Alert archive / Louisiana / Special Weather Statements in 2012

Special Weather Statement, NWS Jackson, MS

April 10, 2012Richland Parish, Louisiana

NWS Jackson, MS issued this special weather statement at Apr 10, 2012, 9:15 PM CDT for Richland Parish, Louisiana. It was in force for 45 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 10, 2012, 9:15 PM CDT (02:15 UTC)
Expired
Apr 10, 2012, 10:00 PM CDT
In force
45 min
Issued by
NWS Jackson, MS

County Richland Parish, LA

The radar

The Jackson/Brandon,MS radar (KDGX), 146 km from the middle of the area, began a volume at 02:19 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, 2.3 hours before the alert went out and 137 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, Jackson, MS at 00:00Z on 2012-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 52 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, Jackson, MS at 00:00Z on 2012-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.193958Sfc1 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
52 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1752 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
111 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 10, 3:37 PM CDT, 5 hours 38 minutes earlier.

Area forecast discussion, Apr 10, 3:37 PM CDT, 5 hours 38 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
337 PM CDT TUE APR 10 2012

.DISCUSSION...TONIGHT THROUGH WEDNESDAY NIGHT...AS EXPECTED SOME
SHOWERS AND STORMS HAVE BEEN POPPING UP ACROSS MY WEST AND NORTH
THIS AFTERNOON.  WITH THE COLD FRONT JUST NOW BEGINNING TO IMPEDE
UPON THE NORTHERN HALF OF THE CWA...THIS WILL LIKELY CONTINUE
TO BE THE TREND FOR THE REMAINDER OF THE AFTERNOON AND INTO THE
EVENING HOURS.  A FEW STORMS COULD BE ON THE STRONG SIDE LATE THIS
AFTERNOON INTO THE EVENING...AND CAPABLE OF PRODUCING 40-50 MPH
WINDS AND HAIL.

SOME MODELS...HIGH-RES AND GLOBAL...CONTINUE TO WANT TO DEVELOP
ACTIVITY WELL TO MY NORTHWEST AND RACE IT ACROSS THE CWA ALONG THE
FRONT DURING THE OVERNIGHT HOURS.  I'LL RAISE POPS A BIT IN MY WEST
TONIGHT NOT IGNORING THE POTENTIAL THAT A "SURPRISE" EMBEDDED IN
NORTHWEST FLOW COULD INDEED HAPPEN.  ALTHOUGH I'M CURRENTLY NOT
SEEING ANY WAVE/DISTURBANCE UPSTREAM TO REALLY SET OFF ANY COMPLEX
OF CONVECTION...CONSIDERING WE'RE ON THE WESTERN PERIPHERY OF A
BROAD UPPER TROUGH...THE FRONT DROPPING THROUGH...AND STRONG
NORTHWEST FLOW ALOFT OVER THE REGION...ATTENTION WILL HAVE TO BE
PAID UPSTREAM TONIGHT FOR ANY SUCH ACTIVITY DEVELOPING AND AFFECTING
THE FORECAST AREA.  WITH THAT SAID THOUGH...SIMPLY WITH THE FRONT
PUSHING THROUGH...I'LL NOT RULE OUT AT A MINIMUM AN ISOLATED SHOWER
OR STORM OVERNIGHT...AGAIN MAINLY IN THE WEST.

HIGH PRESSURE WILL IMMEDIATELY BUILD SOUTH AND INTO THE FORECAST
BEHIND THE FRONT THIS EVENING INTO WEDNESDAY.  LOOK FOR COOLER AND
NOTICEABLY DRIER CONDITIONS DURING THE DAY AND NIGHT WEDNESDAY.
HIGHS WEDNESDAY AFTERNOON WILL TOP OUT FROM AROUND 70 ALONG THE
HIGHWAY 82 CORRIDOR TO THE UPPER 70S IN THE SOUTH ALONG THE HIGHWAY
84 CORRIDOR.  MEANWHILE LOWS WEDNESDAY NIGHT WILL BE CHILLY AS THEY
GENERALLY RANGE FROM THE LOWER 40S...ALTHOUGH SOME RURAL SPOTS COULD
DIP INTO THE UPPER 30S...ACROSS EAST MISSISSIPPI...TO THE MIDDLE 50S
ACROSS NORTHEAST LOUISIANA. /19/

