Alert archive / Louisiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 438, NWS Jackson, MS

July 20, 2012Tensas Parish, Louisiana; Claiborne County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jul 20, 2012, 7:07 PM CDT for Tensas Parish, Louisiana; Claiborne County, Mississippi. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 20, 2012, 7:07 PM CDT (00:07 UTC)
Expired: Jul 20, 2012, 7:45 PM CDT
In force: 38 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Tensas Parish, LA, Claiborne County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 123 km from the middle of the area, began a volume at 00:07 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.

What was reported inside it

Time	Report	Where	Remark
Jul 20, 7:20 PM CDT	HAIL 0.5	St. Joseph, LA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.1 hours before the alert went out and 115 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: 4897 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1030 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 9.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

700 
WUUS54 KJAN 210007
SVRJAN
LAC107-MSC021-210045-
/O.NEW.KJAN.SV.W.0438.120721T0007Z-120721T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
707 PM CDT FRI JUL 20 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL TENSAS PARISH IN NORTHEAST LOUISIANA...
  WEST CENTRAL CLAIBORNE COUNTY IN SOUTHWEST MISSISSIPPI...

* UNTIL 745 PM CDT

* AT 707 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  LAKE BRUIN MOVING SOUTH AT 5 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ST.
  JOSEPH AND ALCORN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

&&

LAT...LON 3203 9130 3204 9111 3186 9108 3187 9137
TIME...MOT...LOC 0007Z 005DEG 6KT 3197 9126

$$

BK

2 follow-up statements

110 
WWUS54 KJAN 210039
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
739 PM CDT FRI JUL 20 2012

LAC107-210048-
/O.CAN.KJAN.SV.W.0438.000000T0000Z-120721T0045Z/
TENSAS LA-
739 PM CDT FRI JUL 20 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TENSAS PARISH IS
CANCELLED...

LAT...LON 3191 9120 3192 9118 3194 9119 3196 9119
      3198 9116 3199 9110 3187 9108 3187 9125
TIME...MOT...LOC 0038Z 005DEG 6KT 3192 9127

$$

MSC021-210045-
/O.CON.KJAN.SV.W.0438.000000T0000Z-120721T0045Z/
CLAIBORNE MS-
739 PM CDT FRI JUL 20 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR WEST CENTRAL CLAIBORNE COUNTY...

AT 738 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS 
OF 60 MPH.  THIS STORM WAS LOCATED JUST NORTH OF ALCORN MOVING 
SOUTHEAST AT 5 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

&&

LAT...LON 3191 9120 3192 9118 3194 9119 3196 9119
      3198 9116 3199 9110 3187 9108 3187 9125
TIME...MOT...LOC 0038Z 005DEG 6KT 3192 9127

$$

BK

099 
WWUS54 KJAN 210043
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
743 PM CDT FRI JUL 20 2012

MSC021-210053-
/O.EXP.KJAN.SV.W.0438.000000T0000Z-120721T0045Z/
CLAIBORNE MS-
743 PM CDT FRI JUL 20 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL CLAIBORNE COUNTY
WILL EXPIRE AT 745 PM CDT...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS WEAKENED 
BELOW SEVERE LIMITS AND THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3191 9120 3192 9118 3194 9119 3196 9119
      3198 9116 3199 9110 3187 9108 3187 9125
TIME...MOT...LOC 0043Z 005DEG 6KT 3191 9127

$$

BK

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 20, 3:49 PM CDT, 3 hours 18 minutes earlier.

Area forecast discussion, Jul 20, 3:49 PM CDT, 3 hours 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
349 PM CDT FRI JUL 20 2012

