Alert archive / Mississippi / Special Weather Statements in 2020

Special Weather Statement, NWS Jackson, MS

May 27, 2020Rankin County, Mississippi

NWS Jackson, MS issued this special weather statement at May 27, 2020, 3:02 PM CDT for Rankin County, Mississippi. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 27, 2020, 3:02 PM CDT (20:02 UTC)
Expired
May 27, 2020, 3:30 PM CDT
In force
28 min
Issued by
NWS Jackson, MS

County Rankin County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 22 km from the middle of the area, began a volume at 20:01 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.0 hours before the alert went out and 30 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 2020-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 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 2020-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.1939587897Sfc1 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
8 J/kg
Mixed-layer CIN
-254 J/kg
Mixed-layer LCL
1461 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, MS wrote its last area forecast discussion before this special weather statement went out at May 27, 12:40 PM CDT, 2 hours 22 minutes earlier.

Area forecast discussion, May 27, 12:40 PM CDT, 2 hours 22 minutes before
Area Forecast Discussion
National Weather Service Jackson MS
1240 PM CDT Wed May 27 2020

.UPDATE...
Updated for 18Z aviation discussion

&&

.AVIATION...
18Z TAF discussion:
Currently all of our sites are VFR, but the scattered cloud cover
and storms will change this as storms move in and out of an area
this afternoon. Scattered convection will continue through the
afternoon and will drop flight categories at a site as it moves
through. A strong wind gust may be associated with any storm as
well. This convection will taper off this evening after 00Z with
some isolated showers/storms possible through the night. Some
lowering of ceilings and visibilities will be possible at sites in
east MS around 12Z Thursday, particularly PIB/HBG/GTR. Convection
on Thursday is again anticipated but is not expected to be as
widespread as today. /10/

&&

.DISCUSSION...
Overall, not much change in the thinking for today. A marginal
risk of severe storms is still warranted as well as a mention of
heavy downpours. The current convection festering over eastern MS
will continue to be aided by the rear entrance region of an upper
jet and will be the area where stronger storms initiate this
afternoon with the additional aid of peak heating. Strong wind
gusts will be the primary threat, followed by hail and heavy
downpours. While most of the convection is expected to affect
areas east of I-55, a boundary in the western part of the CWA
currently moving eastward will help to initiate some more isolated
storms in the rest of the area today. With the scattered rainfall
and cloud cover, highs in the low 80s are expected but could be a
bit higher if an isolated location manages more sunshine than
most. /10/

Prior discussion below:

Today and Tonight...Strong ridging just offshore of the east coast,
will continue to slow the eastward progression of a closed low
centered over the southern plains and its attendant broad trough
which reside over the forecast area.  This troughing over the
region, in addition to daytime heating as highs climb into the 80s,
will continue to yield a good coverage of showers and storms across
the forecast area this morning through at least this evening.  With
better instability and lapse rates across eastern portions of the
CWA this afternoon, along with a little better wind shear compared
to Tuesday, isolated severe storms will be possible there this
afternoon into early this evening.  Damaging wind gusts to 60 mph
and hail to the size of quarters will both be possible with the most
intense storms.  In addition, heavy downpours could also result in
localized flash flooding, especially on roads and in low-lying and
poor drainage areas.  This potential could be further increased if
storms train across the same locations in a short amount of time.

A good bit of the convection will subside through the evening hours
as daytime heating is lost, and some drier air aloft gets pulled up
into the region.  Still, some isolated convection can't be ruled out
across the CWA during the overnight hours as troughing persists
across the region.  With at least partly cloudy skies across the
region, lows tonight will fall into the 60s. /19/

