Alert archive / Mississippi / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 259, NWS Jackson, MS

June 22, 20184 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jun 22, 2018, 6:32 PM CDT for 4 counties in Mississippi. It was in force for 58 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
Jun 22, 2018, 6:32 PM CDT (23:32 UTC)
Expired
Jun 22, 2018, 7:30 PM CDT
In force
58 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Clarke County, MS, Jasper County, MS, Lauderdale County, MS, Newton County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 104 km from the middle of the area, began a volume at 23:32 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

TimeReportWhereRemark
Jun 22, 6:50 PM CDTTSTM WND DMG10 Nw Pachuta, MSSEVERAL TREES DOWN ACROSS COUNTRY ROADS AROUND ROSE HILL.
Jun 22, 6:50 PM CDTTSTM WND DMG2 Nw Heidelberg, MSGAS STATION SIGN BLOWN DOWN ONTO AN AUTOMOBILE.
Jun 22, 6:55 PM CDTTSTM WND DMG2 S Barnett, MSTREE BLOCKING COUNTY ROAD 280 JUST EAST OF HIGHWAY 11.
Jun 22, 7:15 PM CDTTSTM WND DMGDe Soto, MSREPORT OF LARGE TREE DOWN ON COUNTY ROAD 690 EAST OF HIGHWAY 145.

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 4 storm reports to this severe thunderstorm warning; the first came 18 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.

IssuedProductOfficeLasted
Jun 22, 10:55 AM CDTSevere Thunderstorm WatchSPC10 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.5 hours before the alert went out and 114 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 12:00Z on 2018-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1953 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2018-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.193958Sfc1 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
1953 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
515 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.1

Open this sounding in Storm Lab

The text

As transmitted.

231 
WUUS54 KJAN 222332
SVRJAN
MSC023-061-075-101-230030-
/O.NEW.KJAN.SV.W.0259.180622T2332Z-180623T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
632 PM CDT FRI JUN 22 2018

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Jasper County in east central Mississippi...
  Southeastern Newton County in east central Mississippi...
  Clarke County in east central Mississippi...
  Southern Lauderdale County in east central Mississippi...

* Until 730 PM CDT.

* At 632 PM CDT, severe thunderstorms were located along a line
  extending from near Garlandville to near Turnerville to near Bay
  Springs, 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...
  Garlandville around 635 PM CDT.
  Paulding and Rose Hill around 645 PM CDT.
  Orange around 655 PM CDT.
  Barnett around 700 PM CDT.
  Stonewall, Heidelberg and Savoy around 705 PM CDT.
  Stafford Springs around 710 PM CDT.
  Quitman, Sable and Goodwater around 715 PM CDT.
  Middleton and De Soto around 720 PM CDT.

Other locations impacted by these severe thunderstorms include
Pachuta, Shubuta, Louin and Hickory.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3189 8848 3183 8876 3181 8913 3188 8932
      3202 8932 3212 8923 3234 8915 3229 8843
TIME...MOT...LOC 2332Z 285DEG 33KT 3226 8912 3211 8917 3196 8931 

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

BYB
1 follow-up statement
878 
WWUS54 KJAN 230001
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
701 PM CDT FRI JUN 22 2018

MSC075-101-230010-
/O.CAN.KJAN.SV.W.0259.000000T0000Z-180623T0030Z/
Newton MS-Lauderdale MS-
701 PM CDT FRI JUN 22 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NEWTON AND
SOUTHERN LAUDERDALE COUNTIES IS CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
southeastern and east central Mississippi.

LAT...LON 3189 8848 3184 8875 3182 8898 3182 8906
      3185 8915 3206 8895 3222 8890 3223 8844
TIME...MOT...LOC 0000Z 285DEG 33KT 3220 8885 3205 8890 3190 8904 

$$

MSC023-061-230030-
/O.CON.KJAN.SV.W.0259.000000T0000Z-180623T0030Z/
Jasper MS-Clarke MS-
701 PM CDT FRI JUN 22 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR SOUTHEASTERN JASPER AND CLARKE COUNTIES...

