Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Jackson, MS

August 17, 2012Yazoo County, Mississippi

NWS Jackson, MS issued this special weather statement at Aug 17, 2012, 8:16 PM CDT for Yazoo County, Mississippi. It was in force for 39 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, 8:16 PM CDT (01:16 UTC)
Expired
Aug 17, 2012, 8:55 PM CDT
In force
39 min
Issued by
NWS Jackson, MS

County Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 66 km from the middle of the area, began a volume at 01:15 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

Little Rock, AR (KBYH), launched 00:00Z, 1.3 hours before the alert went out and 219 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, Little Rock, AR at 00:00Z on 2012-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1405 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, Little Rock, AR at 00:00Z on 2012-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.19395878Sfc1 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
1405 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
994 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
189 m²/s²
Significant tornado parameter
0.7
Supercell composite
3.6

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, 5:48 PM CDT, 2 hours 28 minutes earlier.

Area forecast discussion, Aug 17, 5:48 PM CDT, 2 hours 28 minutes before
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Hazardous weather outlook, Aug 17, 3:02 PM CDT, 5 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
302 PM CDT FRI AUG 17 2012

MSZ029>033-037>039-044>046-182015-
WEBSTER-CLAY-LOWNDES-CHOCTAW-OKTIBBEHA-ATTALA-WINSTON-NOXUBEE-
LEAKE-NESHOBA-KEMPER-
302 PM CDT FRI AUG 17 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEASTERN
MISSISSIPPI NEAR THE GOLDEN TRIANGLE.

.DAY ONE...TONIGHT AND SATURDAY

A FEW STRONG THUNDERSTORMS ARE POSSIBLE SATURDAY AFTERNOON AS A SLOW
MOVING COLD FRONT BEGINS TO EDGE SOUTH INTO THE AREA. ANY STRONG
STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 45 MPH...SMALL
HAIL...OCCASIONAL TO FREQUENT LIGHTNING STRIKES AND TORRENTIAL
DOWNPOURS.

.DAYS TWO THROUGH SEVEN...SATURDAY NIGHT THROUGH THURSDAY

EXPECT A FEW ROUNDS OF STRONG THUNDERSTORMS TO CONTINUE TO BE POSSIBLE
SATURDAY NIGHT THROUGH LATE SUNDAY AS THE SLOW MOVING COLD FRONT
VERY SLOWLY PUSHES PUSHES SOUTHEAST THROUGH THE AREA. 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...SPOTTY TORRENTIAL DOWNPOURS LASTING UP TO AN
HOUR WILL BE CAPABLE OF BRINGING A QUICK ONE TO TWO INCHES
OF RAIN...ESPECIALLY ON 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 SUNDAY.

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>028-034>036-
040>042-047-053-059-060-182015-
ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-
MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-BOLIVAR-
SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WASHINGTON-HUMPHREYS-
HOLMES-ISSAQUENA-SHARKEY-YAZOO-WARREN-CLAIBORNE-JEFFERSON-ADAMS-
302 PM CDT FRI AUG 17 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWESTERN
MISSISSIPPI...NORTHEASTERN LOUISIANA AND THE ARKLAMISS DELTA.

.DAY ONE...TONIGHT AND SATURDAY

A FEW STRONG THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON INTO THIS
EVENING...MAINLY ALONG AND NORTH OF THE HIGHWAY 82 CORRIDOR. ANY STRONG
STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 45 MPH...SMALL
HAIL...OCCASIONAL TO FREQUENT LIGHTNING STRIKES AND TORRENTIAL
DOWNPOURS.

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE SATURDAY AFTERNOON INTO
SATURDAY 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.

.DAYS TWO THROUGH SEVEN...SATURDAY NIGHT THROUGH THURSDAY

EXPECT A FEW ROUNDS OF STRONG THUNDERSTORMS TO CONTINUE TO BE POSSIBLE
SATURDAY NIGHT THROUGH LATE SUNDAY AS THE SLOW MOVING COLD FRONT
VERY SLOWLY PUSHES PUSHES SOUTHEAST THROUGH THE AREA. 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...SPOTTY TORRENTIAL DOWNPOURS LASTING UP TO AN
HOUR WILL BE CAPABLE OF BRINGING A QUICK ONE TO TWO INCHES
OF RAIN...ESPECIALLY ON 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 SATURDAY AFTERNOON THROUGH LATE SUNDAY.