Thursday through next Tuesday...Showers and storms will continue
Thursday into Thursday night as a cold core low approaches the
region. We have introduced a Marginal Risk for severe
thunderstorms for most of the CWA for Thursday as a moist/unstable
air mass will exist, along with decent deep layer shear.
Scattered showers and storms will continue Friday as a cold front
approaches from the north. This activity will be moving out Friday
night into Saturday as the front moves through, and drier and
slightly cooler air is ushered into the region for the weekend.
Expect dry weather Monday and Tuesday as high pressure ridging
will be in place across the area. As for temperatures, highs will
be in the 80s through the period, then warming to near 90 for
portions of the area by Monday, and especially Tuesday. /27/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       81  63  83  64 /  71  22  28  33
Meridian      81  64  86  64 /  83  49  23  33
Vicksburg     82  65  83  65 /  39  25  35  29
Hattiesburg   82  65  88  66 /  77  37  18  35
Natchez       82  64  82  64 /  36  23  29  27
Greenville    81  65  81  65 /  68  39  51  22
Greenwood     82  64  82  64 /  72  40  50  31

&&

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

&&
Hazardous weather outlook, May 27, 2:33 PM CDT, 29 minutes before
Hazardous Weather Outlook
National Weather Service Jackson MS
233 PM CDT Wed May 27 2020

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>030-032-
034>037-040>043-047-048-053-054-059>062-281945-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar-
Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay-Choctaw-
Washington-Humphreys-Holmes-Attala-Issaquena-Sharkey-Yazoo-
Madison MS-Warren-Hinds-Claiborne-Copiah-Jefferson-Adams-
Franklin MS-Lincoln-
233 PM CDT Wed May 27 2020

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

.DAY ONE...Tonight and Thursday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Thursday

Thursday, isolated severe thunderstorms are possible. Some
thunderstorms could produce damaging wind gusts and hail.

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

MSZ031-033-038-039-044>046-049>052-055>058-063>066-072>074-281945-
Lowndes-Oktibbeha-Winston-Noxubee-Leake-Neshoba-Kemper-Rankin-
Scott-Newton-Lauderdale-Simpson-Smith-Jasper-Clarke-Lawrence-
Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest-
233 PM CDT Wed May 27 2020

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

.DAY ONE...Tonight and Thursday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...This afternoon and again Thursday

Tonight, isolated severe storms will linger into the evening.
Thursday, isolated severe thunderstorms are again possible. Some
thunderstorms could produce damaging wind gusts and hail.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/2.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 remainder
of the afternoon and Thursday.

10

&&

...HAZARD LEGEND...

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

...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/

In the hours before

Special weather statement, May 27, 2:23 PM CDT, 39 minutes before
Special Weather Statement
National Weather Service Jackson MS
223 PM CDT Wed May 27 2020

MSZ035-042-272000-
Humphreys MS-Yazoo MS-
223 PM CDT Wed May 27 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN YAZOO AND SOUTH
CENTRAL HUMPHREYS COUNTIES UNTIL 300 PM CDT...

At 223 PM CDT, Meteorologists were tracking a strong thunderstorm 8
miles south of Midnight, or 8 miles northwest of Yazoo City, moving
northeast at 10 mph.

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

This strong thunderstorm will be near...
  Yazoo City around 245 PM CDT.

Other locations impacted by this storm include Louise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3290 9040 3285 9059 3293 9066 3294 9065
      3304 9054
TIME...MOT...LOC 1923Z 234DEG 9KT 3293 9053

TW
Special weather statement, May 27, 2:35 PM CDT, 27 minutes before
Special Weather Statement
National Weather Service Jackson MS
235 PM CDT Wed May 27 2020

MSZ018-019-272000-
Sunflower MS-Bolivar MS-
235 PM CDT Wed May 27 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL SUNFLOWER AND
NORTHEASTERN BOLIVAR COUNTIES UNTIL 300 PM CDT...

At 235 PM CDT, Meteorologists were tracking a strong thunderstorm
near Shelby, moving north at 20 mph.

