Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Jackson, MS

April 5, 2012Yazoo County, Mississippi

NWS Jackson, MS issued this special weather statement at Apr 5, 2012, 4:44 AM CDT for Yazoo County, Mississippi. It was in force for 31 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: Apr 5, 2012, 4:44 AM CDT (09:44 UTC)
Expired: Apr 5, 2012, 5:15 AM CDT
In force: 31 min
Issued by: NWS Jackson, MS

County Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 78 km from the middle of the area, began a volume at 09:44 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 00:00Z, 9.7 hours before the alert went out and 70 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: 140 J/kg
Mixed-layer CIN: -159 J/kg
Mixed-layer LCL: 1625 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 65 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 Apr 5, 4:23 AM CDT, 21 minutes earlier.

Area forecast discussion, Apr 5, 4:23 AM CDT, 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
423 AM CDT THU APR 5 2012

.DISCUSSION...

TODAY...

ADDITIONAL SEVERE THUNDERSTORMS ARE POSSIBLE AS WE GO THROUGH MUCH OF
TODAY. EARLY THIS MORNING...THE SLOW-MOVING UPPER LOW HAS PICKED UP
SPEED AND THE CENTER IS CURRENTLY CROSSING THE OZARKS. THE BEST
CONVECTIVE REGIME EXISTS SOUTHEAST OF THE LOW CENTER AND INCLUDES
PORTIONS OF THE ARKLAMISS ALONG AND WEST OF THE MS RIVER. THE AIRMASS
IN THIS REGION IS CHARACTERIZED BY MOST UNSTABLE CAPE APPROACHING
2000 J/KG...STEEP MID LEVEL LAPSE RATES WITH TT VALUES IN THE MID
50S...EFFECTIVE DEEP LAYER SHEAR ~50 KTS...AND RELATIVELY WEAK LOW
LEVEL SHEAR/HELICITY. A BROKEN LINE OF STORMS AND A FEW OTHER
DISCRETE CELLS MANAGED TO DEVELOP IN THIS ENVIRONMENT AS STRONGER
HEIGHT FALLS/ASCENT APPROACHED THE ARKLAMISS AND THEY HAVE PRODUCED
LARGE HAIL.

EXPECT THE BETTER CONVECTIVE REGIME DESCRIBED ABOVE TO SHIFT EAST
WITH TIME...COINCIDING WITH DIURNAL HEATING WHICH WILL EVENTUALLY
MAXIMIZE INSTABILITY OVER ERN MS. ASCENT ASSOCIATED WITH ADDITIONAL
LOBES OF VORTICITY ROTATING AROUND THE UPPER LOW WILL COMBINE WITH
DAYTIME HEATING...POTENTIALLY RESULTING IN ADDITIONAL BROKEN TSTM
LINE SEGMENTS AS WE GO INTO THE LATE MORNING AND
AFTERNOON...ESPECIALLY FOR AREAS EAST OF THE I-55 CORRIDOR. WHILE A
COUPLE OF TORNADOES CANNOT BE RULED OUT...VEERED AND RELATIVELY WEAK
LOW LEVEL FLOW WILL MITIGATE THE OVERALL TORNADO RISK AND HAIL/WIND
GUSTS WILL CONTINUE TO BE THE PRIMARY SEVERE WEATHER RISKS. EXPECT
THE RISK FOR STORMS TO END QUICKLY AND SHIFT EAST OF THE ARKLAMISS
AS THE EVENING APPROACHES.

AS WE GO FROM TONIGHT THROUGH FRIDAY NIGHT...AN APPROACHING
SHORTWAVE RIDGE AND ASSOCIATED HEIGHT RISES WILL BRING A RETURN TO
DRY AND QUIET CONDITIONS WITH SEASONABLY MILD TEMPERATURES FOR THE
ARKLAMISS. /EC/

SATURDAY THROUGH NEXT THURSDAY...

