Alert archive / Mississippi / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 178, NWS Jackson, MS

April 22, 20204 counties in Mississippi; Concordia Parish, Tensas Parish, Louisiana

NWS Jackson, MS issued this severe thunderstorm warning at Apr 22, 2020, 8:10 PM CDT for 4 counties in Mississippi; Concordia Parish, Tensas Parish, Louisiana. It was in force for 65 min. 5 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 22, 2020, 8:10 PM CDT (01:10 UTC)
Expired: Apr 22, 2020, 9:15 PM CDT
In force: 65 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Concordia Parish, LA, Tensas Parish, LA, Adams County, MS, Claiborne County, MS, Jefferson County, MS, Warren County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 124 km from the middle of the area, began a volume at 01:09 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

Time	Report	Where	Remark
Apr 22, 8:33 PM CDT	TSTM WND DMG	5 N Pine Ridge, MS	TREES DOWNED ALONG MARTIN LUTHER KING RD NEAR ANNAS BOTTOM RD.
Apr 22, 8:45 PM CDT	TSTM WND DMG	Lorman, MS	MULTIPLE TREES DOWNED IN JEFFERSON COUNTY.
Apr 22, 8:45 PM CDT	TSTM WND DMG	Port Gibson, MS	POWER LINES DOWN ON HWY 18. TWO HOMES SUSTAINED DAMAGE FROM STORMS IN AND NEAR PORT GIBSON. TIME ESTIMATED.
Apr 22, 8:45 PM CDT	HAIL 1.5	Lorman, MS	PING PONG BALL SIZE HAIL REPORT WAS POSTED TO A LOCAL MEDIA FACEBOOK PAGE.
Apr 22, 9:15 PM CDT	TSTM WND DMG	1 Se Pattison, MS	TREES DOWN.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 5 storm reports to this severe thunderstorm warning; the first came 23 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 1.2 hours before the alert went out and 237 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 8 J/kg
Mixed-layer CIN: -206 J/kg
Mixed-layer LCL: 885 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 337 m²/s²
0-3 km storm-relative helicity: 666 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

178 
WUUS54 KJAN 230110
SVRJAN
LAC029-107-MSC001-021-063-149-230215-
/O.NEW.KJAN.SV.W.0178.200423T0110Z-200423T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
810 PM CDT Wed Apr 22 2020

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Tensas Parish in northeastern Louisiana...
  Northeastern Concordia Parish in northeastern Louisiana...
  Southwestern Warren County in west central Mississippi...
  Claiborne County in southwestern Mississippi...
  Jefferson County in southwestern Mississippi...
  Northeastern Adams County in southwestern Mississippi...

* Until 915 PM CDT.

* At 810 PM CDT, severe thunderstorms were located along a line
  extending from near Newlight to Lee Bayou, moving east at 50 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Waterproof and Helena around 820 PM CDT.
  Newellton around 825 PM CDT.
  Church Hill around 830 PM CDT.
  Fayette, Yokena, Lorman and Mcnair around 845 PM CDT.
  Red Lick around 850 PM CDT.
  Rocky Springs around 855 PM CDT.
  Blue Hill and Reganton around 900 PM CDT.
  Mcbride, Union Church and Peyton around 905 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3174 9158 3172 9155 3173 9154 3178 9157
      3215 9145 3217 9106 3212 9105 3212 9103
      3216 9100 3217 9104 3218 9095 3219 9073
      3161 9074 3161 9115 3164 9164
TIME...MOT...LOC 0110Z 270DEG 42KT 3214 9142 3176 9153 