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

This storm will remain over mainly rural areas of north central
Sunflower and northeastern Bolivar Counties, including the following
locations... Duncan and Alligator.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3399 9066 3399 9054 3392 9057 3392 9074
      3412 9076 3412 9066
TIME...MOT...LOC 1935Z 191DEG 16KT 3399 9066

TW
Special weather statement, May 27, 2:40 PM CDT, 22 minutes before
Special Weather Statement
National Weather Service Jackson MS
240 PM CDT Wed May 27 2020

MSZ054-062-272030-
Copiah MS-Lincoln MS-
240 PM CDT Wed May 27 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN LINCOLN AND SOUTH
CENTRAL COPIAH COUNTIES UNTIL 330 PM CDT...

At 240 PM CDT, Meteorologists were tracking a strong thunderstorm
over Loyd Star, or 7 miles west of Brookhaven, moving northeast at 15
mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Loyd Star around 245 PM CDT.
  Brookhaven around 300 PM CDT.
  Wesson around 325 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3151 9060 3155 9063 3161 9063 3161 9068
      3162 9069 3179 9049 3167 9034
TIME...MOT...LOC 1940Z 229DEG 14KT 3161 9058

TW
Special weather statement, May 27, 2:41 PM CDT, 21 minutes before
Special Weather Statement
National Weather Service Jackson MS
241 PM CDT Wed May 27 2020

MSZ035-042-272045-
Humphreys MS-Yazoo MS-
241 PM CDT Wed May 27 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL YAZOO AND
SOUTHEASTERN HUMPHREYS COUNTIES UNTIL 345 PM CDT...

At 241 PM CDT, Meteorologists were tracking a strong thunderstorm
near Midnight, or 9 miles northwest of Yazoo City, moving northeast
at 10 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

This storm will remain over mainly rural areas of north central Yazoo
and southeastern Humphreys 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.

&&

LAT...LON 3310 9042 3310 9043 3305 9043 3305 9039
      3301 9037 3301 9036 3302 9034 3301 9034
      3300 9030 3292 9045 3300 9045 3306 9050
      3312 9043
TIME...MOT...LOC 1941Z 227DEG 9KT 3298 9050

TW
Special weather statement, May 27, 2:59 PM CDT, 3 minutes before
Special Weather Statement
National Weather Service Jackson MS
259 PM CDT Wed May 27 2020

MSZ054-055-272045-
Copiah MS-Simpson MS-
259 PM CDT Wed May 27 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN SIMPSON AND EAST
CENTRAL COPIAH COUNTIES UNTIL 345 PM CDT...

At 259 PM CDT, Meteorologists were tracking a strong thunderstorm
over Rockport, or 13 miles east of Hazlehurst, moving northeast at 15
mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Union around 325 PM CDT.

Other locations impacted by this storm include Georgetown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3175 9018 3181 9026 3196 9012 3188 9001
TIME...MOT...LOC 1959Z 221DEG 14KT 3181 9018

TW
Special weather statement, May 27, 3:02 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Jackson MS
302 PM CDT Wed May 27 2020

MSZ049-272030-
Rankin MS-
302 PM CDT Wed May 27 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN RANKIN COUNTY UNTIL
330 PM CDT...

At 302 PM CDT, Meteorologists were tracking a strong thunderstorm
over Cato, or near Mendenhall, moving north at 15 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Cato around 310 PM CDT.
  Johns around 320 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3205 8995 3216 8996 3216 8982 3205 8984
TIME...MOT...LOC 2002Z 178DEG 15KT 3205 8989