LOOKS LIKE IT WILL BE RELATIVELY QUIET IN THE EXTENDED PERIOD WITH A
VERY NICE WEEKEND ON TAP FOR THE ARKLAMISS. HIGH PRESSURE RIDGING AT
THE SURFACE AND ALOFT WILL BUILD OVER THE AREA ON SATURDAY AND
CONTINUE INTO SATURDAY NIGHT. THE GFS DRAGS A BOUNDARY ACROSS THE
STATE ON SUNDAY...AND THIS MAY KICK OFF SOME ISOLATED THUNDERSTORMS
ACTIVITY SUNDAY AFTERNOON. SURFACE HIGH PRESSURE RIDGING ALONG WITH
NORTHWEST FLOW WILL DEVELOP OVER THE AREA SUNDAY NIGHT INTO MONDAY
AND THIS PATTERN WILL CONTINUE INTO TUESDAY WITH ANOTHER WEAK/DRY
COLD FRONT MOVING ACROSS THE STATE TUESDAY MORNING. THINGS BEGIN TO
CHANGE ON WEDNESDAY AS THE EAST COAST TROUGH SHIFTS TO THE EAST AND
WEAK UPPER RIDGING MOVES OVER THE AREA.

THE GFS/ECMWF DIVERGE ON THERE SOLUTIONS AS WE GET INTO MID-LATE
WEEK...BUT IT LOOKS LIKE IT MAY BECOME ACTIVE DURING THIS PERIOD WITH
THE POTENTIAL FOR SOME STRONG-SEVERE STORMS ON THURSDAY. STUCK PRETTY
CLOSE TO GUIDANCE TEMPS/POPS THROUGH THE PERIOD AS THE MODELS SEEM
TO BE ON TRACK./15/

&&

.AVIATION...SCATTERED THUNDERSTORMS CONTAINING LARGE HAIL WILL POSE A
BIG AVIATION HAZARD TODAY IN THE FORECAST AREA...BUT EXPECT STORMS TO
END FROM WEST TO EAST LATER THIS AFTERNOON WITH VFR CONDITIONS THEN
PREVAILING THROUGH THE WEEKEND. /EC/

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       78  53  73  50 /  41   4   0   0
MERIDIAN      81  53  74  48 /  50   9   0   0
VICKSBURG     79  52  73  48 /  33   3   0   0
HATTIESBURG   83  54  78  52 /  40   7   0   0
NATCHEZ       78  54  74  51 /  21   3   0   0
GREENVILLE    75  53  70  48 /  42   4   0   0
GREENWOOD     78  52  71  47 /  51   6   0   0

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...NONE.
LA...NONE.
AR...NONE.

&&

EC/15/

Hazardous weather outlook, Apr 4, 1:55 PM CDT, 14 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
155 PM CDT WED APR 4 2012

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
051900-
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-
155 PM CDT WED APR 4 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHEAST
ARKANSAS...NORTHEAST LOUISIANA AND CENTRAL MISSISSIPPI.

.DAY ONE...TONIGHT AND THURSDAY
THERE WILL BE A RISK FOR A FEW STRONG TO SEVERE THUNDERSTORMS
FOR LATE TONIGHT INTO THURSDAY. A COMPLEX OF STORMS IS EXPECTED TO
AFFECT THE FAR WESTERN AREAS GENERALLY ALONG AND WEST OF THE
MISSISSIPPI RIVER LATE TONIGHT THEN CROSS THE REST OF THE REGION ON
THURSDAY. THIS WILL BE DUE TO THE COMBINATION OF AN AREA OF LOW
PRESSURE IN THE UPPER ATMOSPHERE AND A FRONT. THE PRIMARY RISKS
WILL BE DAMAGING WINDS TO 60 MPH...QUARTER SIZED HAIL AND A TORNADO
OR TWO CAN NOT BE RULED OUT. THE STORMS SHOULD END BY THURSDAY
EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY NIGHT THROUGH TUESDAY

.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 ON THURSDAY.

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

17

In the hours before

Special weather statement, Apr 5, 4:04 AM CDT, 40 minutes before

LAZ009-MSZ040-041-050935-
SHARKEY MS-ISSAQUENA MS-EAST CARROLL LA-
404 AM CDT THU APR 5 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
404 AM CDT THU APR 5 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED OVER TRANSYLVANIA AT 404 AM CDT...
MOVING EAST AT 30 MPH.

HEAVY RAIN IS ALSO POSSIBLE WITH THIS STORM.

