Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Jackson, MS

August 18, 2012Hinds County, Mississippi

NWS Jackson, MS issued this special weather statement at Aug 18, 2012, 2:22 PM CDT for Hinds County, Mississippi. It was in force for 58 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 18, 2012, 2:22 PM CDT (19:22 UTC)
Expired: Aug 18, 2012, 3:20 PM CDT
In force: 58 min
Issued by: NWS Jackson, MS

County Hinds County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 41 km from the middle of the area, began a volume at 19:24 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 12:00Z, 7.4 hours before the alert went out and 32 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: 1913 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 828 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 42 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

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 18, 1:40 PM CDT, 42 minutes earlier.

Area forecast discussion, Aug 18, 1:40 PM CDT, 42 minutes before

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Hazardous weather outlook, Aug 18, 5:45 AM CDT, 8 hours 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
545 AM CDT SAT AUG 18 2012

ARZ074-075-MSZ018-019-025>039-191045-
ASHLEY-CHICOT-BOLIVAR-SUNFLOWER-LEFLORE-GRENADA-CARROLL-
MONTGOMERY-WEBSTER-CLAY-LOWNDES-CHOCTAW-OKTIBBEHA-WASHINGTON-
HUMPHREYS-HOLMES-ATTALA-WINSTON-NOXUBEE-
545 AM CDT SAT AUG 18 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ARKANSAS AND
NORTH CENTRAL MISSISSIPPI.

.DAY ONE...TODAY AND TONIGHT

STRONG TO LOCALLY SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON
INTO THE EVENING AS A SLOW MOVING COLD FRONT BEGINS TO EDGE SOUTH
INTO THE AREA. ANY SEVERE STORMS WILL BE CAPABLE OF PRODUCING WIND
GUSTS TO 60 MPH...HAIL TO THE SIZE OF QUARTERS...OCCASIONAL TO
FREQUENT LIGHTNING STRIKES AND TORRENTIAL DOWNPOURS OF ONE TO TWO
INCHES IN A SHORT TIME. LOCALIZED FLOODING OF POOR DRAINAGE AND LOW
LYING AREAS IS ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A RISK FOR STRONG TO SEVERE STORMS ON SUNDAY IS EXPECTED TO SHIFT
SOUTHWARD TO INCLUDE THE INTERSTATE TWENTY CORRIDOR AND POINTS SOUTH.
OTHERWISE... THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER WILL BE
LOW MUCH OF NEXT WEEK.

.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 THIS AFTERNOON OR TONIGHT.

LAZ007>009-015-016-023>026-MSZ040>066-072>074-191045-
MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-MADISON LA-
FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-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-
545 AM CDT SAT AUG 18 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST LOUISIANA AND
MUCH OF CENTRAL AND SOUTH MISSISSIPPI.

.DAY ONE...TODAY AND TONIGHT

STRONG TO LOCALLY SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON
INTO THE EVENING AS A SLOW MOVING COLD FRONT APPROACHES FROM THE
NORTH. ANY SEVERE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO
60 MPH...HAIL TO THE SIZE OF QUARTERS...OCCASIONAL TO FREQUENT
LIGHTNING STRIKES AND TORRENTIAL DOWNPOURS OF ONE TO TWO INCHES IN A
SHORT TIME. LOCALIZED FLOODING OF POOR DRAINAGE AND LOW LYING AREAS
IS ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

EXPECT A FEW ROUNDS OF STRONG THUNDERSTORMS TO BE POSSIBLE SUNDAY AND
SUNDAY NIGHT AS THE SLOW MOVING COLD FRONT SETTLES INTO THE AREA
ALONG AND SOUTH OF INTERSTATE TWENTY. A SEVERE SEVERE STORM OR TWO
IS NOT OUT OF THE QUESTION...ESPECIALLY LATE SUNDAY. THE MOST INTENSE
STORMS COULD CONTAIN WIND GUSTS FROM 50 TO 60 MPH AS WELL AS HAIL UP
TO THE SIZE OF QUARTERS. MANY STORMS WILL BE CAPABLE OF PRODUCING
FREQUENT LIGHTNING STRIKES AND HEAVY DOWNPOURS.

IN ADDITION...TORRENTIAL DOWNPOURS LASTING UP TO AN HOUR WILL BE
CAPABLE OF BRINGING A QUICK ONE TO TWO INCHES OF RAIN...ESPECIALLY
LATER SUNDAY. IF STORMS MOVE OVER THE SAME GROUND REPEATEDLY THEN
FLASH FLOODING COULD BECOME MORE LIKELY. OTHERWISE...LOW SPOTS AND
POOR DRAINAGE AREAS SHOULD BE THE MOST SUSCEPTIBLE TO HIGH WATER
ISSUES.

.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 A FEW HOURS AT A TIME THROUGH SUNDAY.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN.