HAIL...1.00IN
WIND...60MPH
 
$$

DL

5 follow-up statements

693 
WWUS54 KJAN 230123
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
823 PM CDT Wed Apr 22 2020

MSC149-230133-
/O.CAN.KJAN.SV.W.0178.000000T0000Z-200423T0215Z/
Warren MS-
823 PM CDT Wed Apr 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WARREN COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3174 9152 3202 9138 3208 9073 3161 9074
      3161 9115 3163 9151
TIME...MOT...LOC 0123Z 279DEG 39KT 3199 9131 3174 9143 

$$

LAC029-107-MSC001-021-063-230215-
/O.CON.KJAN.SV.W.0178.000000T0000Z-200423T0215Z/
Tensas LA-Concordia LA-Claiborne MS-Jefferson MS-Adams MS-
823 PM CDT Wed Apr 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHERN TENSAS AND NORTHEASTERN CONCORDIA PARISHES...
CLAIBORNE...JEFFERSON AND NORTHEASTERN ADAMS COUNTIES...

At 823 PM CDT, severe thunderstorms were located along a line
extending from near Lake Bruin to near Spokane, moving east at 45
mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

These severe storms will be near...
  St. Joseph and Lake Bruin around 830 PM CDT.
  Alcorn, Church Hill and Stanton around 840 PM CDT.
  Fayette, Port Gibson and Stampley around 850 PM CDT.
  Mcnair and Pattison around 855 PM CDT.
  Hermanville and Peyton around 900 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3174 9152 3202 9138 3208 9073 3161 9074
      3161 9115 3163 9151
TIME...MOT...LOC 0123Z 279DEG 39KT 3199 9131 3174 9143 

HAIL...0.75IN
WIND...60MPH
 
$$

DL

147 
WWUS54 KJAN 230138
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
838 PM CDT Wed Apr 22 2020

LAC029-107-MSC001-230148-
/O.CAN.KJAN.SV.W.0178.000000T0000Z-200423T0215Z/
Tensas LA-Concordia LA-Adams MS-
838 PM CDT Wed Apr 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN TENSAS...NORTHEASTERN
CONCORDIA PARISHES IN NORTHEASTERN LOUISIANA AND NORTHEASTERN ADAMS
COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3167 9115 3172 9128 3175 9127 3176 9126
      3177 9126 3185 9124 3191 9120 3192 9118
      3194 9119 3198 9116 3199 9110 3201 9108
      3204 9108 3208 9073 3161 9074
TIME...MOT...LOC 0138Z 270DEG 46KT 3199 9110 3173 9117 

$$

MSC021-063-230215-
/O.CON.KJAN.SV.W.0178.000000T0000Z-200423T0215Z/
Claiborne MS-Jefferson MS-
838 PM CDT Wed Apr 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR CLAIBORNE AND JEFFERSON COUNTIES...

At 838 PM CDT, severe thunderstorms were located along a line
extending from 7 miles west of Port Gibson to near Church Hill,
moving east at 50 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

These severe storms will be near...
  Port Gibson around 845 PM CDT.
  Red Lick around 850 PM CDT.
  Hermanville and Pattison around 855 PM CDT.
  Blue Hill around 900 PM CDT.
  Pleasant Hill, Mcbride, Union Church and Peyton around 905 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3167 9115 3172 9128 3175 9127 3176 9126
      3177 9126 3185 9124 3191 9120 3192 9118
      3194 9119 3198 9116 3199 9110 3201 9108
      3204 9108 3208 9073 3161 9074
TIME...MOT...LOC 0138Z 270DEG 46KT 3199 9110 3173 9117 

HAIL...1.00IN
WIND...60MPH
 
$$

DL

946 
WWUS54 KJAN 230143
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
843 PM CDT Wed Apr 22 2020

MSC021-063-230215-
/O.CON.KJAN.SV.W.0178.000000T0000Z-200423T0215Z/
Claiborne MS-Jefferson MS-
843 PM CDT Wed Apr 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR CLAIBORNE AND JEFFERSON COUNTIES...