PEOPLE IN SOUTHERN ISSAQUENA AND SOUTHWESTERN SHARKEY COUNTIES...AND
CENTRAL EAST CARROLL PARISH SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3283 9080 3261 9078 3260 9129 3278 9131
TIME...MOT...LOC 0904Z 266DEG 27KT 3270 9119

JA

Local storm report, Apr 5, 4:08 AM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
408 AM CDT THU APR 05 2012

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

0150 AM     HAIL             CROSSETT                33.13N 91.97W
04/05/2012  E0.75 INCH       ASHLEY             AR   PUBLIC

            PEA TO DIME SIZED HAIL

0243 AM     HAIL             WAYSIDE                 33.27N 91.03W
04/05/2012  E1.75 INCH       WASHINGTON         MS   PUBLIC

&&

DL

Special weather statement, Apr 5, 4:12 AM CDT, 32 minutes before

ARZ074-051015-
ASHLEY AR-
412 AM CDT THU APR 5 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
412 AM CDT THU APR 5 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED 10 MILES NORTHWEST OF WEST CROSSETT AT
413 AM CDT...MOVING EAST AT 30 MPH.

PEOPLE IN NORTHWESTERN ASHLEY COUNTY SHOULD MONITOR THIS STORM
CLOSELY.

LAT...LON 3322 9209 3323 9210 3328 9204 3331 9198
      3334 9200 3337 9197 3339 9200 3341 9199
      3340 9169 3315 9166 3314 9212 3315 9211
      3316 9214 3319 9214
TIME...MOT...LOC 0913Z 263DEG 26KT 3323 9215

JA

Local storm report, Apr 5, 4:15 AM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
415 AM CDT THU APR 05 2012

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

0305 AM     HAIL             ARCOLA                  33.27N 90.88W
04/05/2012  E1.75 INCH       WASHINGTON         MS   LAW ENFORCEMENT

            LARGE HAIL SHATTERED THE WINDSHIELD OF A VEHICLE

&&

DL

Special weather statement, Apr 5, 4:20 AM CDT, 24 minutes before

LAZ009-MSZ040-041-050950-
SHARKEY MS-ISSAQUENA MS-EAST CARROLL LA-
420 AM CDT THU APR 5 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
420 AM CDT THU APR 5 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL WAS
LOCATED 4 MILES SOUTHWEST OF FITLER AT 421 AM CDT...MOVING EAST AT 30
MPH.

PEOPLE IN SOUTHERN ISSAQUENA AND SOUTHWESTERN SHARKEY COUNTIES...AND
EAST CENTRAL EAST CARROLL PARISH SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3279 9083 3260 9085 3261 9116 3279 9114
TIME...MOT...LOC 0921Z 275DEG 27KT 3269 9103

JA

Special weather statement, Apr 5, 4:44 AM CDT, 0 minutes before

MSZ042-051015-
YAZOO MS-
444 AM CDT THU APR 5 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
444 AM CDT THU APR 5 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL
AND 40 TO 50 MPH WINDS WAS LOCATED 5 MILES NORTH OF TINSLEY AT 444 AM
CDT...MOVING NORTHEAST AT 30 MPH. THIS STOMR WILL MOVE OVER YAZOO
CITY OVER THE NEXT 10 TO 15 MINTUES.

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

PEOPLE IN NORTHERN YAZOO COUNTY SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3300 9032 3300 9030 3298 9027 3295 9017
      3292 9010 3288 9007 3269 9048 3284 9060
      3301 9032
TIME...MOT...LOC 0944Z 237DEG 23KT 3281 9045

