Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 63, NWS Jackson, MS

March 2, 2012Grenada County, Montgomery County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Mar 2, 2012, 1:56 PM CST for Grenada County, Montgomery County, Mississippi. It was in force for 33 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: Mar 2, 2012, 1:56 PM CST (19:56 UTC)
Expired: Mar 2, 2012, 2:29 PM CST
In force: 33 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Grenada County, MS, Montgomery County, MS

The radar

The Columbus AFB radar (KGWX), 118 km from the middle of the area, began a volume at 19:57 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 2, 1:20 PM CST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 7.9 hours before the alert went out and 124 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: 1625 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 645 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 291 m²/s²
0-3 km storm-relative helicity: 304 m²/s²
Significant tornado parameter: 3.2
Supercell composite: 11.9

Open this sounding in Storm Lab

The text

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

272 
WUUS54 KJAN 021956
SVRJAN
MSC043-097-022045-
/O.NEW.KJAN.SV.W.0063.120302T1956Z-120302T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
156 PM CST FRI MAR 2 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN GRENADA COUNTY IN NORTH CENTRAL MISSISSIPPI...
  NORTHWESTERN MONTGOMERY COUNTY IN NORTH CENTRAL MISSISSIPPI...

* UNTIL 245 PM CST

* AT 156 PM CST...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
  ELLIOTT MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GORE SPRINGS AND MISTERTON BY 210 PM CST...

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST FRIDAY EVENING FOR
NORTHERN MISSISSIPPI. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 900 PM CST FRIDAY EVENING FOR SOUTHEAST ARKANSAS AND
NORTHEAST LOUISIANA AND NORTHWESTERN MISSISSIPPI.

&&

LAT...LON 3387 8951 3384 8950 3373 8950 3372 8951
      3370 8950 3366 8951 3364 8978 3367 8978
      3368 8985 3388 8964
TIME...MOT...LOC 1956Z 233DEG 30KT 3370 8972

$$

BYB

2 follow-up statements

090 
WWUS54 KJAN 022012
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
212 PM CST FRI MAR 2 2012

MSC097-022022-
/O.CAN.KJAN.SV.W.0063.000000T0000Z-120302T2045Z/
MONTGOMERY MS-
212 PM CST FRI MAR 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MONTGOMERY COUNTY
IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST FRIDAY EVENING FOR
NORTHERN MISSISSIPPI. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 900 PM CST FRIDAY EVENING FOR SOUTHEAST ARKANSAS AND
NORTHEAST LOUISIANA AND NORTHWESTERN MISSISSIPPI.

LAT...LON 3384 8950 3373 8950 3368 8951 3368 8965
      3370 8966 3379 8967 3387 8951
TIME...MOT...LOC 2012Z 250DEG 43KT 3375 8949

$$

MSC043-022045-
/O.CON.KJAN.SV.W.0063.000000T0000Z-120302T2045Z/
GRENADA MS-
212 PM CST FRI MAR 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CST
FOR EASTERN GRENADA COUNTY...

AT 212 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
MISTERTON MOVING EAST AT 50 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST FRIDAY EVENING FOR
NORTHERN MISSISSIPPI. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 900 PM CST FRIDAY EVENING FOR SOUTHEAST ARKANSAS AND
NORTHEAST LOUISIANA AND NORTHWESTERN MISSISSIPPI.

&&

LAT...LON 3384 8950 3373 8950 3368 8951 3368 8965
      3370 8966 3379 8967 3387 8951
TIME...MOT...LOC 2012Z 250DEG 43KT 3375 8949

$$

BYB

805 
WWUS54 KJAN 022029
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
229 PM CST FRI MAR 2 2012

MSC043-022039-
/O.CAN.KJAN.SV.W.0063.000000T0000Z-120302T2045Z/
GRENADA MS-
229 PM CST FRI MAR 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GRENADA COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST FRIDAY EVENING FOR
NORTHERN MISSISSIPPI.

LAT...LON 3384 8950 3373 8950 3368 8951 3368 8965
      3370 8966 3379 8967 3387 8951
TIME...MOT...LOC 2029Z 250DEG 43KT 3380 8925

$$

BYB

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 2, 3:18 AM CST	Wind Advisory	JAN	Bolivar, Carroll, Grenada, Holmes, Humphreys, Issaquena and 5 more	13 hr
Mar 2, 12:52 PM CST	Special Weather Statement	JAN	Choctaw	28 min
Mar 2, 1:27 PM CST	Special Weather Statement	JAN	Clay	33 min
Mar 2, 1:30 PM CST	Special Weather Statement	JAN	Grenada	30 min
Mar 2, 1:42 PM CST	Special Weather Statement	JAN	Choctaw	28 min
Mar 2, 2:06 PM CST	Severe Thunderstorm Warning	JAN	Oktibbeha	39 min
Mar 2, 2:29 PM CST	Severe Thunderstorm Warning	JAN	Bolivar, Washington	61 min
Mar 2, 2:33 PM CST	Severe Thunderstorm Warning	JAN	Clay, Lowndes	41 min
Mar 2, 2:44 PM CST	Severe Thunderstorm Warning	JAN	Lowndes	31 min
Mar 2, 2:56 PM CST	Tornado Warning	JAN	Lowndes	18 min
Mar 2, 3:05 PM CST	Special Weather Statement	JAN	Sunflower	30 min
Mar 2, 3:25 PM CST	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore, Montgomery	65 min
Mar 2, 3:36 PM CST	Severe Thunderstorm Warning	JAN	Leflore, Sunflower, Washington	42 min
Mar 2, 3:54 PM CST	Special Weather Statement	JAN	Washington	31 min
Mar 2, 4:07 PM CST	Severe Thunderstorm Warning	JAN	Issaquena, Washington	53 min
Mar 2, 4:14 PM CST	Special Weather Statement	JAN	Marion	31 min
Mar 2, 4:20 PM CST	Special Weather Statement	JAN	Lawrence	30 min
Mar 2, 4:21 PM CST	Special Weather Statement	JAN	Jasper, Lauderdale	44 min
Mar 2, 4:32 PM CST	Severe Thunderstorm Warning	JAN	Carroll, Holmes, Humphreys, Leflore, Sunflower	58 min
Mar 2, 4:41 PM CST	Severe Thunderstorm Warning	JAN	Grenada, Montgomery, Webster	34 min
Mar 2, 4:55 PM CST	Special Weather Statement	JAN	Jones	30 min
Mar 2, 5:02 PM CST	Severe Thunderstorm Warning	JAN	Covington, Jones	44 min
Mar 2, 5:10 PM CST	Severe Thunderstorm Warning	JAN	Humphreys, Sharkey, Washington	35 min
Mar 2, 5:11 PM CST	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis	34 min
Mar 2, 5:12 PM CST	Severe Thunderstorm Warning	JAN	Clay, Webster	33 min
Mar 2, 5:19 PM CST	Severe Thunderstorm Warning	JAN	Carroll, Montgomery	41 min
Mar 2, 5:22 PM CST	Tornado Warning	JAN	Covington	23 min
Mar 2, 5:38 PM CST	Severe Thunderstorm Warning	JAN	Carroll, Holmes, Humphreys	67 min
Mar 2, 5:43 PM CST	Tornado Warning	JAN	Marion	27 min
Mar 2, 5:58 PM CST	Severe Thunderstorm Warning	JAN	Clay, Webster	47 min

Nearby

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.