At 700 PM CDT, severe thunderstorms were located along a line
extending from near Stonewall to near Orange to near Heidelberg,
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...
  Stonewall around 705 PM CDT.
  Quitman, Sable and Goodwater around 715 PM CDT.
  Middleton and De Soto around 720 PM CDT.
  Sykes around 725 PM CDT.
  Crandall and Snell around 730 PM CDT.

Other locations impacted by these severe thunderstorms include
Pachuta and Shubuta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3189 8848 3184 8875 3182 8898 3182 8906
      3185 8915 3206 8895 3222 8890 3223 8844
TIME...MOT...LOC 0000Z 285DEG 33KT 3220 8885 3205 8890 3190 8904 

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

BYB

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 Jun 22, 4:35 PM CDT, 1 hour 57 minutes earlier.

Area forecast discussion, Jun 22, 4:35 PM CDT, 1 hour 57 minutes before
Area Forecast Discussion
National Weather Service Jackson MS
435 PM CDT Fri Jun 22 2018

...SEVERE THUNDERSTORMS POSSIBLE THROUGH EARLY THIS EVENING OVER
PORTIONS OF THE REGION...

.DISCUSSION...

Through the day Saturday:

Solid convective cluster has finally taken shape over the
northwest portion of the forecast area in the last few hours, with
this cluster advancing steadily southeast toward the heart of the
region. Throughout the day convection has shown a tendency to
"back-build" into an impressive nose of warmth and moisture
advection aloft anchored over the Arklamiss Delta. Lately this
advection feature has opened up a bit and is less focused, aiding
the ability of convection to start propagating southeast.
Meanwhile, the cold pool from persistent convection over
northwestern zones throughout the day has generally advanced well
southwest of most vigorous convection, thus ensuring the bulk of
storms were "elevated" above the surface, reducing their
respective potential to produce severe weather.

Anyway, latest trends are increasing severe potential once again
into early this evening, especially over the western two-thirds of
current SVR watch # 197. The main risk through early this evening
will be damaging wind gusts, although some hail (and even a stray
and brief tornado) cannot be ruled out owing to seasonably
impressive low level shear. The SVR watch currently is set to
expire at 7 pm, but given trends it is certainly possible it may
have to be extended in time a few hours, at least south of I-20.
Flooding was a large concern north of I-20 over the Arklamiss
Delta, but the trend toward forward-propagation (i.e., movement)
is somewhat reducing the threat of at least major flooding.
Thoughts are that the convective cluster should exit the region to
the south/southeast by mid to late evening with a good deal of the
shower and storm ending in its wake.

However, latest expectations are that composite moisture
convergence and advection will increase well upstream (to the
west/northwest) of our region this evening in advance of another
vigorous storm cluster developing toward the Red River Valley.
There is some potential either this cluster, or another batch of
thunderstorms induced by this cluster, will progress east/south
down the re-orienting baroclinic zone and pass in the vicinity of
our northern zones late tonight through tomorrow morning. A
MARGINAL risk of severe thunderstorms was included in the graphics
and HWO to handle this threat, but due to a high degree of
uncertainty in this chaotic convective regime, there is some
chance the threat will be either removed later or even upgraded.

Tomorrow, by midday any storms passing through northern zones
should be largely to our east or lifting to the north, leaving are
region partly cloudy, seasonably breezy, and very humid. High
temperatures getting into the lower 90s (and approaching the mid
90s in a spot or two) should yield heat index value near or
exceeding the century mark over the majority of the area by the
afternoon. Currently thinking heat advisory thresholds will not be
met tomorrow so will continue to just highlight the heat stress in
the graphics and HWO. /BB/

Saturday night through the work week...