TW

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 8:38 PM CDTSpecial Weather StatementJANHolmes52 min
May 27, 1:22 AM CDTSpecial Weather StatementJANCopiah23 min
May 27, 1:53 AM CDTSpecial Weather StatementJANHinds52 min
May 27, 2:05 AM CDTSpecial Weather StatementJANLincoln40 min
May 27, 12:32 PM CDTSpecial Weather StatementJANForrest28 min
May 27, 12:35 PM CDTSpecial Weather StatementJANCovington25 min
May 27, 12:42 PM CDTSevere Thunderstorm WarningJANForrest48 min
May 27, 1:47 PM CDTSpecial Weather StatementJANCopiah28 min
May 27, 2:09 PM CDTSevere Thunderstorm WarningJANCopiah51 min
May 27, 2:23 PM CDTSpecial Weather StatementJANHumphreys37 min
May 27, 2:26 PM CDTSevere Thunderstorm WarningJANHumphreys, Yazoo26 min
May 27, 2:32 PM CDTSevere Thunderstorm WarningJANCopiah, Hinds, Rankin, Simpson58 min
May 27, 2:35 PM CDTSpecial Weather StatementJANCoahoma25 min
May 27, 2:40 PM CDTSpecial Weather StatementJANLincoln50 min
May 27, 2:41 PM CDTSpecial Weather StatementJANHumphreys64 min
May 27, 2:59 PM CDTSpecial Weather StatementJANSimpson46 min
May 27, 3:06 PM CDTSevere Thunderstorm WarningJANHinds, Madison, Rankin54 min
May 27, 3:08 PM CDTSevere Thunderstorm WarningJANRankin, Simpson37 min
May 27, 3:12 PM CDTSpecial Weather StatementJANHolmes33 min
May 27, 3:17 PM CDTSevere Thunderstorm WarningJANHolmes, Humphreys43 min
May 27, 3:27 PM CDTSpecial Weather StatementJANSimpson33 min
May 27, 3:34 PM CDTSevere Thunderstorm WarningJANCarroll25 min
May 27, 3:38 PM CDTSevere Thunderstorm WarningJANLeake, Madison, Rankin, Scott67 min
May 27, 3:43 PM CDTSevere Thunderstorm WarningJANRankin, Simpson47 min
May 27, 3:57 PM CDTSevere Thunderstorm WarningJANMarion28 min
May 27, 4:01 PM CDTSevere Thunderstorm WarningJANRankin, Scott, Smith44 min
May 27, 4:09 PM CDTSevere Thunderstorm WarningJANCarroll, Grenada, Montgomery67 min
May 27, 4:10 PM CDTSevere Thunderstorm WarningJANJefferson Davis50 min
May 27, 4:25 PM CDTSevere Thunderstorm WarningJANMarion35 min
May 27, 4:28 PM CDTSevere Thunderstorm WarningJANLeake, Neshoba, Scott62 min
May 27, 4:31 PM CDTSpecial Weather StatementJANSimpson29 min
May 27, 4:32 PM CDTSevere Thunderstorm WarningJANScott43 min
May 27, 4:35 PM CDTSpecial Weather StatementJANLincoln40 min
May 27, 4:44 PM CDTSpecial Weather StatementJANJefferson Davis46 min
May 27, 4:47 PM CDTSevere Thunderstorm WarningJANCovington, Jefferson Davis, Simpson43 min
May 27, 4:48 PM CDTSpecial Weather StatementJANWebster57 min
May 27, 4:55 PM CDTSevere Thunderstorm WarningJANNeshoba, Newton35 min
May 27, 4:58 PM CDTSpecial Weather StatementJANSmith32 min
May 27, 5:12 PM CDTSevere Thunderstorm WarningJANKemper, Leake, Neshoba, Winston81 min
May 27, 5:35 PM CDTSpecial Weather StatementJANSmith40 min
May 27, 5:36 PM CDTSpecial Weather StatementJANLawrence39 min
May 27, 5:49 PM CDTSpecial Weather StatementJANWebster41 min
May 27, 5:52 PM CDTSpecial Weather StatementJANSmith53 min
May 27, 5:55 PM CDTSevere Thunderstorm WarningJANMontgomery, Webster26 min
May 27, 6:03 PM CDTSevere Thunderstorm WarningJANKemper, Noxubee, Winston87 min
May 27, 6:22 PM CDTSpecial Weather StatementJANMontgomery38 min
May 27, 6:35 PM CDTSpecial Weather StatementJANClarke25 min

Nearby

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

Sources

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