At 843 PM CDT, severe thunderstorms were located along a line
extending from near Port Gibson to near Fayette, moving east at 50
mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

These severe storms will be near...
  Port Gibson around 850 PM CDT.
  Red Lick and Pattison around 855 PM CDT.
  Hermanville around 900 PM CDT.
  Blue Hill around 905 PM CDT.
  Mcbride, Union Church and Peyton around 910 PM CDT.
  Pleasant Hill around 915 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3167 9115 3171 9123 3195 9113 3199 9110
      3201 9108 3204 9108 3208 9073 3161 9074
TIME...MOT...LOC 0143Z 270DEG 42KT 3199 9107 3173 9114 

HAIL...1.25IN
WIND...60MPH
 
$$

DL

584 
WWUS54 KJAN 230149
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
849 PM CDT Wed Apr 22 2020

MSC021-063-230215-
/O.CON.KJAN.SV.W.0178.000000T0000Z-200423T0215Z/
Claiborne MS-Jefferson MS-
849 PM CDT Wed Apr 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHEASTERN CLAIBORNE AND NORTHEASTERN JEFFERSON COUNTIES...

At 849 PM CDT, a severe thunderstorm was located over Lorman, or 29
miles northeast of Natchez, moving east at 50 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe storm will be near...
  Blue Hill and Pattison around 900 PM CDT.
  Peyton and Mcbride around 905 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3174 9116 3195 9109 3202 9073 3177 9074
      3164 9074
TIME...MOT...LOC 0149Z 270DEG 42KT 3182 9101 

HAIL...1.50IN
WIND...60MPH
 
$$

DL

839 
WWUS54 KJAN 230159
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
859 PM CDT Wed Apr 22 2020

MSC021-063-230215-
/O.CON.KJAN.SV.W.0178.000000T0000Z-200423T0215Z/
Claiborne MS-Jefferson MS-
859 PM CDT Wed Apr 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHEASTERN CLAIBORNE AND NORTHEASTERN JEFFERSON COUNTIES...

At 859 PM CDT, a severe thunderstorm was located near Blue Hill, or
28 miles west of Hazlehurst, moving east at 50 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe storm will be near...
  Mcbride around 905 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3177 9099 3196 9096 3202 9073 3177 9074
      3170 9074
TIME...MOT...LOC 0159Z 270DEG 42KT 3182 9087 

HAIL...1.75IN
WIND...60MPH
 
$$

DL

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Apr 22, 7:32 PM CDT, 38 minutes earlier.

Area forecast discussion, Apr 22, 7:32 PM CDT, 38 minutes before

Area Forecast Discussion
National Weather Service Jackson MS
732 PM CDT Wed Apr 22 2020

.UPDATE...
Updated for 00Z aviation discussion

&&

.AVIATION...
00Z TAF discussion:
Showers and thunderstorms continue across much of Central MS this
evening. Short break in HBG/PIB for now, with further convection
back to the west. Lowering ceilings and gusty winds out of the
south/southeast continue as a surface low deepens over AR tonight.
Much of the forecast will be dominated by intermittent showers and
thunderstorms through the night. Eventual clearing from west to
east later tomorrow morning, and winds coming around to more
westerly behind the cold front by midday.

&&

.DISCUSSION...
Through Thursday...

Severe weather is still expected this evening into the overnight
hours. Rain and embedded thunderstorms continue to overspread
across the region this evening. This comes as a shortwave trough
swings across the region and a deepening surface low that tracks
from Oklahoma to ARK/MO. As this occurs, the warm front that is
located across the southwest part of the forecast area will lift
north. This will bring moisture into the forecast area through the
evening into tonight. Initially, some of these storms will be
elevated in advance of the warm front with hail being the main
concern. As the evening progresses, all hazards will be possible
as a combination of discrete cells and a QLCS should move into the
western portions of the CWA later tonight. Strong shear,
sufficient instability will be in place across the area as well as
300 to 500 m2/s2 helicity. This will promote tornado potential
including the possibility for a strong tornado to occur. After
around midnight or so, more of a QLCS should develop and move east
through daybreak. We did locally expand the enhanced risk for
storms across some portion of the central part of the CWA but the
further south you go, there is some capping that may limit
storms/intensity though severe weather remains possible there.

