Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Jackson, MS

April 5, 2012Grenada County, Mississippi

NWS Jackson, MS issued this special weather statement at Apr 5, 2012, 3:01 PM CDT for Grenada County, Mississippi. It was in force for 29 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, 3:01 PM CDT (20:01 UTC)
Expired: Apr 5, 2012, 3:30 PM CDT
In force: 29 min
Issued by: NWS Jackson, MS

County Grenada County, MS

The radar

The Columbus AFB radar (KGWX), 126 km from the middle of the area, began a volume at 20:01 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 (KLZK), launched 12:00Z, 8.0 hours before the alert went out and 122 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: 42 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 1448 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

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, 2:37 PM CDT, 24 minutes earlier.

Area forecast discussion, Apr 5, 2:37 PM CDT, 24 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
237 PM CDT THU APR 5 2012

.DISCUSSION...RADAR IS RELATIVELY QUIET ACROSS THE CWA AT THIS
TIME...AS THE SURFACE FRONT CONTINUES TO SINK SOUTHEASTWARD OUT OF
THE AREA. ONLY A FEW SHOWERS REMAIN OVER THE PINE BELT AHEAD OF THIS
FRONT. MEANWHILE ADDITIONAL CONVECTION HAS DEVELOPED JUST NORTH OF
THE AREA...WHERE LAPSE RATES IMPROVE SIGNIFICANTLY UNDER AN UPPER
LEVEL LOW CENTERED NEAR MEMPHIS. WITH FREEZING LEVELS FALLING TO THE
7-8 KFT RANGE IN THE VICINITY OF THE UPPER LOW...MANY OF THE STORMS
ARE PRODUCING HAIL.

SHORT TERM (THROUGH SATURDAY NIGHT)...THE UPPER LOW WILL MOVE
SOUTHEASTWARD ACROSS NORTHEAST MISSISSIPPI LATE THIS AFTERNOON. THIS
WILL BRING WITH IT THE POTENTIAL FOR THUNDERSTORMS...SOME OF WHICH
MAY BE STRONG OR SEVERE. A FEW LOWER-END SEVERE HAIL REPORTS WILL
CERTAINLY NOT BE OUT OF THE QUESTION OVER THE GOLDEN TRIANGLE AREA
WITH THE MORE FAVORABLE ENVIRONMENT ACCOMPANYING THE LOW. THIS
ACTIVITY SHOULD MOVE OUT OF THE AREA BY EARLY EVENING. ELSEWHERE...
DRY CONDITIONS ARE EXPECTED TONIGHT AS DRIER AIR FILTERS INTO THE
REGION.

THE REMAINDER OF THE SHORT TERM WILL BE QUIET. UPPER RIDGING ALOFT
AND SURFACE HIGH PRESSURE OVER THE EASTERN CONUS WILL BUILD IN
THROUGH FRIDAY WITH NO PRECIPITATION...AND FEW CLOUDS FOR THAT
MATTER...EXPECTED THROUGH THE WEEKEND. DID NOT DEVIATE SIGNIFICANTLY
FROM MAV TEMPS DURING THE SHORT TERM...EXCEPT ON SATURDAY NIGHT WHEN
THERE WERE LARGER DIFFERENCES AMONGST THE GUIDANCE SUITE. LEANED MORE
TOWARD THE ECMWF DURING THIS PERIOD. /DL/

LONG TERM...LOOKS LIKE IT WILL BE RELATIVELY QUIET IN THE EXTENDED
PERIOD. THE GFS DRAGS A BOUNDARY ACROSS THE STATE ON SUNDAY...AND
THIS MAY KICK OFF SOME ISOLATED THUNDERSTORM 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...VFR CONDITIONS ARE EXPECTED ACROSS ALL SITES EXCEPT FOR
SOME ISOLATED STRONG STORMS AROUND GTR AND HBG FOR THIS AFTERNOON.
MVFR TO ISOLATED IFR CONDITIONS FOR SOME PATCHY SHALLOW FOG MAY
DEVELOP OVER NIGHT...ESP ACROSS AREAS THAT HAD RECEIVED SOME
RAINFALL. THE PATCHY SHALLOW FOG WILL LIFT BY MID MORNING. OTHERWISE
VFR CONDITIONS CAN BE EXPECTED FOR FRIDAY./17/

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       52  75  48  78 /   6   0   0   0
MERIDIAN      50  77  46  78 /  10   0   0   0
VICKSBURG     52  75  49  78 /   5   0   0   0
HATTIESBURG   55  80  50  79 /   5   0   0   0
NATCHEZ       54  75  51  77 /   3   0   0   0
GREENVILLE    53  71  47  78 /   4   0   0   0
GREENWOOD     51  73  46  78 /   6   0   0   0

&&

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

DL/17/15

Hazardous weather outlook, Apr 5, 2:08 PM CDT, 53 minutes before

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In the hours before

Special weather statement, Apr 5, 12:04 PM CDT, 2 hours 57 minutes before

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Special weather statement, Apr 5, 1:08 PM CDT, 1 hour 53 minutes before

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Special weather statement, Apr 5, 1:53 PM CDT, 1 hour 8 minutes before

MSZ072-073-051925-
MARION MS-LAMAR MS-
153 PM CDT THU APR 5 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
153 PM CDT THU APR 5 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
45 MPH WIND GUSTS WAS LOCATED 6 MILES NORTH OF PINEBUR AT 154 PM
CDT...MOVING EAST AT 30 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 LAMAR AND EAST CENTRAL MARION COUNTIES SHOULD
MONITOR THIS STORM CLOSELY.

LAT...LON 3114 8977 3132 8974 3129 8935 3107 8935
TIME...MOT...LOC 1854Z 278DEG 24KT 3122 8965

BYB

Local storm report, Apr 5, 2:13 PM CDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
213 PM CDT THU APR 05 2012

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

0230 AM     HAIL             3 NW COLLINSTON         32.72N 91.91W
04/05/2012  E1.00 INCH       MOREHOUSE          LA   PUBLIC

&&

GERARD

Special weather statement, Apr 5, 2:26 PM CDT, 35 minutes before

MSZ026-052010-
GRENADA MS-
226 PM CDT THU APR 5 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
226 PM CDT THU APR 5 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL
AND 40 TO 50 MPH WINDS WAS LOCATED 12 MILES NORTHWEST OF HOLCOMB AT
225 PM CDT...MOVING SOUTHEAST AT 20 MPH.

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

THIS STORM IS INTENSE AND COULD BECOME SEVERE.

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 GRENADA COUNTY SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3378 8964 3377 8964 3367 8975 3367 8994
      3381 9010 3382 8999 3383 8997 3383 8994
      3390 8992 3390 8985
TIME...MOT...LOC 1925Z 311DEG 18KT 3391 9005

BYB

Special weather statement, Apr 5, 3:01 PM CDT, 0 minutes before

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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, 4:44 AM CDT	Special Weather Statement	JAN	Yazoo	31 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, 3:16 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.