Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Jackson, MS

August 17, 2012Lowndes County, Mississippi

NWS Jackson, MS issued this special weather statement at Aug 17, 2012, 4:20 AM CDT for Lowndes County, Mississippi. It was in force for 30 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 17, 2012, 4:20 AM CDT (09:20 UTC)
Expired: Aug 17, 2012, 4:50 AM CDT
In force: 30 min
Issued by: NWS Jackson, MS

County Lowndes County, MS

The radar

The Columbus AFB radar (KGWX), 50 km from the middle of the area, began a volume at 09:21 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

Birmingham, AL (KBMX), launched 00:00Z, 9.3 hours before the alert went out and 149 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: 1257 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1382 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 17, 12:34 AM CDT, 3 hours 46 minutes earlier.

Area forecast discussion, Aug 17, 12:34 AM CDT, 3 hours 46 minutes before

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Hazardous weather outlook, Aug 17, 12:30 AM CDT, 3 hours 50 minutes before

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In the hours before

Special weather statement, Aug 17, 1:58 AM CDT, 2 hours 22 minutes before

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Special weather statement, Aug 17, 2:09 AM CDT, 2 hours 11 minutes before

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Special weather statement, Aug 17, 2:18 AM CDT, 2 hours 2 minutes before

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Special weather statement, Aug 17, 2:37 AM CDT, 1 hour 43 minutes before

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Special weather statement, Aug 17, 3:16 AM CDT, 1 hour 4 minutes before

MSZ034-040-041-170845-
WASHINGTON MS-SHARKEY MS-ISSAQUENA MS-
316 AM CDT FRI AUG 17 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
316 AM CDT FRI AUG 17 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
35 TO 45 MPH WINDS WAS LOCATED 3 MILES NORTHWEST OF GLEN ALLAN AT 316
AM CDT...MOVING EAST AT 20 MPH.

VERY HEAVY RAIN ALONG WITH FREQUWENT CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS STORM.

PEOPLE IN NORTH CENTRAL ISSAQUENA...NORTHERN SHARKEY AND SOUTHERN
WASHINGTON COUNTIES SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3303 9114 3304 9112 3307 9113 3313 9113
      3313 9109 3316 9108 3314 9071 3292 9074
      3297 9108 3299 9111 3298 9114
TIME...MOT...LOC 0816Z 276DEG 17KT 3306 9102

JA

Special weather statement, Aug 17, 4:20 AM CDT, 0 minutes before

MSZ030-031-170950-
LOWNDES MS-CLAY MS-
420 AM CDT FRI AUG 17 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
420 AM CDT FRI AUG 17 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED 3 MILES EAST OF BENT OAK AT 420 AM
CDT...MOVING EAST AT 20 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS STORM.

PEOPLE IN EXTREME SOUTHEASTERN CLAY AND SOUTHERN LOWNDES COUNTIES
SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3349 8828 3343 8828 3329 8830 3330 8858
      3356 8855 3354 8827 3350 8827
TIME...MOT...LOC 0920Z 273DEG 17KT 3344 8847

JA

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 7:02 PM CDT	Special Weather Statement	JAN	Lamar	58 min
Aug 16, 7:13 PM CDT	Severe Thunderstorm Warning	JAN	Attala	43 min
Aug 16, 7:18 PM CDT	Severe Thunderstorm Warning	JAN	Lamar, Marion	39 min
Aug 16, 7:28 PM CDT	Special Weather Statement	JAN	Carroll	27 min
Aug 16, 8:05 PM CDT	Special Weather Statement	JAN	Montgomery	45 min
Aug 16, 8:43 PM CDT	Flash Flood Warning	JAN	Attala, Carroll	60 min
Aug 17, 1:58 AM CDT	Special Weather Statement	JAN	Bolivar	32 min
Aug 17, 2:09 AM CDT	Special Weather Statement	JAN	Bolivar	31 min
Aug 17, 2:18 AM CDT	Special Weather Statement	JAN	Leflore	32 min
Aug 17, 2:37 AM CDT	Special Weather Statement	JAN	Washington	28 min
Aug 17, 3:16 AM CDT	Special Weather Statement	JAN	Sharkey	29 min
Aug 17, 4:58 AM CDT	Flash Flood Warning	JAN	Lowndes, Oktibbeha	2 hr
Aug 17, 5:31 AM CDT	Special Weather Statement	JAN	Hinds, Madison, Rankin	59 min
Aug 17, 6:26 AM CDT	Special Weather Statement	JAN	Copiah, Jasper, Newton, Simpson, Smith	59 min
Aug 17, 6:29 AM CDT	Special Weather Statement	JAN	Clarke, Lauderdale	61 min
Aug 17, 7:13 AM CDT	Special Weather Statement	JAN	Clarke, Jasper	32 min
Aug 17, 9:20 AM CDT	Special Weather Statement	JAN	Issaquena	30 min
Aug 17, 9:25 AM CDT	Special Weather Statement	JAN	Rankin	30 min
Aug 17, 9:41 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey	49 min
Aug 17, 9:48 AM CDT	Special Weather Statement	JAN	Simpson	32 min
Aug 17, 10:08 AM CDT	Special Weather Statement	JAN	Yazoo	32 min
Aug 17, 10:12 AM CDT	Special Weather Statement	JAN	Rankin	33 min
Aug 17, 10:33 AM CDT	Special Weather Statement	JAN	Hinds	32 min
Aug 17, 10:46 AM CDT	Special Weather Statement	JAN	Rankin, Smith	29 min
Aug 17, 6:55 PM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Sharkey	24 min
Aug 17, 8:08 AM CDT	Special Weather Statement	JAN	Richland	32 min
Aug 17, 8:35 AM CDT	Special Weather Statement	JAN	Morehouse	30 min
Aug 17, 9:22 AM CDT	Special Weather Statement	JAN	Chicot	28 min

Nearby

Special Weather Statements in Mississippi, 2012 Every special weather statement in 2012

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.