Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, MS

August 19, 2021Jones County, Mississippi

NWS Jackson, MS issued this special weather statement at Aug 19, 2021, 6:43 PM CDT for Jones County, Mississippi. It was in force for 62 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: Aug 19, 2021, 6:43 PM CDT (23:43 UTC)
Expired: Aug 19, 2021, 7:45 PM CDT
In force: 62 min
Issued by: NWS Jackson, MS
Hail: 0.00 in
Wind: 50

County Jones County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 95 km from the middle of the area, began a volume at 23:46 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, 11.7 hours before the alert went out and 104 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: 1733 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 672 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 41 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 Aug 19, 6:40 PM CDT, 3 minutes earlier.

Area forecast discussion, Aug 19, 6:40 PM CDT, 3 minutes before

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Hazardous weather outlook, Aug 19, 12:30 PM CDT, 6 hours 13 minutes before

Hazardous Weather Outlook
National Weather Service Jackson MS
1230 PM CDT Thu Aug 19 2021

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
201730-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar-
Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay-Lowndes-
Choctaw-Oktibbeha-Washington-Humphreys-Holmes-Attala-Winston-
Noxubee-Issaquena-Sharkey-Yazoo-Madison MS-Leake-Neshoba-Kemper-
Warren-Hinds-Rankin-Scott-Newton-Lauderdale-Claiborne-Copiah-
Simpson-Smith-Jasper-Clarke-Jefferson-Adams-Franklin MS-Lincoln-
Lawrence-Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest-
1230 PM CDT Thu Aug 19 2021

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

.DAY ONE...Today and Tonight

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Hot and humid conditions are forecast to return to the area on
Saturday. This will result in heat stress conditions, especially
across the upper Delta where heat indices will range from 105 to
110 degrees. Heat exhaustion will be likely with prolonged outdoor
activity. Drink plenty of fluids and take breaks.

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

Dangerous heat stress will continue through the weekend and into
early next week. Heat indices of 105 to 110 degrees are expected
across much of the area. Heat exhaustion will be likely with prolonged
outdoor activity. Drink plenty of fluids and take breaks.

(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 is not expected through next Wednesday.

1

&&

...HAZARD LEGEND...

No short term hazards expected.

...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/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

In the hours before

Special weather statement, Aug 19, 4:48 PM CDT, 1 hour 55 minutes before

Special Weather Statement
National Weather Service Jackson MS
448 PM CDT Thu Aug 19 2021

ARZ074-075-LAZ007-008-192215-
Chicot AR-Ashley AR-Morehouse LA-West Carroll LA-
448 PM CDT Thu Aug 19 2021

...Strong thunderstorms will impact portions of southwestern Chicot
and Ashley Counties, northeastern Morehouse and northeastern West
Carroll Parishes through 515 PM CDT...

At 447 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles south of Ingalls to near Berlin to 7
miles northwest of Oak Grove. Movement was northeast at 20 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Strong thunderstorms will be near...
  Wilmot around 455 PM CDT.
  Parkdale around 505 PM CDT.
  Portland and Snyder around 515 PM CDT.

Other locations impacted by these storms include Kilbourne and
Blanchton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3321 9208 3324 9209 3325 9205 3328 9204
      3328 9200 3330 9200 3331 9198 3335 9199
      3335 9197 3338 9196 3340 9199 3339 9146
      3303 9120 3300 9123 3301 9126 3298 9127
      3281 9148 3306 9172 3321 9211
TIME...MOT...LOC 2147Z 215DEG 16KT 3329 9214 3311 9169 3292 9150

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

NF

Local storm report, Aug 19, 4:49 PM CDT, 1 hour 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
449 PM CDT THU AUG 19 2021

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

0330 PM     FLASH FLOOD      NEW HOPE                33.45N 88.32W
08/19/2021                   LOWNDES            MS   EMERGENCY MNGR

            FLASH FLOODING REPORTED ALONG NEW HOPE ROAD.

&&

DC

Local storm report, Aug 19, 5:29 PM CDT, 1 hour 14 minutes before

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Special weather statement, Aug 19, 6:15 PM CDT, 28 minutes before

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Special weather statement, Aug 19, 6:38 PM CDT, 5 minutes before

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Special weather statement, Aug 19, 6:43 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 7:25 PM CDT	Special Weather Statement	JAN	Simpson	50 min
Aug 18, 7:51 PM CDT	Special Weather Statement	JAN	Issaquena	39 min
Aug 18, 8:22 PM CDT	Special Weather Statement	JAN	Rankin	38 min
Aug 18, 8:25 PM CDT	Special Weather Statement	JAN	Issaquena	50 min
Aug 18, 8:42 PM CDT	Special Weather Statement	JAN	Rankin	33 min
Aug 18, 8:44 PM CDT	Special Weather Statement	JAN	Washington	46 min
Aug 18, 9:20 PM CDT	Special Weather Statement	JAN	Washington	40 min
Aug 18, 9:47 PM CDT	Special Weather Statement	JAN	Bolivar	43 min
Aug 19, 1:42 PM CDT	Special Weather Statement	JAN	Winston	33 min
Aug 19, 2:18 PM CDT	Special Weather Statement	JAN	Noxubee	27 min
Aug 19, 3:16 PM CDT	Flash Flood Warning	JAN	Lowndes	3 hr
Aug 19, 3:25 PM CDT	Severe Thunderstorm Warning	JAN	Oktibbeha	35 min
Aug 19, 3:50 PM CDT	Flash Flood Warning	JAN	Clay, Oktibbeha	80 min
Aug 19, 6:15 PM CDT	Special Weather Statement	JAN	Scott	30 min
Aug 19, 6:38 PM CDT	Special Weather Statement	JAN	Bolivar, Carroll, Holmes, Leflore, Sunflower	52 min
Aug 18, 7:12 PM CDT	Special Weather Statement	JAN	Morehouse, West Carroll	48 min
Aug 19, 4:10 PM CDT	Special Weather Statement	JAN	Morehouse	35 min
Aug 19, 5:29 PM CDT	Flash Flood Warning Considerable damage threat	JAN	Richland	102 min
Aug 18, 7:22 PM CDT	Special Weather Statement	JAN	Ashley	23 min
Aug 19, 4:48 PM CDT	Special Weather Statement	JAN	Ashley	27 min

Nearby

Special Weather Statements in Mississippi, 2021 Every special weather statement in 2021

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.