Alert archive / Mississippi / Tornado Watches in 2015

Tornado Watch 106

April 25, 201510 counties in Alabama; 31 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Apr 25, 2015, 12:50 AM CDT for 10 counties in Alabama; 31 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 25, 2015, 12:50 AM CDT (05:50 UTC)
Expired
Apr 25, 2015, 6:29 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
65 kt
All 41 counties

Dallas County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Lamar County, AL, Marengo County, AL, Perry County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Attala County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Copiah County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Jasper County, MS, Jefferson County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Lowndes County, MS, Madison County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Webster County, MS, Winston County, MS

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 25, 1:05 AM CDTSevere Thunderstorm WarningJANHinds, Issaquena, Madison, Warren, Yazoo55 min
Apr 25, 1:16 AM CDTSevere Thunderstorm WarningJANHolmes44 min
Apr 25, 1:22 AM CDTTornado WarningJANMadison, Yazoo38 min
Apr 25, 1:28 AM CDTSevere Thunderstorm WarningJANChoctaw, Montgomery, Webster33 min
Apr 25, 1:38 AM CDTSevere Thunderstorm WarningJANHinds, Madison, Rankin52 min
Apr 25, 1:44 AM CDTSevere Thunderstorm WarningJANAttala, Leake61 min
Apr 25, 2:01 AM CDTTornado WarningJANLeake, Madison, Rankin, Scott44 min
Apr 25, 2:23 AM CDTTornado WarningJANLeake, Neshoba, Newton, Scott47 min
Apr 25, 2:33 AM CDTSevere Thunderstorm WarningJANNoxubee, Winston42 min
Apr 25, 2:54 AM CDTTornado WarningJANKemper, Lauderdale66 min
Apr 25, 3:27 AM CDTSevere Thunderstorm WarningBMXMarengo, Sumter63 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 5.8 hours before the alert went out and 116 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 2015-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 2015-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 220 square meters per square second.1939587897Sfc1 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
2 J/kg
Mixed-layer CIN
-342 J/kg
Mixed-layer LCL
1029 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
220 m²/s²
0-3 km storm-relative helicity
405 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 25, 2:07 AM CDTMesoscale DiscussionSPCChoctaw, Greene, Pickens, Sumter, Tuscaloosa83 min
Apr 25, 4:12 AM CDTMesoscale DiscussionSPCBaldwin, Butler, Choctaw, Clarke, Conecuh, Dallas and 9 more63 min
Apr 25, 5:00 AM CDTTornado WatchSPCAutauga, Baldwin, Barbour, Bullock, Butler, Clarke and 18 more7 hr
Apr 25, 7:41 AM CDTMesoscale DiscussionSPCCoffee, Covington, Dale, Geneva, Henry, Houston94 min
Apr 25, 9:35 AM CDTMesoscale DiscussionSPCBaldwin, Mobile, Washington115 min
Apr 25, 1:36 PM CDTSevere Thunderstorm WatchSPCBaldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 5 more4 hr
Apr 25, 1:50 PM CDTMesoscale DiscussionSPCBaldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 4 more85 min
Apr 25, 2:10 PM CDTMesoscale DiscussionSPCAutauga, Bibb, Bullock, Calhoun, Chambers, Chilton and 19 more95 min
Apr 25, 3:07 PM CDTSevere Thunderstorm WatchSPCBarbour, Coffee, Dale, Geneva, Henry, Houston and 1 more7 hr
Apr 25, 4:38 PM CDTSevere Thunderstorm WatchSPCBullock, Chambers, Clay, Lee, Macon, Randolph and 2 more5 hr
Apr 24, 9:20 PM CDTMesoscale DiscussionSPCIssaquena, Sharkey, Warren, Washington55 min
Apr 24, 9:59 PM CDTTornado WatchSPCBolivar, Humphreys, Issaquena, Sharkey, Sunflower, Warren and 2 more4 hr
Apr 24, 11:45 PM CDTMesoscale DiscussionSPCAttala, Carroll, Choctaw, Holmes, Humphreys, Issaquena and 10 more90 min
Apr 25, 10:41 AM CDTSevere Thunderstorm WatchSPCAmite, Covington, Forrest, George, Greene, Hancock and 15 more7 hr

Nearby

Tornado Watches in Mississippi, 2015Tornado Watches in Alabama, 2015Every tornado watch in 2015

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.