Alert archive / Mississippi / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 439, NWS Jackson, MS

December 27, 2018Hinds County, Madison County, Rankin County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Dec 27, 2018, 10:31 AM CST for Hinds County, Madison County, Rankin County, Mississippi. It was in force for 44 min. 1 report 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: Dec 27, 2018, 10:31 AM CST (16:31 UTC)
Expired: Dec 27, 2018, 11:15 AM CST
In force: 44 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Hinds County, MS, Madison County, MS, Rankin County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 28 km from the middle of the area, began a volume at 16:32 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
Dec 27, 10:41 AM CST	TSTM WND DMG	6 N Clinton, MS	TREES AND LINES DOWN ALONG CLINTON-TINNIN RD.

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 one storm report to this severe thunderstorm warning; the first came 10 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 27, 9:29 AM CST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 4.5 hours before the alert went out and 20 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 591 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 466 m²/s²
0-3 km storm-relative helicity: 893 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

594 
WUUS54 KJAN 271631
SVRJAN
MSC049-089-121-271715-
/O.NEW.KJAN.SV.W.0439.181227T1631Z-181227T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
1031 AM CST THU DEC 27 2018

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Central Rankin County in central Mississippi...
  Central Hinds County in central Mississippi...
  Southwestern Madison County in central Mississippi...

* Until 1115 AM CST.

* At 1031 AM CST, severe thunderstorms were located along a line
  extending from near Little Yazoo to Brownsville to near Raymond,
  moving east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Pocahontas around 1045 AM CST.
  Jackson and Clinton around 1050 AM CST.
  Annandale around 1055 AM CST.
  Madison, Ridgeland, Richland and Gluckstadt around 1100 AM CST.
  Canton around 1105 AM CST.
  Pearl and Flowood around 1110 AM CST.
  Brandon and Fannin around 1115 AM CST.

Other locations impacted by these severe thunderstorms include
Learned.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A Tornado Watch remains in effect until 600 PM CST for central
Mississippi.

LAT...LON 3272 8996 3251 8995 3223 8996 3219 9059
      3246 9050 3254 9026
TIME...MOT...LOC 1631Z 259DEG 33KT 3265 9044 3245 9043 3221 9050 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

DC

1 follow-up statement

923 
WWUS54 KJAN 271652
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1052 AM CST THU DEC 27 2018

MSC049-089-121-271715-
/O.CON.KJAN.SV.W.0439.000000T0000Z-181227T1715Z/
Rankin MS-Hinds MS-Madison MS-
1052 AM CST THU DEC 27 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM CST
FOR CENTRAL RANKIN...NORTHEASTERN HINDS AND SOUTHWESTERN MADISON
COUNTIES...

At 1052 AM CST, severe thunderstorms were located along a line
extending from 6 miles east of Myrleville to near Annandale to near
Byram, moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Annandale around 1055 AM CST.
  Madison and Ridgeland around 1100 AM CST.
  Canton and Gluckstadt around 1105 AM CST.
  Pearl and Flowood around 1110 AM CST.
  Brandon and Fannin around 1115 AM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A Tornado Watch remains in effect until 600 PM CST for central
Mississippi.

LAT...LON 3251 8995 3223 8996 3221 9036 3253 9030
      3254 9026 3272 8996
TIME...MOT...LOC 1652Z 258DEG 33KT 3269 9017 3249 9021 3225 9028 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

DC

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 Dec 27, 5:54 AM CST, 4 hours 37 minutes earlier.

Area forecast discussion, Dec 27, 5:54 AM CST, 4 hours 37 minutes before

Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
554 AM CST Thu Dec 27 2018

.UPDATE...
Updated for 12Z aviation discussion

&&

.AVIATION...
12Z TAF discussion: Widespread MVFR Cigs were observed at 1130Z
along with a gusty se wind. Gusty southerly winds are expected
through most of the TAF period, with increasing chances for SHRA
and TSRA as a line of storms moves west to east through the
region. MVFR conditions wl prevail as the storms affect each TAF
site, however brief periods of IFR or lower ceilings and
visibility may occur as the heaviest rain moves through. Wind gust
potential will diminish generally after the line of storms moves
east of each TAF site. /NF/22/

&&

.DISCUSSION...