On top of severe potential, there remains a decent flooding risk.
As grounds are saturated from recent rainfall, PW values increase
to around 1.7-2 inches and several rounds of storms could move
over the same location, the flash flood watch has been expanded
across the area. Two to four inches of rain are possible in these
locations with locally higher amounts possible.

As if that wasn't enough, there remains some potential for a wake
low to develop within the stratiform rain area behind the area of
storms. This will bring gusty winds sustained 20-25 mph and gusts
to near 40 mph.

The front will move through the region on Thursday. Some hi-res
models indicate that there could be additional redevelopment in
the afternoon as this occurs. Al storm activity should be out of
the forecast area by late tomorrow afternoon. /28/

Friday through Next Week...

Friday will begin with some pretty good weather with temperatures
climbing into the lower 80s across the entire region. By Friday
evening, southerly flow will begin to increase as a disturbance
associated with a shortwave trough tracks its way across the MS
Valley. Different global models agree in regards to timing(though we
are a couple days away and timing could change)bringing in
showers/storms by late Friday night into early Saturday morning.
However, a shower or 2 can't be ruled out early Friday evening. Even
though the atmosphere doesn't support a very moist airmass Friday,
the mesoscale dynamics are there. With an approaching cold front,
possible 30-40kts of midlevel shear, dewpoints in the 60s, combined
with instability(MUCAPE 800-1500J/kg), storms have the potential to
become strong to severe especially east of I-55. A 'Marginal' risk
will be displayed in the HWO. The main risk will be damaging winds
and hail.

By Saturday early morning, showers and a possible storm will
continue to linger but by late morning, going into the afternoon
hours, everything should be east of the ArkLaMiss. The rest of the
weekend will be dry and quiet conditions will prevail through the
beginning half of the next working week. High temperatures will
range from the mid to upper 70s Saturday and Sunday and start to
warm into the 80s next week./JNE/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       65  80  57  83 /  99  33   1   0
Meridian      64  82  56  83 /  93  75   4   0
Vicksburg     66  79  57  83 /  84  14   0   1
Hattiesburg   66  82  57  85 /  80  64   5   0
Natchez       66  80  57  83 /  81  18   0   0
Greenville    63  74  57  78 /  97  16   1   6
Greenwood     62  75  55  79 /  99  45   2   3

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Flash Flood Watch through Thursday morning for MSZ018-019-
     025>059.

LA...Flash Flood Watch through Thursday morning for LAZ007>009-015-
     016-023>025.

AR...Flash Flood Watch through Thursday morning for ARZ074-075.

&&

HJS

Hazardous weather outlook, Apr 22, 5:31 PM CDT, 2 hours 39 minutes before

Hazardous Weather Outlook
National Weather Service Jackson MS
531 PM CDT Wed Apr 22 2020

ARZ074-075-LAZ007>009-015-016-023>025-MSZ034-035-040>043-047>059-
232245-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-Tensas-Washington-Humphreys-
Issaquena-Sharkey-Yazoo-Madison MS-Warren-Hinds-Rankin-Scott-
Newton-Lauderdale-Claiborne-Copiah-Simpson-Smith-Jasper-Clarke-
Jefferson-
531 PM CDT Wed Apr 22 2020

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

.DAY ONE...Tonight and Thursday

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Tonight through Thursday

FLOODING
THREAT...Elevated
TIMING...Tonight

NON-THUNDERSTORM WINDS
THREAT...Limited
TIMING...Tonight

Severe thunderstorms are likely and tornadoes are possible
tonight. Some tornadoes could be strong. Some thunderstorms may
produce damaging winds up to 70 mph and large hail up to golf ball
size.