THURSDAY THROUGH TUESDAY...EXTENDED MODELS AND ENSEMBLES HAVE COME
INTO A GENERAL AGREEMENT ON THE GENERAL PATTERN FOR THE PERIOD. THERE
ARE SOME DIFFERENCES IN MODELS AND ENSEMBLES AS WE GO INTO TUESDAY OF
NEXT WEEK. AS WE GO INTO THURSDAY UPPER RIDGING WILL DEVELOP OVER THE
REGION FROM THE SOUTHERN PLAINS. THIS WILL PROVIDE SOME MODERATION IN
HIGHS AND LOWS FROM THE WEST. LATEST GUIDANCE ON THE GFS TRIES TO
HOLD OFF ANY RAIN CHANCES UNTIL FRIDAY NIGHT IN THE NORTHWEST DELTA
REGION...WHILE THE EURO GIVES SOME VERY LIGHT QPF FOR THURSDAY INTO
FRIDAY. OPTED TO GO WITH THE DRYER GFS UNTIL FRIDAY NIGHT. FOR THE
WEEKEND THE EASTERN PACIFIC TROUGH WILL DIG INTO THE SOUTHWEST CONUS.
THIS WILL PROVIDE GOOD SOUTHWEST FLOW ALOFT OVER THE REGION. THERE
WILL BE ENOUGH INSTABILITY AND PRECIP WATER FOR LOW END CHANCES OF
CONVECTION DURING THIS TIME. FOR EARLY NEXT WEEK OUR CHANCES OF RAIN
WILL INCREASE SOME AS PRECIPITABLE WATER INCREASES ON MONDAY. FOR
TUESDAY THE UPPER TROUGH WILL APPROACH THE ARKLAMISS REGION. THIS
WILL PROVIDE SOME INCREASE IN SHEAR...UPPER DIVERGENCE...A COLD FRONT
AND SOME JET DYNAMICS FOR CONCERN FOR SOME STRONG POSSIBLY SEVERE
STORMS ON TUESDAY. IT IS JUST OUTSIDE OF THE HWO INFLUENCE...WILL SEE
IF MODELS SHOWS SOME CONSISTENCY IN FUTURE RUNS. HALF OF THE
ENSEMBLES PLACE A CLOSED LOW AROUND THE SOUTHERN PLAINS WITH THE
UPPER TROUGH...WHILE OTHER MODELS HAD AN OPEN TROUGH EXTENDING FROM
THE UPPER MS VALLY TO THE SOUTHERN PLAINS. AS FAR AS TEMPS ARE
CONCERNED WENT WITH A BLEND OF MEX, GMOS AND ENSEMBLE GUIDANCE. ON
POPS WENT WITH A BLEND OF MEX AND MEN ENSEMBLE GUIDANCE. /17/

&&

.AVIATION...VFR BROKEN CLOUDS 4-6K FT AND ABOVE WILL BE WIDESPREAD
THROUGH THIS EVENING AND TONIGHT. ISOLATED SHRA AND TSRA WILL BE
MOVING SEWD AT 15-25 MPH ALONG AND AHEAD OF A COLD FRONT THAT HAS
REACHED A CLEVELAND TO GRENADA TO ABERDEEN LINE. A FEW STRONG TSRA
ARE ALSO POSSIBLE MAINLY ALONG AND W OF THE MS RIVER BEFORE 01Z THIS
EVENING. THAT FRONT WILL SLOWLY DROP SWD TO NEAR THE I-20 CORRIDOR
03-05Z TONIGHT PUSHING INTO OUR S PORTIONS ALONG HIGHWAY 84 LATE
OVERNIGHT ABOUT 10-13Z. NLY WINDS PICK UP 11-16KTS JUST BEHIND THE
FRONT AND BECOME WIDESPREAD EARLY ON WEDNESDAY...NLY GUSTS COULD
REACH 20KTS AT MIDDAY WEDNESDAY. SKIES SHOULD CLEAR OFF COMPLETELY
WEDNESDAY AFTERNOON. /40/

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       52  73  45  76 /  10   4   1   6
MERIDIAN      48  74  39  75 /   9   5   2   2
VICKSBURG     52  75  47  77 /  15   4   1  11
HATTIESBURG   58  78  47  79 /   9   5   4   3
NATCHEZ       56  76  50  75 /  15  13   7  14
GREENVILLE    50  71  45  72 /  15   5   1  12
GREENWOOD     47  70  41  73 /  14   5   1   6

&&

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

19/40
Hazardous weather outlook, Apr 10, 1:21 PM CDT, 7 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
121 PM CDT TUE APR 10 2012

ARZ074-075-LAZ007>009-015-016-023>026-MSZ040-047-053-059>061-
111830-
ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-
MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-ISSAQUENA-
WARREN-CLAIBORNE-JEFFERSON-ADAMS-FRANKLIN MS-
121 PM CDT TUE APR 10 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ARKANSAS...
NORTHEAST LOUISIANA AND SOUTHWEST PORTIONS OF MISSISSIPPI.

