Sunday

FLOODING
THREAT...Limited
TIMING...Sunday

Isolated severe thunderstorms capable of producing quarter size
hail will be possible late tonight into Sunday morning. Severe
thunderstorms will become likely by Sunday afternoon with
damaging winds up to 70 mph, large hail up to golf ball size and
tornadoes.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.png)

With 1 to 3 inches of rainfall possible, 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/3.png)

.DAYS TWO THROUGH SEVEN...Monday through Friday

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 Sunday night.

MSZ018-026-192115-
Bolivar-Grenada-
406 PM CDT Sat Apr 18 2020

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

.DAY ONE...Tonight through Sunday night

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Mainly Sunday

FLOODING
THREAT...Limited
TIMING...Sunday

Isolated severe thunderstorms capable of producing quarter size
hail will be possible late tonight into Sunday morning. Severe
thunderstorms are possible by Sunday afternoon with damaging
winds to 60 mph, hail at least to the size of quarters and
tornadoes.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.png)

With 1 to 3 inches of rainfall possible, 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/3.png)

.DAYS TWO THROUGH SEVEN...Monday through Friday

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 Sunday night.

MSZ027-028-032-035-192115-
Carroll-Montgomery-Choctaw-Humphreys-
406 PM CDT Sat Apr 18 2020

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

.DAY ONE...Tonight through Sunday night

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Mainly Sunday

FLOODING
THREAT...Elevated
TIMING...Sunday

Isolated severe thunderstorms capable of producing quarter size
hail will be possible late tonight into Sunday morning. Severe
thunderstorms will become likely by Sunday afternoon with
damaging winds up to 70 mph, large hail up to golf ball size and
tornadoes.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.png)

With 3 to 5 inches of rainfall expected, areas of flash flooding
are likely with some roads being flooded or closed. Some
structures may be potentially threatened by high water. River
flooding is also possible.

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

.DAYS TWO THROUGH SEVEN...Monday through Friday

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 Sunday night.

MSZ029-192115-
Webster-
406 PM CDT Sat Apr 18 2020

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

.DAY ONE...Tonight through Sunday night

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Mainly Sunday

FLOODING
THREAT...Elevated
TIMING...Sunday

Isolated severe thunderstorms capable of producing quarter size
hail will be possible late tonight into Sunday morning. Severe
thunderstorms are possible by Sunday afternoon with damaging
winds to 60 mph, hail at least to the size of quarters and
tornadoes.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.png)

With 3 to 5 inches of rainfall expected, areas of flash flooding
are likely with some roads being flooded or closed. Some
structures may be potentially threatened by high water. River
flooding is also possible.

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

.DAYS TWO THROUGH SEVEN...Monday through Friday

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 Sunday night.

MSZ031-033-192115-
Lowndes-Oktibbeha-
406 PM CDT Sat Apr 18 2020

This hazardous weather outlook is for portions of northeast
Mississippi.

.DAY ONE...Tonight through Sunday night

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Mainly Sunday

FLOODING
THREAT...Elevated
TIMING...Sunday

Isolated severe thunderstorms capable of producing quarter size
hail will be possible late tonight into Sunday morning. Severe
thunderstorms will become likely by Sunday afternoon with
damaging winds up to 70 mph, large hail up to golf ball size and
tornadoes.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.png)

With 3 to 5 inches of rainfall expected, areas of flash flooding
are likely with some roads being flooded or closed. Some
structures may be potentially threatened by high water. River
flooding is also possible.

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

.DAYS TWO THROUGH SEVEN...Monday through Friday

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 Sunday
through Sunday night.

MSZ030-192115-
Clay-
406 PM CDT Sat Apr 18 2020

This hazardous weather outlook is for portions of northeast
Mississippi.

.DAY ONE...Tonight through Sunday night

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Mainly Sunday

FLOODING
THREAT...Elevated
TIMING...Sunday

Isolated severe thunderstorms capable of producing quarter size
hail will be possible late tonight into Sunday morning. Severe
thunderstorms are possible by Sunday afternoon with damaging
winds to 60 mph, hail at least to the size of quarters and
tornadoes.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.png)

With 3 to 5 inches of rainfall expected, areas of flash flooding
are likely with some roads being flooded or closed. Some
structures may be potentially threatened by high water. River
flooding is also possible.