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

Tonight, 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)

Tonight, weak trees and limbs may break and fall due to sustained
winds up to 25 mph and wind gusts around 35 mph. High profile
vehicles could also be affected.

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

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

Isolated severe thunderstorms are possible for extreme
southeast Arkansas, portions of northeast Mississippi,
portions of northeast Louisiana, portions of central
Mississippi, portions of west central Mississippi, northwest
Mississippi, and north central Mississippi on Friday night.

(https://www.weather.gov/images/jan/graphicast/5.png)

.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 Friday
night and tonight through Thursday.

MSZ018-019-025>033-036>039-044>046-232245-
Bolivar-Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay-
Lowndes-Choctaw-Oktibbeha-Holmes-Attala-Winston-Noxubee-Leake-
Neshoba-Kemper-
531 PM CDT Wed Apr 22 2020

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

.DAY ONE...Tonight and Thursday

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

FLOODING
THREAT...Elevated
TIMING...Tonight

NON-THUNDERSTORM WINDS
THREAT...Limited
TIMING...Tonight

Severe thunderstorms and tornadoes are possible tonight into
tomorrow. Some thunderstorms could produce damaging winds to 60
mph and hail at least to the size of quarters.

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

Tonight, 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)

Tonight, weak trees and limbs may break and fall due to sustained
winds up to 25 mph and wind gusts around 35 mph. High profile
vehicles could also be affected.

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

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

Isolated severe thunderstorms are possible for extreme
southeast Arkansas, portions of northeast Mississippi,
portions of northeast Louisiana, portions of central
Mississippi, portions of west central Mississippi, northwest
Mississippi, and north central Mississippi on Friday night.

(https://www.weather.gov/images/jan/graphicast/5.png)

.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 Friday
night and tonight through Thursday.

LAZ026-MSZ060>066-232245-
Concordia-Adams-Franklin MS-Lincoln-Lawrence-Jefferson Davis-
Covington-Jones-
531 PM CDT Wed Apr 22 2020

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

.DAY ONE...Tonight and Thursday

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Tonight through Thursday

FLOODING
THREAT...Limited
TIMING...Tonight

NON-THUNDERSTORM WINDS
THREAT...Limited
TIMING...Tonight

Severe thunderstorms are likely and tornadoes are possible
tonight. Some tornadoes could be strong. Some thunderstorms may
produce damaging winds up to 70 mph and large hail up to golf ball
size.

(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)

Tonight, weak trees and limbs may break and fall due to sustained
winds up to 25 mph and wind gusts around 35 mph. High profile
vehicles could also be affected.

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

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

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 Thursday.

MSZ072>074-232245-
Marion-Lamar-Forrest-
531 PM CDT Wed Apr 22 2020

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

.DAY ONE...Tonight and Thursday

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

FLOODING
THREAT...Limited
TIMING...Tonight

NON-THUNDERSTORM WINDS
THREAT...Limited
TIMING...Tonight

Severe thunderstorms and tornadoes are possible tonight into
tomorrow. Some thunderstorms could produce damaging winds to 60
mph and hail at least to the size of quarters.

(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)

Tonight, weak trees and limbs may break and fall due to sustained
winds up to 25 mph and wind gusts around 35 mph. High profile
vehicles could also be affected.

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

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

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 Thursday.

28

&&

...HAZARD LEGEND...

*SEVERE THUNDERSTORMS*
High...Significant severe thunderstorms are expected.
Moderate...Severe storms expected with significant
 severe weather possible.
Enhanced...Severe storms expected.
Slight...Severe storms possible.
Marginal...Isolated severe storms possible.

*FLOODING*
Extreme...Confident in significant flooding.
Significant...Significant flooding possible.
Elevated...Confident in flooding.
Limited...Flooding possible.