MSZ043-048>052-054>058-061>066-072>074-182015-
MADISON MS-HINDS-RANKIN-SCOTT-NEWTON-LAUDERDALE-COPIAH-SIMPSON-
SMITH-JASPER-CLARKE-FRANKLIN MS-LINCOLN-LAWRENCE-JEFFERSON DAVIS-
COVINGTON-JONES-MARION-LAMAR-FORREST-
302 PM CDT FRI AUG 17 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHEASTERN MISSISSIPPI.

.DAY ONE...TONIGHT AND SATURDAY

A FEW STRONG THUNDERSTORMS ARE POSSIBLE LATE SATURDAY AFTERNOON INTO
SATURDAY EVENING AS A SLOW MOVING COLD FRONT BEGINS TO EDGE SOUTH
INTO THE AREA. ANY STRONG STORMS WILL BE CAPABLE OF PRODUCING WIND
GUSTS TO 45 MPH...SMALL HAIL...OCCASIONAL TO FREQUENT LIGHTNING
STRIKES AND TORRENTIAL DOWNPOURS.

.DAYS TWO THROUGH SEVEN...SATURDAY NIGHT THROUGH THURSDAY

EXPECT A FEW ROUNDS OF STRONG THUNDERSTORMS TO CONTINUE TO BE POSSIBLE
SATURDAY NIGHT THROUGH LATE SUNDAY AS THE SLOW MOVING COLD FRONT
VERY SLOWLY PUSHES PUSHES SOUTHEAST THROUGH THE AREA. 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...SPOTTY TORRENTIAL DOWNPOURS LASTING UP TO AN
HOUR WILL BE CAPABLE OF BRINGING A QUICK ONE TO TWO INCHES
OF RAIN...ESPECIALLY ON 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 SATURDAY NIGHT THROUGH SUNDAY.

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

50

In the hours before

Special weather statement, Aug 17, 7:25 PM CDT, 51 minutes before
MSZ041-180105-
SHARKEY MS-
725 PM CDT FRI AUG 17 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
725 PM CDT FRI AUG 17 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED OVER DELTA CITY AT 725 PM CDT...MOVING
SOUTH SOUTHWEST AT 10 MPH.

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

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 SHARKEY COUNTY SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3285 9096 3286 9094 3289 9094 3295 9091
      3306 9091 3310 9088 3310 9074 3305 9066
      3276 9085 3283 9097
TIME...MOT...LOC 0025Z 038DEG 11KT 3303 9081

19
Special weather statement, Aug 17, 7:58 PM CDT, 18 minutes before
MSZ044-180140-
LEAKE MS-
758 PM CDT FRI AUG 17 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
758 PM CDT FRI AUG 17 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED OVER THOMASTOWN AT 758 PM CDT...MOVING
EAST AT 15 MPH.

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

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 NORTHERN LEAKE COUNTY SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3269 8942 3279 8973 3293 8973 3293 8942
      3292 8933
TIME...MOT...LOC 0058Z 287DEG 12KT 3287 8966

19
Special weather statement, Aug 17, 8:16 PM CDT, 0 minutes before
MSZ042-180155-
YAZOO MS-
816 PM CDT FRI AUG 17 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
816 PM CDT FRI AUG 17 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED OVER MIDWAY AT 816 PM CDT...MOVING
EAST SOUTHEAST AT 20 MPH.

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

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 NORTHEASTERN YAZOO COUNTY SHOULD MONITOR THIS STORM
CLOSELY.

