Alert archive / Mississippi / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 59

March 12, 200113 counties in Alabama; 19 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Mar 12, 2001, 9:00 AM CST for 13 counties in Alabama; 19 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 12, 2001, 9:00 AM CST (15:00 UTC)
Expired
Mar 12, 2001, 3:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 32 counties

Bibb County, AL, Dallas County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lamar County, AL, Marengo County, AL, Perry County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Attala County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Lowndes County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Rankin County, MS, Scott County, MS, Smith County, MS, Webster County, MS, Winston County, MS

Warnings issued inside it

9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Mar 12, 9:35 AM CSTSevere Thunderstorm WarningJANSimpson, Smith25 min
Mar 12, 10:00 AM CSTSevere Thunderstorm WarningJANLauderdale, Newton45 min
Mar 12, 10:15 AM CSTSevere Thunderstorm WarningJANNeshoba30 min
Mar 12, 10:18 AM CSTSevere Thunderstorm WarningJANNoxubee, Oktibbeha, Winston57 min
Mar 12, 10:18 AM CSTSevere Thunderstorm WarningJANLowndes57 min
Mar 12, 10:21 AM CSTSevere Thunderstorm WarningJANKemper24 min
Mar 12, 10:49 AM CSTSevere Thunderstorm WarningBMXDallas41 min
Mar 12, 11:03 AM CSTTornado WarningBMXDallas27 min
Mar 12, 11:48 AM CSTFlash Flood WarningBMXDallas117 min

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 3.0 hours before the alert went out and 152 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 12:00Z on 2001-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2001-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 499 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
499 m²/s²
0-3 km storm-relative helicity
534 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 12, 6:00 AM CSTSevere Thunderstorm WatchSPCBaldwin, Choctaw, Clarke, Mobile, Washington5 hr
Mar 12, 10:00 AM CSTTornado WatchSPCButler, Clarke, Conecuh, Mobile, Monroe, Washington5 hr
Mar 12, 11:30 AM CSTTornado WatchSPCBaldwin, Barbour, Bullock, Butler, Clarke, Coffee and 18 more4 hr
Mar 12, 1:45 PM CSTTornado WatchSPCDale, Geneva, Henry, Houston6 hr
Mar 12, 1:00 AM CSTSevere Thunderstorm WatchSPCAdams, Amite, Clarke, Covington, Forrest, Franklin and 20 more5 hr
Mar 12, 3:30 AM CSTSevere Thunderstorm WatchSPCAttala, Carroll, Choctaw, Claiborne, Clarke, Clay and 25 more6 hr

Nearby

Severe Thunderstorm Watches in Mississippi, 2001Severe Thunderstorm Watches in Alabama, 2001Every severe thunderstorm watch in 2001

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.