The story of the weekend into the work week will be that of
increasing heat and humidity. The upper trough will be to our east,
which will leave zonal flow and/or broad ridging across the area.
With moisture left in place, this will allow for heat stress issues
to begin to be a concern for much of the area on Sunday. In
addition, capping should allow for a decrease in shower/storm
activity. This heat concern will continue through much of the week
for entire area as high pressure will expand west from the Atlantic.
As heights rise, temperatures will also be increasingly warmer with
some locations seeing highs in the mid 90s. This, combined with
dewpoints in the mid 70s, will bring heat indices near 105 degrees.
In some instances, this threshold will be exceeded. Heat advisories
may be likely this week. One caveat to this may be the increased
potential for diurnal showers and storms through the week. For
residents planning outdoor activities, it will be wise to continue
to monitor the potential for higher heat indices through the week.
/28/

&&

.AVIATION...
18Z TAF discussion:

Most ceilings (at least away from the midst of thunderstorm
activity) have improved to VFR at this point although there remain
lots of scattered to broken decks near or above 3 kft around the
region. Main thunderstorm activity is training southeast across SE
AR, NE LA, and SW MS, and will continue to do so through the
afternoon hours. Other pockets of more isolated storms will also
tend to pop up through the day. Any locations impacted by storms
could experience very gusty winds and temporary IFR conditions
through early this evening. Most activity will diminish by late
evening with low level ceiling issues, mainly in the VFR range,
expected to build in again late tonight in most areas. There is
potential for additional thunderstorm activity to approach from
the northwest late tonight and may impact GLH/GWO/CBM/GTR corridor
late tonight through Saturday morning. Otherwise, expect surface
winds away from thunderstorms to be mainly from the southwest at
10 to 15 mph and occasionally gusty. /BB/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       72  92  74  93 /  40  10   3   7
Meridian      73  94  74  94 /  34  15   3   7
Vicksburg     73  92  74  93 /  44  10   3   8
Hattiesburg   73  93  74  93 /  28  10   3  11
Natchez       74  91  74  92 /  48  10   5  10
Greenville    73  91  75  92 /  28  27   6   5
Greenwood     72  91  74  91 /  25  27   6   7

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...None.
LA...None.
AR...None.

&&

28/BB
Hazardous weather outlook, Jun 22, 3:44 PM CDT, 2 hours 48 minutes before
Hazardous Weather Outlook
National Weather Service Jackson MS
344 PM CDT Fri Jun 22 2018

ARZ074-075-MSZ034-232045-
Ashley-Chicot-Washington-
344 PM CDT Fri Jun 22 2018

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

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Mainly through the rest of this afternoon

FLOODING
THREAT...Elevated
TIMING...Through the remainder of this afternoon

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Severe thunderstorms capable of producing damaging wind gusts and
hail are possible through early this evening. A brief tornado
cannot be ruled out as well.

Isolated severe thunderstorms will also be possible late tonight,
with again the main threats being hail and damaging winds gusts.

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

Flash flooding is likely as rainfall totals today range from 2 to
5 inches with locally higher amounts.

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

Maximum heat index values approaching 105 degrees are possible on
Saturday. This may result in elevated heat stress levels.

(https://www.weather.gov/images/jan/graphicast/4.png)

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

Maximum heat index values approaching 105 degrees are possible on
Sunday through early next week. This may result in elevated heat
stress levels.

(https://www.weather.gov/images/jan/graphicast/4.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 remainder
of the afternoon through tonight.

MSZ018-019-025-027-232045-
Bolivar-Sunflower-Leflore-Carroll-
344 PM CDT Fri Jun 22 2018

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

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...The rest of this afternoon through tonight

FLOODING
THREAT...Limited
TIMING...Through the remainder of this afternoon

Isolated severe thunderstorms capable of producing damaging wind
gusts and hail are possible through tonight.

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

Flash flooding is possible through early this evening as rainfall
totals range from 1 to 3 inches with locally higher amounts.

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

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

Maximum heat index values approaching 105 degrees are possible on
Sunday through early next week. This may result in elevated heat
stress levels.

(https://www.weather.gov/images/jan/graphicast/4.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 remainder
of the afternoon through tonight.