.SHORT TERM...TONIGHT THROUGH SUNDAY NIGHT
WENT CLOSE TO MAV NUMBERS FOR TEMPS THROUGH MONDAY WHILE BLENDING THE
NAM MOS INTO HIGHS FOR SATURDAY. SHORTWAVE MOVING THROUGH ARKANSAS ON
THE EASTERN SIDE OF THE RIDGE TO THE NORTHWEST WILL BE THE FOCUS TO
MOVE A FRONTAL BOUNDARY INTO THE REGION SATURDAY AND INTO SUNDAY.
TWEAKED MAV POPS SLIGHTLY FOR THE NEXT FEW DAYS WHILE TWEAKING POPS
TONIGHT AND SATURDAY NIGHT UPWARD DUE TO THE CHANCES FOR NOCTURNAL
CONVECTION. SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE AS THE FRONTAL
BOUNDARY DRIFTS SOUTH. DRIER AIR...PWATS OF 1.5 TO 2.0 INCHES..WILL
BEGIN TO FILTER IN THE NORTH TOMORROW EVENING INTO SUNDAY. CHANCES OF
RAIN WILL INCREASE SUNDAY IN ADVANCE OF AN APPROACHING UPPER LOW THAT
WILL DEVELOP OVER THE GULF COAST AND PROPAGATE TO THE NORTHWEST UNDER
THE BASE OF THE RIDGE BUILDING TO THE EAST OVER THE CENTRAL GREAT
PLAINS. FORECAST SOUNDINGS INDICATE TEMPS WILL DECREASE SLIGHTLY OVER
THE NEXT FEW DAYS AS DRIER AIR AND COOLER TEMPS ALOFT WILL FILTER IN
THE REGION. DID NOT MAKE ANY CHANCES PAST SUNDAY NIGHT SO PREVIOUS
DISCUSSION FOLLOWS. /DC/

.LONG TERM...MONDAY INTO LATE WEEK...
THE MID/UPPER HIGH WILL SHIFT POSITION AND BECOME MORE ORIENTED OVER
OUR REGION. THIS WILL RESULT IN GENERALLY LESS PRECIP POTENTIAL EACH
DAY AND TEMPS STEADILY WARMING DURING THE WEEK. GFS GUID TEMPS
INDICATED THIS AND STEADILY WARMED INTO THE MID 90S FOR HIGHS. MOST
OF THIS WAS ACCEPTED WITH JUST A COUPLE SMALL TWEAKS UPWARD AT SELECT
SITES. THE LOW LEVEL FLOW WILL MAINLY HAVE A SW COMPONENT AND THIS
SHOULD HELP READINGS FROM GETTING TOO HOT...MID 90S SEEMS TO FIT. AS
FOR PRECIP POTENTIAL...THE GFS STILL IS THE MOST AGGRESSIVE AND
INDICATES 30-40% CHANCES EACH AFTERNOON. THIS SEEMS A BIT OVER DONE
AND POPS WERE LOWERED TO THE 20% RANGE (SLGHT CHC). ONE CONCERN FOR
NEXT WEEK (ESP TUE-FRI) WILL BE THE HEAT INDEX. GOING FORECAST SHOWS
A DECENT LIKELIHOOD OF VALUES NEAR 105 DEGREES DURING THIS TIME.
ADVISORIES MAY BE NEEDED IF MID 90S OCCUR AND HUMIDITY HOLDS. /CME/

&&

.AVIATION...
VFR CONDS MOSTLY PREVAIL MINUS BRIEF MVFR AT KHBG. TSRA
HAS DVLPD BTW KHBG AND KMCB WITH TOPS AOA FL500. ADDITIONAL TSRA
COULD DVLP ACRS MS RIVER DELTA THIS AFTN NEAR KGLH AND SHIFT S
THROUGH 21/02Z TOWARDS KTVR/KJAN/KMLU WITH PERIODIC MVFR CONDS PSBL.
SFC WINDS OUTSIDE OF TSRA WILL BE WEST AT 5-10 KT WITH GUSTS TO 14
BEFORE BECMG NEAR CALM OVERNGT. MVFR TO IFR CIGS PSBL KGTR/MEI
21/10-13Z WITH LOW STRATUS. VFR CONDS TO RETURN BY 21/15Z ACRS
REGION WITH VCTS ACRS CNTRL/SRN TAF SITES AGAIN SAT AFTN. /ALLEN/

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       74  91  73  89 /  35  41  46  50
MERIDIAN      73  90  72  90 /  39  46  50  53
VICKSBURG     75  92  73  89 /  38  36  43  45
HATTIESBURG   73  90  74  90 /  45  69  43  53
NATCHEZ       74  90  73  87 /  37  50  36  53
GREENVILLE    75  93  74  90 /  30  20  28  28
GREENWOOD     73  91  72  90 /  31  24  30  37

&&

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

DC/CME/ALLEN

Hazardous weather outlook, Jul 20, 3:08 PM CDT, 3 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
308 PM CDT FRI JUL 20 2012

