Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Jackson, MS

May 21, 2012Warren County, Mississippi

NWS Jackson, MS issued this special weather statement at May 21, 2012, 4:52 PM CDT for Warren County, Mississippi. It was in force for 13 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: May 21, 2012, 4:52 PM CDT (21:52 UTC)
Expired: May 21, 2012, 5:05 PM CDT
In force: 13 min
Issued by: NWS Jackson, MS

County Warren County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 97 km from the middle of the area, began a volume at 21:55 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, 9.9 hours before the alert went out and 87 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: 518 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1663 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 14 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 May 21, 4:11 PM CDT, 41 minutes earlier.

Area forecast discussion, May 21, 4:11 PM CDT, 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
411 PM CDT MON MAY 21 2012

.DISCUSSION...

REMAINDER OF THE AFTERNOON INTO THE EVENING...THUNDERSTORMS HAVE
ERUPTED ACROSS MUCH OF THE ARKLAMISS AS EXPECTED WITH THE APPROACHING
SHORTWAVE TROUGH AND COLD FRONT. MOST ACTIVITY CONFINED TO AREAS
ALONG THE NATCHEZ TRACE PARKWAY WHERE MID LEVEL LAPSE RATES OF ~6.5
DEG C/KM AND SFC DEWPOINTS IN THE MID 60S ARE CONTRIBUTING TO MIXED
LAYER AROUND 2000 J/KG...BUT ADDITIONAL TSTMS ARE DEVELOPING UPSTREAM
OVER SOUTHEAST ARKANSAS.

DEEP SUB-CLOUD LAYER AND STEEP LOW LEVEL LAPSE RATES WILL ENHANCE
DEVELOPING COLD POOLS (AND ATTENDANT SVR WIND GUST RISK) WITH NW
FLOW ALOFT HELPING TO ACCELERATE THEM AS CLUSTERS OF CELLS ORGANIZE
INTO LINE SEGMENTS. HAIL AND STRONG TO SVR WIND GUSTS WILL ARE STILL
THE MAIN CONCERNS. DEPENDING ON HOW MUCH ACCELERATION TAKES PLACE...
THE RISK FOR STORMS WILL END QUICKLY THIS EVENING...ESPECIALLY THE
BOUNDARY LAYER STABILIZES WITH NIGHTTIME COOLING.

TONIGHT THROUGH TUESDAY NIGHT...GUIDANCE CONTINUES TO QUICKEN THE
PACE ON THE SHORTWAVE TROUGH PASSAGE AND A SUBSIDENT DRY AIRMASS TO
FOLLOW. SO LOOKS LIKE PRECIP WILL END TONIGHT WITH SURFACE HIGH
PRESSURE AND MUCH DRIER AIR MOVING IN FOR TUESDAY AND TUESDAY NIGHT
ACROSS THE ENTIRE ARKLAMISS. /EC/

WEDNESDAY THROUGH NEXT MONDAY...WITH HIGH PRESSURE AT THE SURFACE...
UPPER RIDGING WILL BUILD INTO AND STRENGTHEN ACROSS THE FORECAST AREA
DURING THE FORECAST PERIOD. ANY CHANCE FOR RAIN DURING THIS TIME LOOK
TO BE SLIM AND CONFINED TO THE LATE AFTERNOON HOURS. CONDITIONS WILL
ALSO WARM THROUGH THE PERIOD AS HIGHS IN THE UPPER 80S DURING MID-
WEEK...CLIMB INTO THE LOWER 90S HEADING INTO MEMORIAL DAY WEEKEND.
MEANWHILE...LOWS EACH NIGHT WILL ONLY FALL INTO THE MID AND UPPER
60S. /19/

&&

.AVIATION...TSRA XPCTD ACROSS THE REGION THRU THE REST OF THE AFTN
AND INTO THE EVENING. ISOLD SEVERE TSRA(60 MPH WINDS AND QUARTER
SIZE HAIL) WILL BE PSBL AS THIS ACTIVITY PASSES. VFR CONDS TO
PREVAIL FOR THE MOST PART BUT A TEMPORARY DROP TO IFR IN RAIN WILL
BE PSBL WITHIN TSRA. TSRA SHOULD DIMINISH BY 02Z WITH A GRADUAL
CLEARING TREND XPCTD INTO TONIGHT. VFR CONDS TO PREVAIL AT MOST
SITES AFTER 02Z...HOWEVER IFR CIG/VIS WILL BE PSBL EARLY TOMORROW
MORNING AT HBG. WINDS WILL GRADUALLY BECOME WRLY AND THEN NRLY TODAY
AS A COLD FRONT APPROACHES THE REGION FROM THE NORTH. /BK/

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       59  83  54  87 /  34   3   0   7
MERIDIAN      58  82  52  87 /  38   5   0   7
VICKSBURG     57  82  51  88 /  18   4   0   7
HATTIESBURG   61  86  55  89 /  36   4   5   5
NATCHEZ       61  82  56  86 /  28   3   0  11
GREENVILLE    59  79  54  86 /  10   4   0   7
GREENWOOD     57  79  51  85 /  10   3   0   6

