Alert archive / Mississippi / Special Weather Statements in 2020

Special Weather Statement, NWS Jackson, MS

February 6, 2020Jones County, Mississippi

NWS Jackson, MS issued this special weather statement at Feb 6, 2020, 4:21 AM CST for Jones County, Mississippi. It was in force for 24 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
Feb 6, 2020, 4:21 AM CST (10:21 UTC)
Expired
Feb 6, 2020, 4:45 AM CST
In force
24 min
Issued by
NWS Jackson, MS

County Jones County, MS

The radar

The Mobile radar (KMOB), 119 km from the middle of the area, began a volume at 10:24 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 00:00Z, 10.4 hours before the alert went out and 134 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Jackson, MS at 00:00Z on 2020-02-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 847 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 00:00Z on 2020-02-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 298 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
847 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
592 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
298 m²/s²
0-3 km storm-relative helicity
390 m²/s²
Significant tornado parameter
1.9
Supercell composite
10.5

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 Feb 6, 3:59 AM CST, 22 minutes earlier.

Area forecast discussion, Feb 6, 3:59 AM CST, 22 minutes before
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Hazardous weather outlook, Feb 5, 7:48 PM CST, 8 hours 33 minutes before
Hazardous Weather Outlook
National Weather Service Jackson MS
748 PM CST Wed Feb 5 2020

ARZ074-075-LAZ007>009-015-MSZ018-019-025-034-070200-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Bolivar-Sunflower-Leflore-Washington-
748 PM CST Wed Feb 5 2020

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

.DAY ONE...Tonight and Thursday

The probability for widespread hazardous weather is low.

.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 is not expected through next Tuesday.

MSZ029>033-037>039-042>045-047>050-053>055-059>062-070200-
Webster-Clay-Lowndes-Choctaw-Oktibbeha-Attala-Winston-Noxubee-
Yazoo-Madison MS-Leake-Neshoba-Warren-Hinds-Rankin-Scott-
Claiborne-Copiah-Simpson-Jefferson-Adams-Franklin MS-Lincoln-
748 PM CST Wed Feb 5 2020

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

.DAY ONE...Tonight and Thursday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Tonight

FLOODING
THREAT...Limited
TIMING...Tonight

The potential for a few severe storms capable of producing hail up
to quarter size continues this evening along with a limited threat
for locally heavy rainfall.

(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 this evening.

LAZ016-023>026-MSZ026>028-035-036-040-041-070200-
Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Grenada-Carroll-
Montgomery-Humphreys-Holmes-Issaquena-Sharkey-
748 PM CST Wed Feb 5 2020

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

.DAY ONE...Tonight and Thursday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Tonight

The potential for a few severe storms capable of producing hail
up to quarter size continues this evening

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

MSZ046-051-052-056>058-063>066-072>074-070200-
Kemper-Newton-Lauderdale-Smith-Jasper-Clarke-Lawrence-
Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest-
748 PM CST Wed Feb 5 2020

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

.DAY ONE...Tonight and Thursday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Tonight

FLOODING
THREAT...Limited
TIMING...Tonight

The potential for a few severe storms capable of producing
damaging wind gusts up to 60 mph, hail up to quarter size, and a
few tornadoes will continue overnight. The threat for locally
heavy rainfall will continue as well, and could increase some
late tonight as the next weather disturbance approaches.

(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 tonight.

21

&&

...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.

...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, Feb 6, 3:19 AM CST, 1 hour 2 minutes before
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Special weather statement, Feb 6, 3:28 AM CST, 53 minutes before
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Special weather statement, Feb 6, 3:47 AM CST, 34 minutes before
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Special weather statement, Feb 6, 3:57 AM CST, 24 minutes before
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Local storm report, Feb 6, 4:04 AM CST, 17 minutes before
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Special weather statement, Feb 6, 4:21 AM CST, 0 minutes before
Special Weather Statement
National Weather Service Jackson MS
421 AM CST Thu Feb 6 2020

MSZ066-074-061045-
Jones MS-Forrest MS-
421 AM CST Thu Feb 6 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN FORREST AND
SOUTHEASTERN JONES COUNTIES UNTIL 445 AM CST...