.DAY ONE...TONIGHT AND WEDNESDAY

A FEW STRONG STORMS WILL BE POSSIBLE THROUGH EARLY EVENING WITH THE
POTENTIAL FOR GUSTY WINDS OF 50 MPH AND HAIL UP TO THE SIZE OF
NICKELS. A COLD FRONT MOVING THROUGH THE DELTA REGION THIS AFTERNOON
WILL TRACK SLOWLY SOUTHWARD TONIGHT...EXITING THE REGION WEDNESDAY.
STRONG THUNDERSTORMS MAY DEVELOP IN THE VICINITY OF THE FRONT MAINLY
SOUTHWEST OF A LAKE VILLAGE ARKANSAS TO VICKSBURG TO MEADVILLE
MISSISSIPPI LINE BEFORE 10 PM.

.DAYS TWO THROUGH SEVEN...WEDNESDAY NIGHT THROUGH MONDAY

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...SHOULD NOT BE NEEDED THROUGH MONDAY.

MSZ018-019-025>039-041>046-048>052-054>058-062>066-072>074-111830-
BOLIVAR-SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-
LOWNDES-CHOCTAW-OKTIBBEHA-WASHINGTON-HUMPHREYS-HOLMES-ATTALA-
WINSTON-NOXUBEE-SHARKEY-YAZOO-MADISON MS-LEAKE-NESHOBA-KEMPER-
HINDS-RANKIN-SCOTT-NEWTON-LAUDERDALE-COPIAH-SIMPSON-SMITH-JASPER-
CLARKE-LINCOLN-LAWRENCE-JEFFERSON DAVIS-COVINGTON-JONES-MARION-
LAMAR-FORREST-
121 PM CDT TUE APR 10 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MOST OF CENTRAL AND EAST
MISSISSIPPI.

.DAY ONE...TONIGHT AND WEDNESDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY NIGHT THROUGH MONDAY

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...IS NOT EXPECTED THROUGH MONDAY.

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

40

In the hours before

Local storm report, Apr 10, 6:47 PM CDT, 2 hours 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
647 PM CDT TUE APR 10 2012

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

0635 PM     HAIL             2 SE MADISON            32.43N 90.09W
04/10/2012  E0.50 INCH       MADISON            MS   PUBLIC

&&

DL
Local storm report, Apr 10, 7:12 PM CDT, 2 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
712 PM CDT TUE APR 10 2012

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

0630 PM     HAIL             1 ENE MADISON           32.46N 90.09W
04/10/2012  E0.88 INCH       MADISON            MS   PUBLIC

            REPORTED ALONG RICE ROAD

&&

DL
Special weather statement, Apr 10, 7:58 PM CDT, 1 hour 17 minutes before
LAZ007-015-110130-
RICHLAND LA-MOREHOUSE LA-
758 PM CDT TUE APR 10 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
758 PM CDT TUE APR 10 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED 12 MILES NORTHWEST OF START AT 758 PM
CDT...MOVING SOUTHEAST AT 15 MPH.

VERY HEAVY RAIN IS ALSO POSSIBLE WITH THIS STORM.

PEOPLE IN SOUTHWESTERN MOREHOUSE AND NORTH CENTRAL RICHLAND PARISHES
SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3273 9203 3261 9166 3241 9177 3248 9194
      3252 9191 3259 9194 3263 9193 3264 9193
      3265 9192 3268 9197 3270 9198 3269 9204
TIME...MOT...LOC 0058Z 294DEG 15KT 3261 9197

JA
Special weather statement, Apr 10, 8:17 PM CDT, 58 minutes before
LAZ007-015-110150-
RICHLAND LA-MOREHOUSE LA-
817 PM CDT TUE APR 10 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
817 PM CDT TUE APR 10 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL
AND 40 TO 50 MPH WINDS WAS LOCATED 7 MILES NORTHWEST OF START AT 818
PM CDT...MOVING SOUTHEAST AT 10 MPH.

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

PEOPLE IN SOUTH CENTRAL MOREHOUSE AND CENTRAL RICHLAND PARISHES
SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3269 9194 3257 9163 3237 9175 3248 9195
      3252 9191 3259 9194 3263 9193 3264 9193
      3265 9192 3267 9196
TIME...MOT...LOC 0118Z 298DEG 11KT 3256 9190

EEC
Local storm report, Apr 10, 9:10 PM CDT, 5 minutes before
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Special weather statement, Apr 10, 9:15 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 2:31 AM CDTSpecial Weather StatementJANSharkey, Yazoo74 min
Apr 10, 7:58 PM CDTSpecial Weather StatementJANRichland32 min
Apr 10, 8:17 PM CDTSpecial Weather StatementJANRichland33 min
Apr 10, 8:35 PM CDTSevere Thunderstorm WarningJANMorehouse, Richland40 min
Apr 10, 9:58 PM CDTSevere Thunderstorm WarningJANMorehouse47 min
Apr 10, 11:01 PM CDTSpecial Weather StatementJANMadison29 min

Nearby

Special Weather Statements in Louisiana, 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.