&&

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

&&

EC/19/BK

Hazardous weather outlook, May 21, 2:49 PM CDT, 2 hours 3 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
249 PM CDT MON MAY 21 2012

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
222000-
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-
249 PM CDT MON MAY 21 2012

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

.DAY ONE...TONIGHT AND TUESDAY

A FEW STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS THE
ARKLAMISS INTO THE EVENING HOURS AHEAD OF A COLD FRONT THAT WILL MOVE
SOUTH ACROSS THE REGION TONIGHT. THE PRIMARY RISKS WILL BE DAMAGING
WIND GUSTS OF 50 TO 60 MPH AND QUARTER SIZE HAIL. THE STORMS WILL
GENERALLY MOVE TO THE SOUTH SOUTHEAST THROUGH THE AFTERNOON...WITH
MOST OF THE STRONG TO SEVERE ACTIVITY ENDING BETWEEN 8 AND 9 PM.

.DAYS TWO THROUGH SEVEN...TUESDAY NIGHT THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.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 UNTIL 8 OR 9 PM THIS EVENING.

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

BK

In the hours before

Special weather statement, May 21, 4:38 PM CDT, 14 minutes before

MSZ042-043-212210-
MADISON MS-YAZOO MS-
438 PM CDT MON MAY 21 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
438 PM CDT MON MAY 21 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING 40 TO 50 MPH WINDS WAS
LOCATED 3 MILES SOUTHEAST OF LITTLE YAZOO AT 438 PM CDT...MOVING
SOUTHEAST AT 15 MPH.

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 CENTRAL YAZOO AND WEST CENTRAL MADISON COUNTIES SHOULD
MONITOR THIS STORM CLOSELY.

LAT...LON 3267 9014 3253 9035 3269 9047 3280 9030
TIME...MOT...LOC 2138Z 321DEG 14KT 3268 9032

MRM

Special weather statement, May 21, 4:41 PM CDT, 11 minutes before

ARZ074-LAZ007-212200-
ASHLEY AR-MOREHOUSE LA-
441 PM CDT MON MAY 21 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
441 PM CDT MON MAY 21 2012

...STRONG STORM MOVING INTO SOUTHWEST ASHLEY COUNTY...

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL
AND 40 TO 50 MPH WINDS WAS LOCATED 8 MILES NORTHWEST OF WEST CROSSETT
AT 441 PM CDT...MOVING SOUTHEAST AT 15 MPH.

DANGEROUS CLOUD TO GROUND LIGHTNING IS ALSO LIKELY WITH THIS STORM.

PEOPLE IN SOUTHWESTERN ASHLEY COUNTY SHOULD MONITOR THIS STORM
CLOSELY.

LAT...LON 3321 9214 3322 9209 3324 9209 3327 9204
      3300 9183 3301 9207 3303 9212 3306 9212
      3308 9214 3311 9214 3313 9212 3315 9211
      3317 9214
TIME...MOT...LOC 2141Z 321DEG 14KT 3319 9212

EEC

Local storm report, May 21, 4:42 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
442 PM CDT MON MAY 21 2012

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

0440 PM     HAIL             3 E DERMOTT             33.53N 91.39W
05/21/2012  E1.75 INCH       CHICOT             AR   EMERGENCY MNGR

            PEA TO GOLF BALL SIZED HAIL NEAR DERMOTT. REPORTED BY
            EMERGENCY MANAGEMENT.

&&

Local storm report, May 21, 4:45 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
445 PM CDT MON MAY 21 2012

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

0409 PM     TSTM WND DMG     3 SSE BOLTON            32.31N 90.44W
05/21/2012                   HINDS              MS   LAW ENFORCEMENT

            MULTIPLE TREES DOWN BETWEEN BOLTON AND RAYMOND

&&

CME

Local storm report, May 21, 4:49 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
449 PM CDT MON MAY 21 2012

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

0445 PM     HAIL             2 WSW FLORENCE          32.14N 90.16W
05/21/2012  E1.00 INCH       RANKIN             MS   BROADCAST MEDIA

            ON WHITES ROAD

&&

GERARD

Special weather statement, May 21, 4:52 PM CDT, 0 minutes before

LAZ016-MSZ047-212205-
WARREN MS-MADISON LA-
452 PM CDT MON MAY 21 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
452 PM CDT MON MAY 21 2012

...STRONG STORM MOVING SOUTH ALONG MISSISSIPPI RIVER JUST WEST OF
VICKSBURG...

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL
AND 40 TO 50 MPH WINDS WAS LOCATED 5 MILES SOUTHEAST OF MANSFORD AT
452 PM CDT...MOVING SOUTHEAST AT 15 MPH AND MOVING JUST WEST OF
VICKSBURG.