MSZ026-028>030-032-232045-
Grenada-Montgomery-Webster-Clay-Choctaw-
344 PM CDT Fri Jun 22 2018

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

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...The rest of this afternoon through tonight

Isolated severe thunderstorms capable of producing damaging wind
gusts and hail are possible through tonight.

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

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

Maximum heat index values approaching 105 degrees are possible on
Sunday through early next week. This may result in elevated heat
stress levels.

(https://www.weather.gov/images/jan/graphicast/4.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 remainder
of the afternoon through tonight.

MSZ031-033-038-039-232045-
Lowndes-Oktibbeha-Winston-Noxubee-
344 PM CDT Fri Jun 22 2018

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

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...The rest of this afternoon through tonight

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Isolated severe thunderstorms capable of producing damaging wind
gusts and hail are possible through tonight.

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

Maximum heat index values approaching 105 degrees are possible on
Saturday. This may result in elevated heat stress levels.

(https://www.weather.gov/images/jan/graphicast/4.png)

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

Maximum heat index values approaching 105 degrees are possible on
Sunday through early next week. This may result in elevated heat
stress levels.

(https://www.weather.gov/images/jan/graphicast/4.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 remainder
of the afternoon through tonight.

LAZ007>009-015-016-023-025-MSZ040-041-047-232045-
Morehouse-West Carroll-East Carroll-Richland-Madison LA-
Franklin LA-Tensas-Issaquena-Sharkey-Warren-
344 PM CDT Fri Jun 22 2018

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

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Through the remainder of this afternoon

FLOODING
THREAT...Elevated
TIMING...Through the remainder of this afternoon

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Severe thunderstorms capable of producing damaging wind gusts and
hail are possible through early this evening. A brief tornado
cannot be ruled out as well.

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

Flash flooding is likely as rainfall totals today range from 2 to
5 inches with locally higher amounts.

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

Maximum heat index values approaching 105 degrees are possible on
Saturday. This may result in elevated heat stress levels.

(https://www.weather.gov/images/jan/graphicast/4.png)

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

Maximum heat index values approaching 105 degrees are possible on
Sunday through early next week. This may result in elevated heat
stress levels.

(https://www.weather.gov/images/jan/graphicast/4.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 remainder
of the afternoon.

MSZ035>037-232045-
Humphreys-Holmes-Attala-
344 PM CDT Fri Jun 22 2018

This hazardous weather outlook is for portions of central
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...The rest of this afternoon through tonight

FLOODING
THREAT...Limited
TIMING...Through the remainder of this afternoon

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Isolated severe thunderstorms capable of producing damaging wind
gusts and hail are possible through early this evening. A brief
tornado cannot be ruled out as well.

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

Flash flooding is possible into early this evening as rainfall
totals range from 1 to 3 inches with locally higher amounts.

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

Maximum heat index values approaching 105 degrees are possible on
Saturday. This may result in elevated heat stress levels.

(https://www.weather.gov/images/jan/graphicast/4.png)

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

Maximum heat index values approaching 105 degrees are possible on
Sunday through early next week. This may result in elevated heat
stress levels.

(https://www.weather.gov/images/jan/graphicast/4.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 remainder
of the afternoon through tonight.

LAZ024-MSZ042>044-048>050-053-054-059-232045-
Catahoula-Yazoo-Madison MS-Leake-Hinds-Rankin-Scott-Claiborne-
Copiah-Jefferson-
344 PM CDT Fri Jun 22 2018

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

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Through the remainder of this afternoon

FLOODING
THREAT...Limited
TIMING...Through the remainder of this afternoon

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Severe thunderstorms capable of producing damaging wind gusts and
hail are possible through early this evening. A brief tornado
cannot be ruled out as well.

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

Flash flooding is possible through early this evening as rainfall
totals today range from 1 to 3 inches with locally higher
amounts.

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

Maximum heat index values approaching 105 degrees are possible on
Saturday. This may result in elevated heat stress levels.