Today and Tonight: Starting out early this morning, a low
pressure system lifting from the TX Panhandle into the Midwest
will keep a tight pressure gradient and mid-level height gradient
across our forecast area. This pattern will see continued strong
warm, moist advection through the afternoon and evening until the
associated cold front pushes into our region. Gusty winds
overnight have mostly been in the 20 to 25 mph range, however a
gust or two as high as 40 mph have been measured tonight. A Wind
Advisory remains in place through 6 PM this evening for areas
mostly likely to see gusts over 40 mph during the day, however
expect most of the highest gradient wind gust potential to be
focused this morning through early in the afternoon before the
focus turns to possibly severe thunderstorms.

Surface-based instability will be minimal to start the day, since
low clouds will limit daytime heating. But with ongoing warm
advection, a surge of temps and dewpoints around 65 degrees will
spread north from the Gulf Coast toward the Interstate 20 corridor
through the day. In this more unstable airmass, strongly sheared
thunderstorms will be capable of producing damaging wind gusts and
possibly a few brief tornadoes. Poor low-level lapse rates will
be a limiting factor for tornadoes, but marginal instability and
strong shear warrant the Slight Risk. North of the Interstate 20
corridor, isolated stronger to marginally severe thunderstorms
will still be possible; however the primary threat will be
damaging wind gusts especially if higher winds off the surface can
be mixed down by strong showers and storms.

Lastly, it must be noted that anomalously high atmospheric
moisture will be advected northward ahead of the front, increasing
the possibility for high rainfall rates and flash flooding.
Forecast PWAT values in excess of 1.5 inches are near the
climatological max for this time of year, and the combination of
instability and lift will result in efficient rainfall producing
showers and storms. The flash flooding threat will be greatest -
an Elevated Risk - for areas south and east of the Natchez Trace,
or from roughly Natchez northeast through the Golden Triangle and
through the Pine Belt. These areas have the greatest chance of
seeing more than one round of heavy rain through tomorrow morning.
There is a Flash Flood Watch in effect from Noon today through 6
AM Friday for these areas as well. Elsewhere, average rainfall
totals will be less, and the threat for Flash Flooding will be
Limited. /NF/

Friday through Wednesday: Mostly wet with warmer than normal
temperatures will be the rule. Friday morning as the first low
pressure system pulls away to the northeast, a second closed low
will be dropping over the Four Corners region. As a result, our
flow aloft will remain southwesterly and help stall the cold front
associated with the departing low pressure system. Model
consensus still suggests this cold front will stall just southeast
of our CWA Friday afternoon. The rain will taper off during the
afternoon and dry weather is expected Friday evening but, light
rain is expected back across our southern most zones before
sunrise Saturday. Models are in better agreement this run with the
evolution of this closed low and a disturbance rounding its base
that will help the precipitation spread north over our CWA
Saturday as it approaches.

Rain is expected back over our whole CWA again by Saturday
afternoon. Rain chances will continue over most of our CWA til New
Years Day when the northwest may see a brief end to the rain
before rain chances expand back across our whole CWA Wednesday.
Essentially, this second low pressure system will take until
Sunday night to lift out to the northeast and drop a trailing cold
front into our CWA Monday. The rain will end in the wake of the
cold front but a broad upper level trough dropping over the
Rockies Monday will maintain our southwest flow aloft and help
stall the cold front across our southeast. This will result in
rain chances continuing across our southeast New Years Day. The
upper level trough axis looks to shift east across our CWA
Wednesday bringing an end to the wet weather pattern and cooler
temperatures Thursday. /22/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       68  55  65  43 / 100  83  14   9
Meridian      68  61  68  46 / 100 100  47  11
Vicksburg     71  52  62  43 / 100  46  12   8
Hattiesburg   69  63  67  50 / 100 100  58  24
Natchez       71  52  63  44 / 100  53  13  15
Greenville    67  49  59  37 / 100  35   9   7
Greenwood     68  52  60  39 / 100  63  12   8

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Wind Advisory until 6 PM CST this evening for MSZ018-019-025>045-
     047>050-053-054-059-060.

     Flash Flood Watch from noon CST today through late tonight for
     MSZ030-031-033-038-039-044>046-049>052-054>058-061>066-
     072>074.

LA...Wind Advisory until 6 PM CST this evening for LAZ007>009-015-016-
     023>026.

AR...Wind Advisory until 6 PM CST this evening for ARZ074-075.

&&

NF/22

Hazardous weather outlook, Dec 27, 9:05 AM CST, 1 hour 26 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Jackson MS
905 AM CST Thu Dec 27 2018

ARZ074-075-LAZ007>009-015-016-MSZ018-019-025>029-034>037-040>043-
047-281515-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Bolivar-Sunflower-Leflore-Grenada-Carroll-Montgomery-
Webster-Washington-Humphreys-Holmes-Attala-Issaquena-Sharkey-
Yazoo-Madison MS-Warren-
905 AM CST Thu Dec 27 2018

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

.DAY ONE...Today and Tonight

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Through 6 PM

FLOODING
THREAT...Limited
TIMING...Today

NON-THUNDERSTORM WINDS
THREAT...Elevated
TIMING...Today

Isolated severe thunderstorms are possible today. Damaging wind
gusts will be the primary hazard, but a tornado cannot be ruled
out.