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>028-034>037-
040>043-047>049-053>055-059>063-211945-
ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-
MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-BOLIVAR-
SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WASHINGTON-HUMPHREYS-
HOLMES-ATTALA-ISSAQUENA-SHARKEY-YAZOO-MADISON MS-WARREN-HINDS-
RANKIN-CLAIBORNE-COPIAH-SIMPSON-JEFFERSON-ADAMS-FRANKLIN MS-
LINCOLN-LAWRENCE-
241 PM CDT FRI JUL 20 2012

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

.DAY ONE...TONIGHT AND SATURDAY

STRONG AND SEVERE STORMS CAPABLE OF GUSTY WINDS TO 60 MPH AND QUARTER
SIZED HAIL WILL BE POSSIBLE THIS AFTERNOON AND MOVE SOUTH THROUGH
EARLY EVENING. THERE IS A CHANCE THUNDERSTORMS COULD ORGANIZE INTO
MULTI CELL CLUSTERS OR A LINE ALONG THE MISSISSIPPI RIVER THROUGH
LATE AFTERNOON INTO THE EARLY EVENING...INCREASING THE SEVERE
WEATHER RISK OF DAMAGING WINDS. STORMS SHOULD WEAKEN THROUGH MID TO
LATE EVENING AS THEY MOVE SOUTH.

A FEW STRONG TO SEVERE STORMS WILL BE POSSIBLE AGAIN SATURDAY
AFTERNOON INTO EARLY SATURDAY EVENING AS THE REGION WILL CONTINUE TO
BE SITUATED IN A HOT AND UNSTABLE AIRMASS. WIND GUSTS OF 50 TO 60 MPH
AND QUARTER SIZED HAIL COULD OCCUR.

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

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 NEXT THURSDAY.

MSZ029>033-038-039-044>046-050>052-056>058-064>066-072>074-211945-
WEBSTER-CLAY-LOWNDES-CHOCTAW-OKTIBBEHA-WINSTON-NOXUBEE-LEAKE-
NESHOBA-KEMPER-SCOTT-NEWTON-LAUDERDALE-SMITH-JASPER-CLARKE-
JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR-FORREST-
241 PM CDT FRI JUL 20 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN MISSISSIPPI.

.DAY ONE...TONIGHT AND SATURDAY

A FEW STRONG TO SEVERE STORMS WILL BE POSSIBLE THIS AFTERNOON AND
AGAIN ON SATURDAY AS THE REGION WILL CONTINUE TO BE SITUATED IN A
WARM AND UNSTABLE AIRMASS. WIND GUSTS OF 50 TO 60 MPH AND QUARTER
SIZED HAIL COULD OCCUR. IN ADDITION...HEAVY RAINFALL WILL OCCUR WITH
THIS ACTIVITY AND COULD POSE A FLASH FLOODING RISK.

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

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 NEXT THURSDAY.

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

ALLEN

In the hours before

Special weather statement, Jul 20, 5:46 PM CDT, 1 hour 21 minutes before

MSZ062-202315-
LINCOLN MS-
546 PM CDT FRI JUL 20 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
546 PM CDT FRI JUL 20 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED OVER CENTER POINT AT 547 PM CDT...
MOVING SOUTH AT 10 MPH.

DANGEROUS CLOUD TO GROUND LIGHTNING IS 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 SOUTH CENTRAL LINCOLN COUNTY SHOULD MONITOR THIS STORM
CLOSELY.

LAT...LON 3149 9063 3147 9048 3134 9049 3134 9063
TIME...MOT...LOC 2247Z 008DEG 12KT 3140 9060

BK

Special weather statement, Jul 20, 6:29 PM CDT, 38 minutes before

MSZ061-210000-
FRANKLIN MS-
629 PM CDT FRI JUL 20 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
629 PM CDT FRI JUL 20 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED 4 MILES EAST OF KIRBY AT 629 PM CDT...
MOVING SOUTH AT 10 MPH.

VERY HEAVY RAIN ALONG WITH 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 CENTRAL FRANKLIN COUNTY SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3141 9111 3161 9099 3161 9092 3157 9078
      3134 9086 3134 9088
TIME...MOT...LOC 2329Z 021DEG 5KT 3151 9092

BK

Special weather statement, Jul 20, 6:35 PM CDT, 32 minutes before

MSZ049-210005-
RANKIN MS-
635 PM CDT FRI JUL 20 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
635 PM CDT FRI JUL 20 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED OVER JOHNS AT 635 PM CDT...MOVING
SOUTH AT 10 MPH.