(https://www.weather.gov/images/jan/graphicast/4.png)

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

Maximum heat index values approaching 105 degrees are possible on
Sunday through early next week. This may result in elevated heat
stress levels.

(https://www.weather.gov/images/jan/graphicast/4.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 remainder
of the afternoon.

MSZ045-046-051-052-055>058-061>064-232045-
Neshoba-Kemper-Newton-Lauderdale-Simpson-Smith-Jasper-Clarke-
Franklin MS-Lincoln-Lawrence-Jefferson Davis-
344 PM CDT Fri Jun 22 2018

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

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Through the remainder of this afternoon

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Severe thunderstorms capable of producing damaging wind gusts and
hail are possible through early this evening. A brief tornado
cannot be ruled out as well.

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

Maximum heat index values approaching 105 degrees are possible on
Saturday. This may result in elevated heat stress levels.

(https://www.weather.gov/images/jan/graphicast/4.png)

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

Maximum heat index values approaching 105 degrees are possible on
Sunday through early next week. This may result in elevated heat
stress levels.

(https://www.weather.gov/images/jan/graphicast/4.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 remainder
of the afternoon.

LAZ026-MSZ060-065-066-072>074-232045-
Concordia-Adams-Covington-Jones-Marion-Lamar-Forrest-
344 PM CDT Fri Jun 22 2018

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

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Through the remainder of this afternoon

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Isolated severe thunderstorms capable of producing damaging wind
gusts and hail are possible through early this evening.

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

Maximum heat index values approaching 105 degrees are possible on
Saturday. This may result in elevated heat stress levels.

(https://www.weather.gov/images/jan/graphicast/4.png)

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

Maximum heat index values approaching 105 degrees are possible on
Sunday through early next week. This may result in elevated heat
stress levels.

(https://www.weather.gov/images/jan/graphicast/4.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 remainder
of the afternoon.

50

&&

...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.

*EXCESSIVE HEAT*
Extreme...Maximum heat index greater than 110 degrees for 3 or
 more days in a row and/or air temperatures greater than 107
 degrees.
Significant...Maximum heat index greater than 110 degrees
 and/or air temperatures greater than 105 degrees.
Elevated...Maximum heat index 105 to 110 degrees and/or air
 temperatures greater than 103 degrees.
Limited...Maximum heat index near 105 degrees and/or air
 temperatures 100 to 103 degrees.

...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

Tropical page...
   https://www.weather.gov/jan/srh/tropical?office=jan
National Hurricane Center Home Page...
   https://www.nhc.noaa.gov/
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)...
   www.spc.noaa.gov/
Meso Analysis...
   www.spc.noaa.gov/exper/mesoanalysis/
Day 1 through 3 Outlooks...
   www.spc.noaa.gov/products/outlook/
Storm Reports...
   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...
   www.wpc.ncep.noaa.gov/nationalfloodoutlook/index.html
Day 1 through 3 Excessive Rainfall...
   www.wpc.ncep.noaa.gov/qpf/excess_rain.shtml
Excessive Rainfall Discussion...
   www.wpc.ncep.noaa.gov/discussions/qpferd.html
Day 1 through 7 QPF...
   www.wpc.ncep.noaa.gov/qpf/qpf2.shtml
QPF Discussion...
   www.wpc.ncep.noaa.gov/discussions/qpfpfd.html

In the hours before

Local storm report, Jun 22, 3:59 PM CDT, 2 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
359 PM CDT FRI JUN 22 2018

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

0345 PM     FLASH FLOOD      DERMOTT                 33.53N 91.43W
06/22/2018                   CHICOT             AR   EMERGENCY MNGR

            SEVERAL CITY STREETS INUNDATED WITH SEVERAL
            INCHES OF WATER.

&&

AW
Special weather statement, Jun 22, 5:10 PM CDT, 1 hour 22 minutes before
Special Weather Statement
National Weather Service Jackson MS
510 PM CDT FRI JUN 22 2018

MSZ043-048-049-222315-
Hinds MS-Rankin MS-Madison MS-
510 PM CDT FRI JUN 22 2018

...A STRONG THUNDERSTORM WILL AFFECT RANKIN...CENTRAL HINDS AND
SOUTHERN MADISON COUNTIES UNTIL 615 PM CDT...