(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)

Non-thunderstorm wind gusts of up to 40 mph will be possible
through this afternoon. A few downed trees and power lines are
possible, especially where the soil is saturated following recent
rainfall. Travel will also be difficult for those in high profile
vehicles.

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

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

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 today
through tonight.

MSZ032-281515-
Choctaw-
905 AM CST Thu Dec 27 2018

This hazardous weather outlook is for Choctaw County,
Mississippi.

.DAY ONE...Today and Tonight

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Through 10 PM.

FLOODING
THREAT...Limited
TIMING...Today through Tonight

NON-THUNDERSTORM WINDS
THREAT...Elevated
TIMING...Today

Isolated severe thunderstorms are possible today. Damaging wind
gusts will be the primary hazard, but a tornado cannot be ruled
out.

(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)

Non-thunderstorm wind gusts of up to 40 mph will be possible
through this afternoon. A few downed trees and power lines are
possible, especially where the soil is saturated following recent
rainfall. Travel will also be difficult for those in high profile
vehicles.

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

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

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 today
through tonight.

MSZ031-039-045-046-050>052-058-281515-
Lowndes-Noxubee-Neshoba-Kemper-Scott-Newton-Lauderdale-Clarke-
905 AM CST Thu Dec 27 2018

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

.DAY ONE...Today and Tonight

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Through 10 PM

FLOODING
THREAT...Elevated
TIMING...Today through Tonight

NON-THUNDERSTORM WINDS
THREAT...Elevated
TIMING...Today

Isolated severe thunderstorms are possible today. Damaging wind
gusts will be the primary hazard, but a tornado cannot be ruled
out.

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

Areas of flash flooding are likely and some roads could be
flooded or closed, with rainfall totals near 3 to 5 inches
possible. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

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

Non-thunderstorm wind gusts of up to 40 mph will be possible
through this afternoon. A few downed trees and power lines are
possible, especially where the soil is saturated following recent
rainfall. Travel will also be difficult for those in high profile
vehicles.

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

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

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 today
through tonight.

MSZ030-033-038-044-281515-
Clay-Oktibbeha-Winston-Leake-
905 AM CST Thu Dec 27 2018

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

.DAY ONE...Today and Tonight

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Through 10 PM

FLOODING
THREAT...Elevated
TIMING...This Afternoon through early this evening

NON-THUNDERSTORM WINDS
THREAT...Elevated
TIMING...Today

Isolated severe thunderstorms are possible today. Damaging wind
gusts will be the primary hazard, but a tornado cannot be ruled
out.

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

Areas of flash flooding are likely and some roads could be
flooded or closed, with rainfall totals near 3 to 5 inches
possible. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

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

Non-thunderstorm wind gusts of up to 40 mph will be possible
through this afternoon. A few downed trees and power lines are
possible, especially where the soil is saturated following recent
rainfall. Travel will also be difficult for those in high profile
vehicles.

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

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

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 today
through tonight.

LAZ023>026-MSZ048-053-059-060-281515-
Franklin LA-Catahoula-Tensas-Concordia-Hinds-Claiborne-Jefferson-
Adams-
905 AM CST Thu Dec 27 2018

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

.DAY ONE...Today and Tonight

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Through 6 PM

FLOODING
THREAT...Limited
TIMING...Today

NON-THUNDERSTORM WINDS
THREAT...Elevated
TIMING...Today

Severe thunderstorms are possible today. Damaging wind gusts will
be the primary hazard, but a few tornadoes will be possible.

(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)

Non-thunderstorm wind gusts of up to 40 mph will be possible
through this afternoon. A few downed trees and power lines are
possible, especially where the soil is saturated following recent
rainfall. Travel will also be difficult for those in high profile
vehicles.

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

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

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 today
through tonight.

MSZ049-054-281515-
Rankin-Copiah-
905 AM CST Thu Dec 27 2018

This hazardous weather outlook is for Rankin and Copiah counties.

.DAY ONE...Today and Tonight

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Through 6 PM

FLOODING
THREAT...Elevated
TIMING...Mainly Today

NON-THUNDERSTORM WINDS
THREAT...Elevated
TIMING...Today

Severe thunderstorms are possible today. Damaging wind gusts will
be the primary hazard, but a few tornadoes will be possible.