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

.DAYS TWO THROUGH SEVEN...Monday through Friday

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 Sunday
through Sunday night.

LAZ009-016-025-MSZ036>038-040>059-065-066-192115-
East Carroll-Madison LA-Tensas-Holmes-Attala-Winston-Issaquena-
Sharkey-Yazoo-Madison MS-Leake-Neshoba-Kemper-Warren-Hinds-Rankin-
Scott-Newton-Lauderdale-Claiborne-Copiah-Simpson-Smith-Jasper-
Clarke-Jefferson-Covington-Jones-
406 PM CDT Sat Apr 18 2020

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

.DAY ONE...Tonight through Sunday night

SEVERE THUNDERSTORMS
THREAT...Moderate
TIMING...Mainly Sunday

FLOODING
THREAT...Elevated
TIMING...Sunday

Isolated severe thunderstorms capable of producing quarter size
hail and damaging wind gusts will be possible late tonight into
Sunday morning. Significant severe thunderstorms and tornadoes are
likely with strong tornadoes possible by Sunday afternoon. Some
thunderstorms could also produce damaging winds up to 70 mph and
large hail up to at least golf ball size.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.png)

With 3 to 5 inches of rainfall expected, areas of flash flooding
are likely with some roads being flooded or closed. Some
structures may be potentially threatened by high water. River
flooding is also possible.

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

.DAYS TWO THROUGH SEVEN...Monday through Friday

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 Sunday night.

LAZ008-015-023-024-026-MSZ060>064-072>074-192115-
West Carroll-Richland-Franklin LA-Catahoula-Concordia-Adams-
Franklin MS-Lincoln-Lawrence-Jefferson Davis-Marion-Lamar-Forrest-
406 PM CDT Sat Apr 18 2020

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

.DAY ONE...Tonight and Sunday

SEVERE THUNDERSTORMS
THREAT...Moderate
TIMING...Mainly Sunday

FLOODING
THREAT...Limited
TIMING...Sunday

Isolated severe thunderstorms capable of producing quarter size
hail and damaging wind gusts will be possible late tonight into
Sunday morning. Significant severe thunderstorms and tornadoes are
likely with strong tornadoes possible by Sunday afternoon. Some
thunderstorms could also produce damaging winds up to 70 mph and
large hail up to at least golf ball size.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.png)

With 1 to 3 inches of rainfall possible, 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/3.png)

.DAYS TWO THROUGH SEVEN...Monday through Friday

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 Sunday night.

MSZ039-192115-
Noxubee-
406 PM CDT Sat Apr 18 2020

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

.DAY ONE...Tonight through Sunday night

SEVERE THUNDERSTORMS
THREAT...Moderate
TIMING...Mainly Sunday

FLOODING
THREAT...Elevated
TIMING...Sunday

Isolated severe thunderstorms capable of producing quarter size
hail and damaging wind gusts will be possible late tonight into
Sunday morning. Significant severe thunderstorms and tornadoes are
likely with strong tornadoes possible by Sunday afternoon. Some
thunderstorms could also produce damaging winds up to 70 mph and
large hail up to at least golf ball size.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.png)

With 3 to 5 inches of rainfall expected, areas of flash flooding
are likely with some roads being flooded or closed. Some
structures may be potentially threatened by high water. River
flooding is also possible.

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

.DAYS TWO THROUGH SEVEN...Monday through Friday

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 Sunday
through Sunday night.

26

&&

...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 18, 9:44 PM CDT, 1 hour 37 minutes before
Special Weather Statement
National Weather Service Jackson MS
944 PM CDT Sat Apr 18 2020

MSZ062-190315-
Lincoln MS-
944 PM CDT Sat Apr 18 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN LINCOLN COUNTY
UNTIL 1015 PM CDT...

At 942 PM CDT, Meteorologists were tracking a strong thunderstorm
over Bogue Chitto, or 11 miles south of Brookhaven, moving northeast
at 40 mph.

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

This strong thunderstorm will be near...
  Bogue Chitto around 945 PM CDT.
  Enterprise and Ruth around 955 PM CDT.
  East Lincoln around 1000 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.