*NON-THUNDERSTORM WINDS*
Extreme...Sustained winds 50 mph or greater or wind gusts 65 mph
 or greater.
Significant...Sustained winds 40-49 mph or wind gusts 58-64 mph.
Elevated...Sustained winds 30-39 mph or wind gusts 45-57 mph.
Limited...Sustained winds 20-29 mph or wind gusts 30 to 44 mph.

...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 22, 6:12 PM CDT, 1 hour 58 minutes before

Special Weather Statement
National Weather Service Jackson MS
612 PM CDT Wed Apr 22 2020

LAZ024-026-230015-
Concordia LA-Catahoula LA-
612 PM CDT Wed Apr 22 2020

...STRONG THUNDERSTORMS WILL AFFECT CONCORDIA AND CATAHOULA PARISHES
THROUGH 715 PM CDT...

At 610 PM CDT, Meteorologists were tracking a cluster of
thunderstorms producing frequent lightning and very heavy rain over
Mayna, or near Larto, moving east at 35 mph.

Torrential rainfall is occurring with these storms, and may lead to
localized flooding.

Locations impacted include...
Natchez, Vidalia, Ferriday, Larto, Monterey, Jonesville, Clayton,
Acme, New Era, Wildsville, Slocum, Spokane, Archie, Mayna, West
Ferriday, Deer Park, Walters, Frogmore and Ridgecrest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive your vehicle through flooded roadways.

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.

&&

LAT...LON 3163 9201 3176 9155 3175 9138 3162 9140
      3165 9150 3162 9152 3159 9149 3159 9140
      3152 9152 3137 9147 3136 9148 3143 9154
      3141 9158 3129 9151 3123 9180 3130 9193
      3123 9192 3123 9200
TIME...MOT...LOC 2310Z 252DEG 29KT 3141 9187

DL

Local storm report, Apr 22, 7:34 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
734 PM CDT WED APR 22 2020

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

0634 PM     TSTM WND DMG     DEER PARK               31.41N 91.58W
04/22/2020                   CONCORDIA          LA   LAW ENFORCEMENT

            A COUPLE OF TREES WERE BLOWN DOWN, INCLUDING
            1 ON HIGHWAY 15 NEAR DEER PARK.