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

Areas of flash flooding are likely and some roads could be
flooded or closed, with rainfall totals near 3 to 5 inches
possible. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

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

Non-thunderstorm wind gusts of up to 40 mph will be possible
through this afternoon. A few downed trees and power lines are
possible, especially where the soil is saturated following recent
rainfall. Travel will also be difficult for those in high profile
vehicles.

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

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

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 today
through tonight.

MSZ061-281515-
Franklin MS-
905 AM CST Thu Dec 27 2018

This hazardous weather outlook is for Franklin County Mississippi.

.DAY ONE...Today and Tonight

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Through this afternoon

FLOODING
THREAT...Elevated
TIMING...Today

NON-THUNDERSTORM WINDS
THREAT...Elevated
TIMING...Today

Severe thunderstorms are possible today. Damaging wind gusts will
be the primary hazard, but a few tornadoes will be possible.

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

Areas of flash flooding are likely and some roads could be
flooded or closed, with rainfall totals near 3 to 5 inches
possible. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

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

Non-thunderstorm wind gusts of up to 40 mph will be possible
through this afternoon. A few downed trees and power lines are
possible, especially where the soil is saturated following recent
rainfall. Travel will also be difficult for those in high profile
vehicles.

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

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

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 today
through tonight.

MSZ055>057-062>066-072>074-281515-
Simpson-Smith-Jasper-Lincoln-Lawrence-Jefferson Davis-Covington-
Jones-Marion-Lamar-Forrest-
905 AM CST Thu Dec 27 2018

This hazardous weather outlook is for portions of southern and
southeastern portions of central Mississippi.

.DAY ONE...Today and Tonight

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Through 10 PM

FLOODING
THREAT...Elevated
TIMING...Today through Tonight

NON-THUNDERSTORM WINDS
THREAT...Elevated
TIMING...Today

Severe thunderstorms are possible today. Damaging wind gusts will
be the primary hazard, but a few tornadoes will be possible.

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

Areas of flash flooding are likely and some roads could be
flooded or closed, with rainfall totals near 3 to 5 inches
possible. Some structures may be potentially threatened by high
water. Minor river flooding is also possible.

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

Non-thunderstorm wind gusts of up to 40 mph will be possible
through this afternoon. A few downed trees and power lines are
possible, especially where the soil is saturated following recent
rainfall. Travel will also be difficult for those in high profile
vehicles.

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

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

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 today
through tonight.

DL

&&

...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

Local storm report, Dec 27, 10:14 AM CST, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1014 AM CST THU DEC 27 2018

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

0844 AM     TSTM WND DMG     11 SSW DELHI            32.30N 91.55W
12/27/2018                   FRANKLIN           LA   LAW ENFORCEMENT

            MANY TREES DOWN IN AND AROUND CROWVILLE,
            TREES DOWN ON HOMES, ROOF DAMAGE AND POWER
            LINES DOWN. MUCH OF THIS IS ALONG HWY 17.
            POSSIBLE TORNADO.

&&

CE

Local storm report, Dec 27, 10:18 AM CST, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1018 AM CST THU DEC 27 2018

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

0841 AM     TSTM WND DMG     GILBERT                 32.05N 91.66W
12/27/2018                   FRANKLIN           LA   LAW ENFORCEMENT

            MANY TREES AND SOME POWER LINES DOWN.

&&

CE

Local storm report, Dec 27, 10:21 AM CST, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1021 AM CST THU DEC 27 2018

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

0843 AM     TSTM WND DMG     7 NE WINNSBORO          32.22N 91.61W
12/27/2018                   FRANKLIN           LA   LAW ENFORCEMENT

            POWER LINES DOWN, OFF HWY 17.

&&

CE

Local storm report, Dec 27, 10:26 AM CST, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1026 AM CST THU DEC 27 2018

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

0957 AM     TSTM WND DMG     7 NE VICKSBURG          32.39N 90.78W
12/27/2018                   WARREN             MS   EMERGENCY MNGR

            MULTIPLE TREES DOWNED ALONG OAK RIDGE RD,
            FREETOWN RD, AND WOODSTONE DR.

&&

DL

Local storm report, Dec 27, 10:28 AM CST, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1028 AM CST THU DEC 27 2018

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

0952 AM     TSTM WND DMG     4 NE VICKSBURG          32.37N 90.83W
12/27/2018                   WARREN             MS   EMERGENCY MNGR

            ROOF DAMAGE AT THE CULKIN WATER DISTRICT
            BUILDING OFF US 61.