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.

&&

LAT...LON 3145 9063 3147 9063 3168 9029 3160 9024
      3136 9025 3135 9034 3135 9057
TIME...MOT...LOC 0242Z 247DEG 33KT 3142 9050

NF
Special weather statement, Apr 18, 9:44 PM CDT, 1 hour 37 minutes before
Special Weather Statement
National Weather Service Jackson MS
944 PM CDT Sat Apr 18 2020

MSZ072-073-190315-
Lamar MS-Marion MS-
944 PM CDT Sat Apr 18 2020

...STRONG THUNDERSTORMS WILL AFFECT MARION AND SOUTHWESTERN LAMAR
COUNTIES UNTIL 1015 PM CDT...

At 944 PM CDT, Meteorologists were tracking strong thunderstorms
along a line extending from near Kokomo to near Varnado. Movement was
northeast at 45 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
these storms.

Strong thunderstorms will be near...
  Columbia and Goss around 955 PM CDT.
  Baxterville around 1000 PM CDT.
  Bunker Hill around 1005 PM CDT.
  Lumberton and Improve around 1010 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.

These storms 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.

&&

LAT...LON 3101 8950 3101 8955 3100 8955 3100 8983
      3107 8984 3108 8991 3113 8994 3113 8995
      3125 9004 3130 9004 3139 8987 3139 8982
      3141 8983 3144 8979 3143 8965 3101 8942
      3098 8943 3098 8947
TIME...MOT...LOC 0244Z 247DEG 39KT 3125 8999 3094 8976

NF
Special weather statement, Apr 18, 10:25 PM CDT, 56 minutes before
Special Weather Statement
National Weather Service Jackson MS
1025 PM CDT Sat Apr 18 2020

MSZ055-063-064-190400-
Lawrence MS-Jefferson Davis MS-Simpson MS-
1025 PM CDT Sat Apr 18 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL SIMPSON...NORTHERN
LAWRENCE AND NORTHWESTERN JEFFERSON DAVIS COUNTIES UNTIL 1100 PM
CDT...

At 1025 PM CDT, Meteorologists were tracking a strong thunderstorm
over Monticello, or 19 miles east of Brookhaven, moving northeast at
35 mph.

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

This strong thunderstorm will be near...
  Prentiss around 1050 PM CDT.

Other locations impacted by this storm include New Hebron and Silver
Creek.

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.

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.

&&

LAT...LON 3150 9014 3163 9023 3184 9000 3157 8977
TIME...MOT...LOC 0325Z 239DEG 30KT 3159 9012

NF
Special weather statement, Apr 18, 10:26 PM CDT, 55 minutes before
Special Weather Statement
National Weather Service Jackson MS
1026 PM CDT Sat Apr 18 2020

MSZ054-061-062-190400-
Copiah MS-Lincoln MS-Franklin MS-
1026 PM CDT Sat Apr 18 2020

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL LINCOLN...NORTHEASTERN
FRANKLIN AND SOUTH CENTRAL COPIAH COUNTIES UNTIL 1100 PM CDT...

At 1026 PM CDT, Meteorologists were tracking a strong thunderstorm
near Mccall Creek, or 12 miles west of Brookhaven, moving northeast
at 45 mph.

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

This strong thunderstorm will be near...
  West Lincoln around 1030 PM CDT.
  Vaughn and Loyd Star around 1035 PM CDT.
  Brookhaven around 1045 PM CDT.
  Wesson around 1050 PM CDT.

Other locations impacted by this storm include Beauregard.

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.

&&

LAT...LON 3143 9068 3157 9077 3178 9036 3155 9024
      3153 9024
TIME...MOT...LOC 0326Z 246DEG 39KT 3153 9065

NF
Special weather statement, Apr 18, 10:51 PM CDT, 30 minutes before
Special Weather Statement
National Weather Service Jackson MS
1051 PM CDT Sat Apr 18 2020

MSZ064-065-190415-
Jefferson Davis MS-Covington MS-
1051 PM CDT Sat Apr 18 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN COVINGTON AND NORTH
CENTRAL JEFFERSON DAVIS COUNTIES UNTIL 1115 PM CDT...