At 420 AM CST, Meteorologists were tracking a strong thunderstorm
over Sunrise, or near Petal, moving northeast at 60 mph.

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

This strong thunderstorm will be near...
  Ovett around 435 AM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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 3142 8935 3167 8894 3143 8894 3143 8914
      3125 8915 3120 8924
TIME...MOT...LOC 1020Z 231DEG 50KT 3132 8917

19

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 5, 6:11 PM CSTSpecial Weather StatementJANWebster34 min
Feb 5, 6:43 PM CSTSpecial Weather StatementJANHolmes32 min
Feb 5, 9:02 PM CSTSpecial Weather StatementJANNewton28 min
Feb 5, 9:30 PM CSTSevere Thunderstorm WarningJANLawrence, Lincoln45 min
Feb 5, 9:32 PM CSTSpecial Weather StatementJANLauderdale28 min
Feb 5, 9:41 PM CSTSevere Thunderstorm WarningJANKemper, Lauderdale, Newton31 min
Feb 5, 9:58 PM CSTSevere Thunderstorm WarningJANCovington, Jefferson Davis, Simpson, Smith47 min
Feb 5, 10:33 PM CSTSevere Thunderstorm WarningJANJasper, Smith42 min
Feb 5, 10:56 PM CSTTornado WarningJANClarke, Jasper, Lauderdale, Newton, Smith55 min
Feb 5, 11:21 PM CSTSevere Thunderstorm WarningJANJefferson Davis, Lamar, Lawrence, Marion39 min
Feb 5, 11:41 PM CSTTornado WarningJANLauderdale34 min
Feb 6, 12:00 AM CSTSevere Thunderstorm WarningJANCovington, Jasper, Jones60 min
Feb 6, 12:33 AM CSTSpecial Weather StatementJANMarion42 min
Feb 6, 12:47 AM CSTSevere Thunderstorm WarningJANClarke, Lauderdale58 min
Feb 6, 12:54 AM CSTFlash Flood WarningJANKemper, Lauderdale3 hr
Feb 6, 1:06 AM CSTSpecial Weather StatementJANJones39 min
Feb 6, 1:28 AM CSTSpecial Weather StatementJANCopiah, Franklin47 min
Feb 6, 2:11 AM CSTFlash Flood WarningJANClarke78 min
Feb 6, 3:19 AM CSTSpecial Weather StatementJANLamar26 min
Feb 6, 3:28 AM CSTSpecial Weather StatementJANCovington32 min
Feb 6, 3:47 AM CSTSpecial Weather StatementJANJones28 min
Feb 6, 3:57 AM CSTSpecial Weather StatementJANLamar33 min
Feb 6, 4:41 AM CSTSpecial Weather StatementJANForrest34 min
Feb 6, 4:43 AM CSTSpecial Weather StatementJANClarke32 min
Feb 6, 9:36 AM CSTRiver Flood WarningJANNeshoba5 days
Feb 6, 9:36 AM CSTRiver Flood WarningJANLeake21 days
Feb 6, 9:36 AM CSTRiver Flood WarningJANLeake9 days
Feb 6, 9:36 AM CSTRiver Flood WarningJANLeake21 days
Feb 6, 9:37 AM CSTRiver Flood WarningJANLawrence50 hr
Feb 6, 9:45 AM CSTRiver Flood WarningJANMadison, Yazoo37 days
Feb 6, 10:10 AM CSTRiver Flood WarningJANJones4 days
Feb 6, 10:10 AM CSTRiver Flood WarningJANClarke8 days
Feb 6, 10:12 AM CSTRiver Flood WarningJANClay10 days
Feb 6, 10:12 AM CSTRiver Flood WarningJANNoxubee25 hr

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.