40

In the hours before

Local storm report, Aug 18, 1:52 PM CDT, 30 minutes before

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Special weather statement, Aug 18, 1:53 PM CDT, 29 minutes before

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Special weather statement, Aug 18, 2:01 PM CDT, 21 minutes before

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Special weather statement, Aug 18, 2:02 PM CDT, 20 minutes before

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Special weather statement, Aug 18, 2:15 PM CDT, 7 minutes before

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Special weather statement, Aug 18, 2:22 PM CDT, 0 minutes before

MSZ048-182020-
HINDS MS-
222 PM CDT SAT AUG 18 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
222 PM CDT SAT AUG 18 2012

A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING 40 TO 50 MPH
WINDS WAS LOCATED FROM POCAHONTAS TO 4 MILES SOUTHWEST OF UTICA AT
220 PM CDT...MOVING EAST AT 20 MPH.  THIS ACTIVITY WILL AFFECT THE
CITY OF JACKSON BY 3 PM.

VERY HEAVY RAIN ALONG WITH FREQUENT CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THESE STORMS.

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.

PEOPLE IN HINDS COUNTY SHOULD MONITOR THESE STORMS CLOSELY.

LAT...LON 3206 9072 3234 9071 3234 9063 3237 9064
      3244 9059 3248 9060 3251 9052 3257 9044
      3249 9044 3249 9025 3240 9024 3240 9007
      3225 9020 3219 9020 3215 9026 3211 9025
      3209 9023 3205 9023
TIME...MOT...LOC 1920Z 283DEG 17KT 3248 9022 3232 9052
          3220 9061 3207 9066

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 7:25 PM CDT	Special Weather Statement	JAN	Sharkey	40 min
Aug 17, 7:58 PM CDT	Special Weather Statement	JAN	Leake	42 min
Aug 17, 8:16 PM CDT	Special Weather Statement	JAN	Yazoo	39 min
Aug 17, 11:38 PM CDT	Special Weather Statement	JAN	Bolivar, Sunflower	57 min
Aug 18, 12:19 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	41 min
Aug 18, 1:08 AM CDT	Special Weather Statement	JAN	Grenada	57 min
Aug 18, 2:33 AM CDT	Special Weather Statement	JAN	Carroll, Choctaw, Montgomery, Oktibbeha, Webster	57 min
Aug 18, 3:26 AM CDT	Special Weather Statement	JAN	Choctaw, Clay, Lowndes, Noxubee, Oktibbeha, Webster and 1 more	59 min
Aug 18, 4:36 AM CDT	Special Weather Statement	JAN	Lowndes, Noxubee	59 min
Aug 18, 7:08 AM CDT	Special Weather Statement	JAN	Winston	32 min
Aug 18, 9:12 AM CDT	Special Weather Statement	JAN	Bolivar	28 min
Aug 18, 9:41 AM CDT	Special Weather Statement	JAN	Bolivar	29 min
Aug 18, 11:25 AM CDT	Special Weather Statement	JAN	Humphreys	30 min
Aug 18, 11:41 AM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys	49 min
Aug 18, 12:26 PM CDT	Special Weather Statement	JAN	Adams	29 min
Aug 18, 12:48 PM CDT	Special Weather Statement	JAN	Yazoo	57 min
Aug 18, 12:53 PM CDT	Special Weather Statement	JAN	Sharkey	47 min
Aug 18, 1:01 PM CDT	Special Weather Statement	JAN	Holmes	59 min
Aug 18, 1:03 PM CDT	Severe Thunderstorm Warning	JAN	Yazoo	28 min
Aug 18, 1:26 PM CDT	Special Weather Statement	JAN	Lawrence	39 min
Aug 18, 1:37 PM CDT	Special Weather Statement	JAN	Adams, Claiborne, Jefferson	58 min
Aug 18, 1:50 PM CDT	Special Weather Statement	JAN	Madison	20 min
Aug 18, 1:53 PM CDT	Special Weather Statement	JAN	Simpson	32 min
Aug 18, 2:01 PM CDT	Special Weather Statement	JAN	Jefferson Davis	44 min
Aug 18, 2:02 PM CDT	Special Weather Statement	JAN	Simpson	48 min
Aug 18, 2:15 PM CDT	Special Weather Statement	JAN	Lawrence	40 min
Aug 18, 2:27 PM CDT	Special Weather Statement	JAN	Neshoba	43 min
Aug 18, 3:01 PM CDT	Special Weather Statement	JAN	Rankin	59 min
Aug 18, 3:31 PM CDT	Special Weather Statement	JAN	Covington	44 min
Aug 18, 3:44 PM CDT	Flash Flood Warning	JAN	Rankin	61 min
Aug 18, 4:20 PM CDT	Special Weather Statement	JAN	Lauderdale, Newton	60 min
Aug 18, 4:30 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	45 min
Aug 18, 5:03 PM CDT	Special Weather Statement	JAN	Clarke	32 min
Aug 18, 5:19 PM CDT	Special Weather Statement	JAN	Lauderdale	31 min
Aug 18, 10:13 AM CDT	Special Weather Statement	JAN	Morehouse	27 min
Aug 18, 10:43 AM CDT	Special Weather Statement	JAN	Morehouse	27 min
Aug 18, 11:30 AM CDT	Special Weather Statement	JAN	Richland, West Carroll	30 min
Aug 18, 12:01 PM CDT	Special Weather Statement	JAN	East Carroll, Franklin, West Carroll	29 min
Aug 18, 12:43 PM CDT	Special Weather Statement	JAN	Madison, Tensas	62 min
Aug 17, 9:12 PM CDT	Special Weather Statement	JAN	Chicot	38 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.