VERY HEAVY RAIN ALONG WITH 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 SOUTHEASTERN RANKIN COUNTY SHOULD MONITOR THIS STORM
CLOSELY.

LAT...LON 3205 8994 3215 8997 3221 8977 3214 8973
      3205 8973 3204 8973 3205 8993
TIME...MOT...LOC 2335Z 339DEG 5KT 3210 8983

BK

Special weather statement, Jul 20, 6:45 PM CDT, 22 minutes before

LAZ024-026-210015-
CONCORDIA LA-CATAHOULA LA-
645 PM CDT FRI JUL 20 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
645 PM CDT FRI JUL 20 2012

A LINE OF THUNDERSTORMS CAPABLE OF PRODUCING 30 TO 40 MPH WINDS WAS
LOCATED FROM 7 MILES EAST OF DEER PARK TO 15 MILES SOUTHWEST OF
BLACK HAWK AT 645 PM CDT...MOVING WEST AT 20 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 SOUTHWESTERN CATAHOULA AND SOUTHERN CONCORDIA PARISHES
SHOULD MONITOR THESE STORMS CLOSELY.

LAT...LON 3156 9201 3148 9152 3137 9147 3137 9152
      3143 9155 3139 9158 3129 9151 3126 9165
      3118 9158 3113 9162 3109 9158 3099 9166
      3104 9166 3104 9172 3120 9170 3129 9191
      3128 9194 3122 9192 3123 9200
TIME...MOT...LOC 2345Z 099DEG 15KT 3138 9148 3098 9178

BK

Special weather statement, Jul 20, 6:46 PM CDT, 21 minutes before

LAZ025-210015-
TENSAS LA-
646 PM CDT FRI JUL 20 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
646 PM CDT FRI JUL 20 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED OVER LAKE BRUIN AT 647 PM CDT...MOVING
SOUTH AT 5 MPH.

DANGEROUS CLOUD TO GROUND LIGHTNING IS 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 CENTRAL TENSAS PARISH SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3210 9137 3207 9116 3197 9117 3194 9119
      3192 9118 3186 9127 3183 9125 3183 9129
      3186 9130 3186 9132 3184 9135 3185 9144
TIME...MOT...LOC 2347Z 008DEG 6KT 3199 9128

BK

Special weather statement, Jul 20, 7:00 PM CDT, 7 minutes before

MSZ055-210030-
SIMPSON MS-
700 PM CDT FRI JUL 20 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
700 PM CDT FRI JUL 20 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED 3 MILES SOUTHEAST OF UNION AT 700 PM
CDT...MOVING SOUTH AT 10 MPH.

DANGEROUS CLOUD TO GROUND LIGHTNING IS 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 SOUTHWESTERN SIMPSON COUNTY SHOULD MONITOR THIS STORM
CLOSELY.

LAT...LON 3177 9013 3177 9011 3179 9011 3180 9015
      3183 9014 3184 9016 3185 9014 3192 9017
      3193 8996 3177 8993 3175 9012
TIME...MOT...LOC 0000Z 356DEG 7KT 3183 9005

BK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 5:47 AM CDT	Special Weather Statement	JAN	West Carroll	43 min
Jul 20, 7:00 PM CDT	Special Weather Statement	JAN	Simpson	30 min
Jul 20, 7:11 PM CDT	Special Weather Statement	JAN	Simpson	29 min
Jul 21, 3:48 AM CDT	Special Weather Statement	JAN	Noxubee	32 min
Jul 21, 4:19 AM CDT	Special Weather Statement	JAN	Lowndes, Noxubee	56 min
Jul 21, 5:45 AM CDT	Special Weather Statement	JAN	Newton	45 min
Jul 21, 5:50 AM CDT	Severe Thunderstorm Warning	JAN	Newton	27 min
Jul 21, 6:38 AM CDT	Flash Flood Warning	JAN	Kemper, Lauderdale	2 hr
Jul 21, 6:56 AM CDT	Special Weather Statement	JAN	Rankin	59 min
Jul 21, 7:07 AM CDT	Flash Flood Warning	JAN	Holmes	3 hr
Jul 21, 8:28 AM CDT	Flash Flood Warning	JAN	Rankin	2 hr
Jul 21, 9:25 AM CDT	Flash Flood Warning	JAN	Copiah, Franklin, Lincoln	2 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 2012 Severe Thunderstorm Warnings in Mississippi, 2012 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.