LAT...LON 3288 8996 3286 8998 3284 8999 3283 9002
      3279 9002 3277 9004 3284 9031 3298 9028
      3299 9027
TIME...MOT...LOC 0116Z 281DEG 18KT 3291 9019

19

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 7:25 PM CDTSpecial Weather StatementJANSharkey40 min
Aug 17, 7:58 PM CDTSpecial Weather StatementJANLeake42 min
Aug 17, 11:38 PM CDTSpecial Weather StatementJANBolivar, Sunflower57 min
Aug 18, 12:19 AM CDTSevere Thunderstorm WarningJANBolivar41 min
Aug 18, 1:08 AM CDTSpecial Weather StatementJANGrenada57 min
Aug 18, 2:33 AM CDTSpecial Weather StatementJANCarroll, Choctaw, Montgomery, Oktibbeha, Webster57 min
Aug 18, 3:26 AM CDTSpecial Weather StatementJANChoctaw, Clay, Lowndes, Noxubee, Oktibbeha, Webster and 1 more59 min
Aug 18, 4:36 AM CDTSpecial Weather StatementJANLowndes, Noxubee59 min
Aug 18, 7:08 AM CDTSpecial Weather StatementJANWinston32 min
Aug 18, 9:12 AM CDTSpecial Weather StatementJANBolivar28 min
Aug 18, 9:41 AM CDTSpecial Weather StatementJANBolivar29 min
Aug 18, 11:25 AM CDTSpecial Weather StatementJANHumphreys30 min
Aug 18, 11:41 AM CDTSevere Thunderstorm WarningJANHolmes, Humphreys49 min
Aug 18, 12:26 PM CDTSpecial Weather StatementJANAdams29 min
Aug 18, 12:48 PM CDTSpecial Weather StatementJANYazoo57 min
Aug 18, 12:53 PM CDTSpecial Weather StatementJANSharkey47 min
Aug 18, 1:01 PM CDTSpecial Weather StatementJANHolmes59 min
Aug 18, 1:03 PM CDTSevere Thunderstorm WarningJANYazoo28 min
Aug 18, 1:26 PM CDTSpecial Weather StatementJANLawrence39 min
Aug 18, 1:37 PM CDTSpecial Weather StatementJANAdams, Claiborne, Jefferson58 min
Aug 18, 1:50 PM CDTSpecial Weather StatementJANMadison20 min
Aug 18, 1:53 PM CDTSpecial Weather StatementJANSimpson32 min
Aug 18, 2:01 PM CDTSpecial Weather StatementJANJefferson Davis44 min
Aug 18, 2:02 PM CDTSpecial Weather StatementJANSimpson48 min
Aug 18, 2:15 PM CDTSpecial Weather StatementJANLawrence40 min
Aug 18, 2:22 PM CDTSpecial Weather StatementJANHinds58 min
Aug 18, 2:27 PM CDTSpecial Weather StatementJANNeshoba43 min
Aug 18, 3:01 PM CDTSpecial Weather StatementJANRankin59 min
Aug 18, 3:31 PM CDTSpecial Weather StatementJANCovington44 min
Aug 18, 3:44 PM CDTFlash Flood WarningJANRankin61 min
Aug 18, 4:20 PM CDTSpecial Weather StatementJANLauderdale, Newton60 min
Aug 18, 4:30 PM CDTSevere Thunderstorm WarningJANLauderdale45 min
Aug 18, 5:03 PM CDTSpecial Weather StatementJANClarke32 min
Aug 18, 5:19 PM CDTSpecial Weather StatementJANLauderdale31 min
Aug 18, 10:13 AM CDTSpecial Weather StatementJANMorehouse27 min
Aug 18, 10:43 AM CDTSpecial Weather StatementJANMorehouse27 min
Aug 18, 11:30 AM CDTSpecial Weather StatementJANRichland, West Carroll30 min
Aug 18, 12:01 PM CDTSpecial Weather StatementJANEast Carroll, Franklin, West Carroll29 min
Aug 18, 12:43 PM CDTSpecial Weather StatementJANMadison, Tensas62 min
Aug 17, 9:12 PM CDTSpecial Weather StatementJANChicot38 min

Nearby

Special Weather Statements in Mississippi, 2012Every 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.