At 1051 PM CDT, Meteorologists were tracking a strong thunderstorm
near Clem, or 14 miles south of Magee, moving east at 40 mph.

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

This strong thunderstorm will be near...
  Clem and Lone Star around 1055 PM CDT.
  Mount Olive around 1110 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.

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.

&&

LAT...LON 3173 8992 3177 8985 3179 8957 3164 8950
      3159 8980
TIME...MOT...LOC 0351Z 247DEG 35KT 3167 8982

NF
Special weather statement, Apr 18, 11:21 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Jackson MS
1121 PM CDT Sat Apr 18 2020

MSZ055-190445-
Simpson MS-
1121 PM CDT Sat Apr 18 2020

...A STRONG THUNDERSTORM WILL AFFECT SIMPSON COUNTY UNTIL 1145 PM
CDT...

At 1121 PM CDT, Meteorologists were tracking a strong thunderstorm
near Shivers, or near Pinola, moving northeast at 45 mph.

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

This strong thunderstorm will be near...
  Pinola around 1130 PM CDT.
  Mendenhall around 1140 PM CDT.
  Magee, Martinville and Sanatorium around 1145 PM CDT.

Other locations impacted by this storm include D'Lo and Braxton.

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.

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.

&&

LAT...LON 3177 9013 3177 9011 3179 9011 3179 9014
      3180 9015 3183 9014 3183 9013 3184 9016
      3186 9013 3189 9014 3205 8994 3205 8980
      3181 8965 3179 8965 3177 8975 3175 9012
TIME...MOT...LOC 0421Z 244DEG 38KT 3183 9004