At 509 PM CDT, Meteorologists were tracking a strong thunderstorm
over Gluckstadt, or near Madison, moving southeast at 40 mph.

Wind gusts up to 50 mph will be possible with this storm.

This strong thunderstorm will be near...
  Fannin and Goshen Springs around 525 PM CDT.
  Brandon around 530 PM CDT.
  Pelahatchie around 540 PM CDT.
  Johns around 555 PM CDT.

Other locations impacted by this storm include Puckett.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
central Mississippi.

LAT...LON 3207 9054 3246 9041 3269 8995 3249 8976
      3236 8973 3206 8973
TIME...MOT...LOC 2209Z 313DEG 36KT 3250 9011

GRG
Special weather statement, Jun 22, 5:36 PM CDT, 56 minutes before
Special Weather Statement
National Weather Service Jackson MS
536 PM CDT FRI JUN 22 2018

LAZ007-222300-
Morehouse LA-
536 PM CDT FRI JUN 22 2018

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN MOREHOUSE PARISH
UNTIL 600 PM CDT...

At 536 PM CDT, Meteorologists were tracking a strong thunderstorm
near Sterlington, or near Bastrop, moving east at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

This strong thunderstorm will be near...
  Bastrop around 550 PM CDT.

Other locations impacted by this storm include Collinston, Mer Rouge
and Oak Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
northeastern Louisiana.

LAT...LON 3286 9172 3256 9177 3257 9180 3256 9182
      3261 9193 3266 9191 3266 9194 3271 9197
      3270 9202 3271 9204 3270 9204 3269 9205
      3270 9205 3273 9207 3274 9205 3276 9206
      3279 9205 3284 9206 3286 9207
TIME...MOT...LOC 2236Z 281DEG 22KT 3276 9202

17
Special weather statement, Jun 22, 6:00 PM CDT, 32 minutes before
Special Weather Statement
National Weather Service Jackson MS
600 PM CDT FRI JUN 22 2018

MSZ019-034-222330-
Washington MS-Sunflower MS-
600 PM CDT FRI JUN 22 2018

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN SUNFLOWER AND
SOUTHEASTERN WASHINGTON COUNTIES UNTIL 630 PM CDT...

At 559 PM CDT, Meteorologists were tracking a strong thunderstorm
near Wayside, or near Avon, moving east at 35 mph.

Winds in excess of 40 mph will be possible with this storm.

This strong thunderstorm will be near...
  Estill and Tribbett around 610 PM CDT.
  Hollandale around 615 PM CDT.
  Darlove around 620 PM CDT.

Other locations impacted by this storm include Arcola.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
west central Mississippi.

LAT...LON 3336 9067 3327 9070 3327 9072 3326 9073
      3323 9073 3322 9071 3309 9076 3310 9079
      3322 9105 3340 9099
TIME...MOT...LOC 2259Z 287DEG 30KT 3329 9095

17
Special weather statement, Jun 22, 6:14 PM CDT, 18 minutes before
Special Weather Statement
National Weather Service Jackson MS
614 PM CDT FRI JUN 22 2018

LAZ016-025-MSZ047-222345-
Tensas LA-Madison LA-Warren MS-
614 PM CDT FRI JUN 22 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN TENSAS...
SOUTHEASTERN MADISON PARISHES IN NORTHEASTERN LOUISIANA AND
SOUTHWESTERN WARREN COUNTIES UNTIL 645 PM CDT...

At 614 PM CDT, Meteorologists were tracking a strong thunderstorm
over Afton, or 12 miles south of Tallulah, moving southeast at 25
mph.

Winds in excess of 40 mph will be possible with this storm.

This storm will remain over mainly rural areas of northeastern
Tensas...southeastern Madison Parishes in northeastern Louisiana and
southwestern Warren Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
northeastern Louisiana...and southwestern and west central
Mississippi.