JA

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 2:17 AM CDT	Special Weather Statement	JAN	Washington	28 min
Apr 5, 2:37 AM CDT	Severe Thunderstorm Warning	JAN	Sunflower, Washington	53 min
Apr 5, 3:26 AM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Leflore, Sunflower, Washington	64 min
Apr 5, 3:34 AM CDT	Special Weather Statement	JAN	Sharkey	31 min
Apr 5, 3:55 AM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Sharkey	50 min
Apr 5, 4:04 AM CDT	Special Weather Statement	JAN	Issaquena	31 min
Apr 5, 4:20 AM CDT	Special Weather Statement	JAN	Issaquena	30 min
Apr 5, 4:59 AM CDT	Severe Thunderstorm Warning	JAN	Yazoo	46 min
Apr 5, 5:30 AM CDT	Severe Thunderstorm Warning	JAN	Washington	60 min
Apr 5, 5:34 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena	56 min
Apr 5, 6:15 AM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Sunflower, Washington	30 min
Apr 5, 6:25 AM CDT	Special Weather Statement	JAN	Sharkey	30 min
Apr 5, 6:35 AM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Yazoo	55 min
Apr 5, 6:41 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Warren, Yazoo	64 min
Apr 5, 6:52 AM CDT	Special Weather Statement	JAN	Holmes	28 min
Apr 5, 7:05 AM CDT	Special Weather Statement	JAN	Holmes	30 min
Apr 5, 7:08 AM CDT	Severe Thunderstorm Warning	JAN	Carroll, Holmes, Yazoo	67 min
Apr 5, 7:12 AM CDT	Tornado Warning	JAN	Madison, Yazoo	33 min
Apr 5, 7:20 AM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison	40 min
Apr 5, 7:29 AM CDT	Tornado Warning	JAN	Madison, Yazoo	19 min
Apr 5, 7:38 AM CDT	Severe Thunderstorm Warning	JAN	Madison, Rankin, Yazoo	46 min
Apr 5, 7:51 AM CDT	Severe Thunderstorm Warning	JAN	Attala, Holmes, Leake, Madison	39 min
Apr 5, 8:00 AM CDT	Severe Thunderstorm Warning	JAN	Leake, Scott	48 min
Apr 5, 8:08 AM CDT	Special Weather Statement	JAN	Hinds, Rankin	32 min
Apr 5, 8:14 AM CDT	Special Weather Statement	JAN	Issaquena	41 min
Apr 5, 8:27 AM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Winston	48 min
Apr 5, 8:46 AM CDT	Special Weather Statement	JAN	Simpson	29 min
Apr 5, 9:03 AM CDT	Severe Thunderstorm Warning	JAN	Kemper, Noxubee	57 min
Apr 5, 9:07 AM CDT	Special Weather Statement	JAN	Smith	28 min
Apr 5, 9:13 AM CDT	Special Weather Statement	JAN	Simpson	32 min
Apr 5, 9:36 AM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	54 min
Apr 5, 9:46 AM CDT	Special Weather Statement	JAN	Simpson	29 min
Apr 5, 10:19 AM CDT	Severe Thunderstorm Warning	JAN	Clarke	41 min
Apr 5, 10:37 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Smith	38 min
Apr 5, 10:51 AM CDT	Severe Thunderstorm Warning	JAN	Jones	39 min
Apr 5, 12:04 PM CDT	Special Weather Statement	JAN	Jones	31 min
Apr 5, 1:08 PM CDT	Special Weather Statement	JAN	Forrest, Lamar	47 min
Apr 5, 1:53 PM CDT	Special Weather Statement	JAN	Lamar	32 min
Apr 5, 2:26 PM CDT	Special Weather Statement	JAN	Grenada	44 min
Apr 5, 3:01 PM CDT	Special Weather Statement	JAN	Grenada	29 min
Apr 5, 3:16 PM CDT	Special Weather Statement	JAN	Clay	29 min
Apr 5, 3:51 PM CDT	Special Weather Statement	JAN	Clay	59 min
Apr 5, 2:25 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse	50 min
Apr 5, 2:58 AM CDT	Special Weather Statement	JAN	West Carroll	32 min
Apr 5, 3:06 AM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Richland, West Carroll	54 min
Apr 5, 3:09 AM CDT	Special Weather Statement	JAN	Richland	31 min
Apr 5, 4:47 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse	58 min
Apr 5, 5:17 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse	42 min
Apr 5, 5:49 AM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Madison, Richland, West Carroll	56 min
Apr 5, 1:08 AM CDT	Special Weather Statement	JAN	Ashley	32 min
Apr 5, 1:29 AM CDT	Special Weather Statement	JAN	Ashley	31 min
Apr 5, 2:02 AM CDT	Special Weather Statement	JAN	Chicot	28 min
Apr 5, 4:12 AM CDT	Special Weather Statement	JAN	Ashley	63 min
Apr 5, 4:23 AM CDT	Severe Thunderstorm Warning	JAN	Ashley	52 min
Apr 5, 5:10 AM CDT	Severe Thunderstorm Warning	JAN	Chicot	50 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.