NF

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 9:17 PM CDTRiver Flood WarningJANClay5 days
Apr 18, 9:22 PM CDTSpecial Weather StatementJANMarion23 min
Apr 18, 9:44 PM CDTSpecial Weather StatementJANLincoln31 min
Apr 18, 10:25 PM CDTSpecial Weather StatementJANJefferson Davis, Lawrence35 min
Apr 18, 10:26 PM CDTSpecial Weather StatementJANLincoln34 min
Apr 18, 10:51 PM CDTSpecial Weather StatementJANCovington24 min
Apr 18, 11:28 PM CDTSevere Thunderstorm WarningJANSimpson, Smith47 min
Apr 19, 12:04 AM CDTSevere Thunderstorm WarningJANJasper, Newton, Smith41 min
Apr 19, 12:43 AM CDTSpecial Weather StatementJANNewton32 min
Apr 19, 1:17 AM CDTSpecial Weather StatementJANIssaquena28 min
Apr 19, 1:22 AM CDTSevere Thunderstorm WarningJANIssaquena, Sharkey, Yazoo38 min
Apr 19, 1:48 AM CDTSpecial Weather StatementJANNeshoba27 min
Apr 19, 1:58 AM CDTSevere Thunderstorm WarningJANYazoo47 min
Apr 19, 2:13 AM CDTSpecial Weather StatementJANBolivar32 min
Apr 19, 2:27 AM CDTSpecial Weather StatementJANNoxubee33 min
Apr 19, 2:36 AM CDTSevere Thunderstorm WarningJANAttala, Leake, Madison39 min
Apr 19, 3:02 AM CDTSevere Thunderstorm WarningJANAttala, Leake, Neshoba, Winston58 min
Apr 19, 3:37 AM CDTSpecial Weather StatementJANSunflower38 min
Apr 19, 3:50 AM CDTSpecial Weather StatementJANNoxubee25 min
Apr 19, 4:23 AM CDTSpecial Weather StatementJANGrenada52 min
Apr 19, 5:23 AM CDTSpecial Weather StatementJANClay, Webster52 min
Apr 19, 6:22 AM CDTSpecial Weather StatementJANLowndes53 min
Apr 19, 9:44 AM CDTRiver Flood WarningJANCarroll, Leflore7 days
Apr 19, 10:13 AM CDTSpecial Weather StatementJANLowndes47 min
Apr 19, 11:03 AM CDTSpecial Weather StatementJANClay27 min
Apr 19, 11:22 AM CDTSpecial Weather StatementJANJefferson38 min
Apr 19, 12:53 PM CDTSevere Thunderstorm WarningJANCopiah, Hinds, Rankin43 min
Apr 19, 1:00 PM CDTSpecial Weather StatementJANIssaquena, Sharkey, Yazoo45 min
Apr 19, 1:25 PM CDTSpecial Weather StatementJANRankin65 min
Apr 19, 1:33 PM CDTSpecial Weather StatementJANHolmes, Humphreys42 min
Apr 19, 2:00 PM CDTSevere Thunderstorm WarningJANNewton, Scott, Smith60 min
Apr 19, 2:08 PM CDTSevere Thunderstorm WarningJANIssaquena, Warren, Yazoo67 min
Apr 19, 2:26 PM CDTSpecial Weather StatementJANCovington34 min
Apr 19, 2:30 PM CDTSevere Thunderstorm WarningJANClaiborne, Warren45 min
Apr 19, 2:34 PM CDTSpecial Weather StatementJANJones26 min
Apr 19, 2:41 PM CDTSevere Thunderstorm WarningJANJasper, Simpson, Smith49 min
Apr 19, 2:46 PM CDTSevere Thunderstorm WarningJANHinds, Madison59 min
Apr 19, 3:01 PM CDTFlash Flood WarningJANLowndes, Noxubee, Winston3 hr
Apr 19, 3:04 PM CDTSpecial Weather StatementJANClarke, Jasper26 min
Apr 19, 3:09 PM CDTFlash Flood WarningJANWarren4 hr
Apr 19, 3:11 PM CDTSevere Thunderstorm WarningJANClaiborne, Copiah, Hinds43 min
Apr 19, 3:26 PM CDTSevere Thunderstorm WarningJANMadison, Rankin, Scott49 min
Apr 19, 3:28 PM CDTSpecial Weather StatementJANClarke32 min
Apr 19, 3:33 PM CDTSpecial Weather StatementJANLauderdale27 min
Apr 19, 3:36 PM CDTSevere Thunderstorm WarningJANClarke39 min
Apr 19, 3:45 PM CDTSpecial Weather StatementJANSimpson45 min
Apr 19, 4:00 PM CDTSevere Thunderstorm WarningJANJasper, Rankin, Simpson, Smith60 min
Apr 19, 4:00 PM CDTTornado WarningJANClarke30 min
Apr 19, 4:17 PM CDTSpecial Weather StatementJANNewton, Scott43 min
Apr 19, 4:39 PM CDTSevere Thunderstorm WarningJANClarke, Jasper, Lauderdale, Newton66 min
Apr 19, 5:44 PM CDTSevere Thunderstorm WarningJANFranklin46 min
Apr 19, 5:46 PM CDTSpecial Weather StatementJANJefferson29 min
Apr 19, 6:06 PM CDTSpecial Weather StatementJANFranklin24 min
Apr 19, 6:13 PM CDTSpecial Weather StatementJANClaiborne32 min
Apr 19, 6:19 PM CDTSevere Thunderstorm WarningJANFranklin, Lincoln41 min
Apr 19, 6:55 PM CDTTornado WarningJANLamar, Marion65 min
Apr 18, 11:53 PM CDTSpecial Weather StatementJANMorehouse37 min
Apr 19, 12:22 AM CDTSpecial Weather StatementJANWest Carroll23 min
Apr 19, 12:45 AM CDTSpecial Weather StatementJANEast Carroll, West Carroll30 min
Apr 19, 12:02 PM CDTSpecial Weather StatementJANFranklin, Richland58 min
Apr 19, 12:13 PM CDTSpecial Weather StatementJANWest Carroll47 min
Apr 19, 12:36 PM CDTSpecial Weather StatementJANMorehouse54 min
Apr 19, 1:48 PM CDTSpecial Weather StatementJANMadison42 min
Apr 19, 1:52 PM CDTSevere Thunderstorm WarningJANFranklin, Richland68 min
Apr 19, 4:42 PM CDTSpecial Weather StatementJANFranklin33 min
Apr 19, 5:27 PM CDTSevere Thunderstorm WarningJANCatahoula, Concordia, Franklin, Tensas63 min

Nearby

Special Weather Statements in Mississippi, 2020Every special weather statement in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.