LAT...LON 3234 9118 3227 9094 3209 9105 3208 9108
      3205 9108 3205 9109 3219 9130
TIME...MOT...LOC 2314Z 303DEG 22KT 3223 9117

17
Special weather statement, Jun 22, 6:16 PM CDT, 16 minutes before
Special Weather Statement
National Weather Service Jackson MS
616 PM CDT FRI JUN 22 2018

MSZ051-056-057-222345-
Smith MS-Newton MS-Jasper MS-
616 PM CDT FRI JUN 22 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN JASPER...SOUTHERN
NEWTON AND NORTHERN SMITH COUNTIES UNTIL 645 PM CDT...

At 616 PM CDT, Meteorologists were tracking strong thunderstorms
along a line extending from Lawrence to near Pineville to White Oak.
Movement was east at 40 mph.

Winds in excess of 40 mph will be possible with these storms.

Strong thunderstorms will be near...
  Lawrence, Pineville and Roberts around 620 PM CDT.
  Newton and Garlandville around 630 PM CDT.

Other locations impacted by these storms include Montrose, Louin and
Hickory.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
central Mississippi.

LAT...LON 3210 8907 3202 8930 3205 8973 3207 8973
      3215 8943 3222 8938 3222 8932 3232 8932
      3239 8928 3237 8892
TIME...MOT...LOC 2316Z 279DEG 34KT 3233 8926 3214 8936 3206 8968

17

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 12:15 AM CDTSevere Thunderstorm WarningJANClay45 min
Jun 22, 3:15 AM CDTSpecial Weather StatementJANOktibbeha60 min
Jun 22, 7:49 AM CDTSevere Thunderstorm WarningJANBolivar, Sunflower41 min
Jun 22, 9:08 AM CDTSpecial Weather StatementJANGrenada37 min
Jun 22, 9:24 AM CDTSevere Thunderstorm WarningJANGrenada31 min
Jun 22, 9:54 AM CDTSpecial Weather StatementJANBolivar36 min
Jun 22, 10:31 AM CDTSevere Thunderstorm WarningJANIssaquena59 min
Jun 22, 11:07 AM CDTSevere Thunderstorm WarningJANIssaquena, Sharkey, Warren, Yazoo53 min
Jun 22, 11:22 AM CDTSevere Thunderstorm WarningJANWarren39 min
Jun 22, 11:54 AM CDTSpecial Weather StatementJANHinds51 min
Jun 22, 1:02 PM CDTSevere Thunderstorm WarningJANIssaquena43 min
Jun 22, 1:10 PM CDTSevere Thunderstorm WarningJANIssaquena, Sharkey50 min
Jun 22, 2:13 PM CDTSevere Thunderstorm WarningJANWashington47 min
Jun 22, 3:23 PM CDTSpecial Weather StatementJANHinds37 min
Jun 22, 3:26 PM CDTSpecial Weather StatementJANHumphreys34 min
Jun 22, 4:04 PM CDTSevere Thunderstorm WarningJANIssaquena, Sharkey56 min
Jun 22, 4:55 PM CDTSevere Thunderstorm WarningJANIssaquena, Sharkey, Warren50 min
Jun 22, 5:10 PM CDTSpecial Weather StatementJANHinds, Madison, Rankin65 min
Jun 22, 5:16 PM CDTSevere Thunderstorm WarningJANHinds, Madison, Rankin, Scott, Smith34 min
Jun 22, 5:24 PM CDTSevere Thunderstorm WarningJANHinds, Madison, Warren, Yazoo66 min
Jun 22, 5:42 PM CDTSevere Thunderstorm WarningJANWarren30 min
Jun 22, 6:00 PM CDTSpecial Weather StatementJANWashington30 min
Jun 22, 6:16 PM CDTSpecial Weather StatementJANSmith29 min
Jun 22, 6:17 PM CDTSevere Thunderstorm WarningJANHinds, Rankin39 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2018Every 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.