&&

DL

Local storm report, Dec 27, 10:29 AM CST, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1029 AM CST THU DEC 27 2018

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

0947 AM     TSTM WND DMG     1 NNW VICKSBURG         32.35N 90.88W
12/27/2018                   WARREN             MS   EMERGENCY MNGR

            ROOF DAMAGE AT THE CENTRAL FIRE STATION.

&&

DL

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 26, 6:40 PM CST	River Flood Warning	JAN	Neshoba	14 days
Dec 26, 6:40 PM CST	River Flood Warning	JAN	Leake	5 days
Dec 26, 6:42 PM CST	River Flood Warning	JAN	Attala, Holmes	15 days
Dec 26, 8:58 PM CST	Special Weather Statement	JAN	Covington, Forrest, Jefferson Davis, Lamar, Marion	47 min
Dec 27, 9:05 AM CST	Severe Thunderstorm Warning	JAN	Issaquena, Warren	55 min
Dec 27, 9:43 AM CST	Severe Thunderstorm Warning	JAN	Hinds, Issaquena, Sharkey, Warren, Yazoo	47 min
Dec 27, 10:05 AM CST	Severe Thunderstorm Warning	JAN	Adams, Jefferson	40 min
Dec 27, 10:17 AM CST	Flash Flood Warning	JAN	Adams, Claiborne, Copiah, Franklin, Hinds, Jefferson and 1 more	3 hr
Dec 27, 10:20 AM CST	Tornado Warning	JAN	Hinds, Madison, Yazoo	55 min
Dec 27, 10:40 AM CST	Severe Thunderstorm Warning	JAN	Adams, Franklin, Jefferson	65 min
Dec 27, 10:44 AM CST	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Yazoo	46 min
Dec 27, 11:09 AM CST	Severe Thunderstorm Warning	JAN	Attala, Holmes, Leake, Madison, Yazoo	51 min
Dec 27, 11:14 AM CST	Severe Thunderstorm Warning	JAN	Leake, Madison, Rankin, Scott	46 min
Dec 27, 11:30 AM CST	Severe Thunderstorm Warning	JAN	Attala, Carroll, Choctaw, Holmes, Montgomery	45 min
Dec 27, 11:33 AM CST	Flash Flood Warning	JAN	Hinds, Madison, Rankin	3 hr
Dec 27, 11:37 AM CST	Flash Flood Warning	JAN	Copiah, Franklin, Jefferson, Lawrence, Lincoln, Simpson	3 hr
Dec 27, 11:42 AM CST	Special Weather Statement	JAN	Grenada, Montgomery	33 min
Dec 27, 11:53 AM CST	Severe Thunderstorm Warning	JAN	Attala, Leake	37 min
Dec 27, 12:15 PM CST	Special Weather Statement	JAN	Choctaw, Oktibbeha, Webster	45 min
Dec 27, 12:25 PM CST	Special Weather Statement	JAN	Neshoba, Winston	50 min
Dec 27, 12:54 PM CST	Special Weather Statement	JAN	Clay, Lowndes, Oktibbeha	51 min
Dec 27, 1:08 PM CST	Special Weather Statement	JAN	Noxubee	52 min
Dec 27, 1:47 PM CST	Special Weather Statement	JAN	Covington, Jefferson Davis	43 min
Dec 27, 1:50 PM CST	Special Weather Statement	JAN	Lowndes	25 min
Dec 27, 1:53 PM CST	Flash Flood Warning	JAN	Covington, Jefferson Davis, Lamar, Lawrence, Lincoln, Marion and 3 more	3 hr
Dec 27, 2:41 PM CST	Flash Flood Warning	JAN	Clarke, Jasper, Kemper, Lauderdale, Neshoba, Newton	2 hr
Dec 27, 2:53 PM CST	Flash Flood Warning	JAN	Forrest, Jones, Lamar	3 hr
Dec 27, 3:17 PM CST	Special Weather Statement	JAN	Jones	28 min
Dec 27, 3:26 PM CST	Special Weather Statement	JAN	Clarke	34 min
Dec 27, 4:56 PM CST	Flash Flood Warning	JAN	Covington, Jefferson Davis, Lamar, Marion	64 min
Dec 27, 5:44 PM CST	Flash Flood Warning	JAN	Covington, Forrest, Jefferson Davis, Jones, Lamar, Marion	4 hr

Nearby

Severe Thunderstorm Warnings in Mississippi, 2018 Every severe thunderstorm warning in 2018

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.