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 8:58 PM CDT	Wind Advisory	JAN	Bolivar, Carroll, Grenada, Holmes, Humphreys, Leflore and 3 more	8 hr
Apr 22, 9:02 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Simpson	42 min
Apr 22, 9:22 PM CDT	Special Weather Statement	JAN	Jefferson	38 min
Apr 22, 9:30 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Jefferson	45 min
Apr 22, 9:53 PM CDT	Tornado Warning Tornado observed	JAN	Adams	67 min
Apr 22, 9:58 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Jefferson, Lincoln	47 min
Apr 22, 10:21 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Lawrence, Simpson	54 min
Apr 22, 10:29 PM CDT	Tornado Warning Tornado observed	JAN	Adams, Franklin	32 min
Apr 22, 10:56 PM CDT	Special Weather Statement	JAN	Washington	34 min
Apr 22, 11:06 PM CDT	Special Weather Statement	JAN	Covington	24 min
Apr 22, 11:09 PM CDT	Special Weather Statement	JAN	Jefferson	51 min
Apr 22, 11:12 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jones	51 min
Apr 22, 11:23 PM CDT	Severe Thunderstorm Warning	JAN	Sunflower, Washington	37 min
Apr 22, 11:38 PM CDT	Special Weather Statement	JAN	Jasper	52 min
Apr 22, 11:49 PM CDT	Severe Thunderstorm Warning	JAN	Grenada, Leflore	22 min
Apr 23, 12:33 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne	42 min
Apr 23, 12:34 AM CDT	Special Weather Statement	JAN	Rankin	41 min
Apr 23, 12:35 AM CDT	Severe Thunderstorm Warning	JAN	Hinds, Warren	55 min
Apr 23, 12:38 AM CDT	Flash Flood Warning	JAN	Warren	3 hr
Apr 23, 12:43 AM CDT	Severe Thunderstorm Warning	JAN	Rankin, Simpson, Smith	51 min
Apr 23, 1:14 AM CDT	Special Weather Statement	JAN	Hinds, Rankin	46 min
Apr 23, 1:16 AM CDT	Flash Flood Warning	JAN	Hinds, Madison, Rankin	3 hr
Apr 23, 1:25 AM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Lauderdale, Newton	36 min
Apr 23, 1:32 AM CDT	Flash Flood Warning	JAN	Adams	3 hr
Apr 23, 1:33 AM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Rankin, Simpson, Smith	57 min
Apr 23, 2:02 AM CDT	Tornado Warning Tornado observed	JAN	Rankin	28 min
Apr 23, 2:12 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Jefferson	31 min
Apr 23, 2:16 AM CDT	Flash Flood Warning	JAN	Rankin, Scott, Smith	3 hr
Apr 23, 2:21 AM CDT	Flash Flood Warning	JAN	Claiborne, Copiah, Jefferson, Simpson	3 hr
Apr 23, 2:21 AM CDT	Severe Thunderstorm Warning	JAN	Jasper, Newton, Rankin, Scott, Smith	54 min
Apr 23, 3:09 AM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Lauderdale, Newton	40 min
Apr 23, 3:28 AM CDT	Flash Flood Warning	JAN	Clarke, Jasper, Lauderdale, Newton, Simpson, Smith	3 hr
Apr 23, 3:45 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Lamar, Lawrence, Marion	48 min
Apr 23, 3:57 AM CDT	Tornado Warning	JAN	Covington, Jefferson Davis, Lamar, Marion	31 min
Apr 23, 4:02 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Jasper, Jones, Smith	43 min
Apr 23, 4:04 AM CDT	Flash Flood Warning Considerable damage threat	JAN	Hinds, Madison, Rankin	4 hr
Apr 23, 4:21 AM CDT	Tornado Warning	JAN	Clarke, Jasper, Jones	39 min
Apr 23, 4:30 AM CDT	Flash Flood Warning	JAN	Oktibbeha	3 hr
Apr 23, 8:23 AM CDT	Areal Flood Warning	JAN	Hinds, Rankin	5 hr
Apr 23, 9:45 AM CDT	River Flood Warning	JAN	Simpson	59 hr
Apr 23, 9:58 AM CDT	River Flood Warning	JAN	Jones	4 days
Apr 23, 1:39 PM CDT	Special Weather Statement	JAN	Kemper	36 min
Apr 23, 1:48 PM CDT	Severe Thunderstorm Warning	JAN	Kemper	29 min
Apr 23, 2:34 PM CDT	Special Weather Statement	JAN	Jefferson Davis	41 min
Apr 23, 3:07 PM CDT	Special Weather Statement	JAN	Lauderdale	53 min
Apr 23, 3:13 PM CDT	Special Weather Statement	JAN	Jones	62 min
Apr 23, 3:29 PM CDT	Severe Thunderstorm Warning	JAN	Jones	46 min
Apr 23, 3:32 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	28 min
Apr 23, 4:06 PM CDT	Special Weather Statement	JAN	Clarke	24 min
Apr 22, 7:37 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Franklin, Tensas	38 min
Apr 22, 11:06 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Richland	54 min
Apr 22, 11:49 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Franklin, Tensas	56 min
Apr 22, 11:52 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Madison	53 min
Apr 23, 1:18 AM CDT	Flash Flood Warning	JAN	Franklin, Tensas	3 hr
Apr 23, 10:01 AM CDT	River Flood Warning	JAN	Tensas	51 hr
Apr 23, 10:01 AM CDT	River Flood Warning	JAN	Franklin	3 days

Nearby

Severe Thunderstorm Warnings in Mississippi, 2020 Severe Thunderstorm Warnings in Louisiana, 2020 Every severe thunderstorm warning 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.