DANGEROUS CLOUD TO GROUND LIGHTNING IS ALSO POSSIBLE WITH THIS STORM.

PEOPLE IN WESTERN WARREN COUNTY...AND EASTERN MADISON PARISH SHOULD
MONITOR THIS STORM CLOSELY.

LAT...LON 3226 9086 3219 9107 3242 9121 3254 9105
TIME...MOT...LOC 2152Z 319DEG 14KT 3241 9105

EEC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 3:31 AM CDT	Special Weather Statement	JAN	Carroll	54 min
May 21, 6:19 AM CDT	Special Weather Statement	JAN	Sharkey	31 min
May 21, 9:13 AM CDT	Special Weather Statement	JAN	Attala	32 min
May 21, 2:12 PM CDT	Special Weather Statement	JAN	Jefferson	28 min
May 21, 2:17 PM CDT	Special Weather Statement	JAN	Madison	28 min
May 21, 2:33 PM CDT	Flash Flood Warning	JAN	Jefferson	117 min
May 21, 2:40 PM CDT	Severe Thunderstorm Warning	JAN	Yazoo	23 min
May 21, 2:54 PM CDT	Severe Thunderstorm Warning	JAN	Leflore	26 min
May 21, 3:15 PM CDT	Special Weather Statement	JAN	Claiborne	30 min
May 21, 3:17 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Jefferson	43 min
May 21, 3:18 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Simpson	42 min
May 21, 3:18 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin	27 min
May 21, 3:31 PM CDT	Severe Thunderstorm Warning	JAN	Webster	44 min
May 21, 3:33 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Warren	27 min
May 21, 3:34 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Issaquena, Madison, Warren	41 min
May 21, 3:50 PM CDT	Severe Thunderstorm Warning	JAN	Warren	40 min
May 21, 3:53 PM CDT	Severe Thunderstorm Warning	JAN	Yazoo	12 min
May 21, 3:55 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Montgomery, Webster	50 min
May 21, 3:57 PM CDT	Special Weather Statement	JAN	Claiborne	28 min
May 21, 4:09 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Rankin	51 min
May 21, 4:23 PM CDT	Severe Thunderstorm Warning	JAN	Adams	37 min
May 21, 4:26 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Warren	25 min
May 21, 4:38 PM CDT	Special Weather Statement	JAN	Yazoo	32 min
May 21, 4:39 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Winston	39 min
May 21, 4:44 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Leake, Neshoba, Winston	46 min
May 21, 4:50 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Rankin, Simpson	40 min
May 21, 5:04 PM CDT	Severe Thunderstorm Warning	JAN	Warren	26 min
May 21, 5:17 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba	28 min
May 21, 5:21 PM CDT	Special Weather Statement	JAN	Jefferson Davis	39 min
May 21, 5:24 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis	15 min
May 21, 5:27 PM CDT	Special Weather Statement	JAN	Bolivar	18 min
May 21, 5:28 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Leake, Neshoba	32 min
May 21, 5:42 PM CDT	Special Weather Statement	JAN	Jefferson Davis	28 min
May 21, 5:48 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis	42 min
May 21, 5:51 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba	39 min
May 21, 5:56 PM CDT	Special Weather Statement	JAN	Jasper	29 min
May 21, 5:59 PM CDT	Special Weather Statement	JAN	Lauderdale	21 min
May 21, 6:00 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Neshoba	45 min
May 21, 6:03 PM CDT	Special Weather Statement	JAN	Humphreys	22 min
May 21, 6:15 PM CDT	Special Weather Statement	JAN	Madison	20 min
May 21, 6:21 PM CDT	Special Weather Statement	JAN	Claiborne	29 min
May 21, 6:27 PM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Yazoo	33 min
May 21, 6:30 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Yazoo	30 min
May 21, 6:46 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale, Newton	29 min
May 21, 4:01 PM CDT	Special Weather Statement	JAN	Richland	29 min
May 21, 4:50 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse	25 min
May 21, 4:52 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Franklin	38 min
May 21, 5:14 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse	31 min
May 21, 5:31 PM CDT	Special Weather Statement	JAN	Franklin	29 min
May 21, 5:34 PM CDT	Special Weather Statement	JAN	Madison	31 min
May 21, 5:55 PM CDT	Special Weather Statement	JAN	Concordia	30 min
May 21, 5:57 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Concordia	12 min
May 21, 6:13 PM CDT	Special Weather Statement	JAN	Concordia	32 min
May 21, 6:37 PM CDT	Special Weather Statement	JAN	Richland	33 min
May 21, 6:44 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse, Richland, West Carroll	46 min
May 21, 6:55 PM CDT	Special Weather Statement	JAN	Avoyelles	30 min
May 21, 4:31 PM CDT	Severe Thunderstorm Warning	JAN	Chicot	25 min
May 21, 4:41 PM CDT	Special Weather Statement	JAN	Ashley	19 min
May 21, 5:54 PM CDT	Special Weather Statement	JAN	Ashley	21 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.