Alert archive / Mississippi / Special Weather Statements in 2018

Special Weather Statement, NWS Jackson, MS

June 20, 2018Hinds County, Mississippi

NWS Jackson, MS issued this special weather statement at Jun 20, 2018, 4:13 PM CDT for Hinds County, Mississippi. It was in force for 32 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
Jun 20, 2018, 4:13 PM CDT (21:13 UTC)
Expired
Jun 20, 2018, 4:45 PM CDT
In force
32 min
Issued by
NWS Jackson, MS

County Hinds County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 62 km from the middle of the area, began a volume at 21:12 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

Shreveport, LA (KBAD), launched 12:00Z, 9.2 hours before the alert went out and 300 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, Shreveport, LA at 12:00Z on 2018-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 370 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, Shreveport, LA at 12:00Z on 2018-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.1939Sfc1 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
370 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
708 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
0 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 Jun 20, 3:29 PM CDT, 44 minutes earlier.

Area forecast discussion, Jun 20, 3:29 PM CDT, 44 minutes before
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Hazardous weather outlook, Jun 20, 3:09 PM CDT, 1 hour 4 minutes before
Hazardous Weather Outlook
National Weather Service Jackson MS
309 PM CDT Wed Jun 20 2018

ARZ074-075-LAZ007>009-015-MSZ018-019-025>027-034-035-212015-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Bolivar-Sunflower-Leflore-Grenada-Carroll-Washington-Humphreys-
309 PM CDT Wed Jun 20 2018

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

.DAY ONE...Tonight and Thursday

FLOODING
THREAT...Limited
TIMING...Tonight

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

Flash flooding is possible tonight as heavy rain develops and
brings a widespread 1 to 3 inches of rainfall by daybreak
Thursday. Some locally heavier rain totals are possible.

Isolated severe thunderstorms are possible on Thursday, especially
in the afternoon hours. The main risk with any severe storms will
be damaging wind gusts, although hail can also not be ruled out.

(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 risk for isolated severe thunderstorms will continue Thursday
night through Friday and into Friday night as a strong disturbance
affects our region. The main risks with any severe thunderstorms
will continue to be damaging wind gusts, although hail will be
possible as well.

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

LAZ016-023-025-MSZ028>033-036>053-055>058-212015-
Madison LA-Franklin LA-Tensas-Montgomery-Webster-Clay-Lowndes-
Choctaw-Oktibbeha-Holmes-Attala-Winston-Noxubee-Issaquena-Sharkey-
Yazoo-Madison MS-Leake-Neshoba-Kemper-Warren-Hinds-Rankin-Scott-
Newton-Lauderdale-Claiborne-Simpson-Smith-Jasper-Clarke-
309 PM CDT Wed Jun 20 2018

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

.DAY ONE...Tonight and Thursday

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

Isolated severe thunderstorms are possible on Thursday, especially
in the afternoon hours. The main risk with any severe storms will
be damaging wind gusts, although hail can also not be ruled out.

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

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

The risk for isolated severe thunderstorms will continue Thursday
night through Friday and into Friday night as a strong disturbance
affects our region. The main risks with any severe thunderstorms
will continue to be damaging wind gusts, although hail will be
possible as well.

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

LAZ024-026-MSZ054-059>066-072>074-212015-
Catahoula-Concordia-Copiah-Jefferson-Adams-Franklin MS-Lincoln-
Lawrence-Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest-
309 PM CDT Wed Jun 20 2018

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

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.

...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

Special weather statement, Jun 20, 3:52 PM CDT, 21 minutes before
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Special weather statement, Jun 20, 4:00 PM CDT, 13 minutes before
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Special weather statement, Jun 20, 4:03 PM CDT, 10 minutes before
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Special weather statement, Jun 20, 4:04 PM CDT, 9 minutes before
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Special weather statement, Jun 20, 4:08 PM CDT, 5 minutes before
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Special weather statement, Jun 20, 4:13 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 7:30 PM CDTSpecial Weather StatementJANWashington45 min
Jun 19, 8:13 PM CDTSpecial Weather StatementJANBolivar, Washington47 min
Jun 20, 1:33 PM CDTSpecial Weather StatementJANHinds27 min
Jun 20, 2:31 PM CDTSpecial Weather StatementJANNoxubee29 min
Jun 20, 3:35 PM CDTSpecial Weather StatementJANSimpson25 min
Jun 20, 3:39 PM CDTSpecial Weather StatementJANFranklin36 min
Jun 20, 3:41 PM CDTSpecial Weather StatementJANAdams34 min
Jun 20, 3:52 PM CDTSpecial Weather StatementJANLowndes23 min
Jun 20, 4:00 PM CDTSpecial Weather StatementJANSimpson30 min
Jun 20, 4:03 PM CDTSpecial Weather StatementJANJefferson27 min
Jun 20, 4:04 PM CDTSpecial Weather StatementJANClaiborne26 min
Jun 20, 4:08 PM CDTSpecial Weather StatementJANLowndes37 min
Jun 20, 4:27 PM CDTSpecial Weather StatementJANRankin33 min
Jun 20, 4:29 PM CDTSpecial Weather StatementJANJefferson31 min
Jun 20, 4:31 PM CDTSpecial Weather StatementJANClaiborne29 min
Jun 20, 4:54 PM CDTSpecial Weather StatementJANClaiborne36 min
Jun 20, 5:24 PM CDTSpecial Weather StatementJANWarren36 min
Jun 20, 6:05 PM CDTSpecial Weather StatementJANClay25 min
Jun 20, 6:43 PM CDTSpecial Weather StatementJANJefferson Davis32 min
Jun 20, 6:55 PM CDTSpecial Weather StatementJANSharkey35 min
Jun 20, 4:53 PM CDTSpecial Weather StatementJANTensas37 min
Jun 20, 5:26 PM CDTSpecial Weather StatementJANTensas34 min
Jun 20, 6:01 PM CDTSpecial Weather StatementJANFranklin29 min
Jun 20, 6:03 PM CDTSpecial Weather StatementJANMadison27 min
Jun 20, 6:32 PM CDTSpecial Weather StatementJANFranklin28 min
Jun 20, 6:33 PM CDTSpecial Weather StatementJANMadison27 min
Jun 20, 6:52 PM CDTSpecial Weather StatementJANMadison38 min

Nearby

Special Weather Statements in Mississippi, 2018Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.