Alert archive / Mississippi / Tornado Watches in 1997

Tornado Watch 179

April 22, 1997Lamar County, Pickens County, Alabama; 34 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Apr 22, 1997, 11:15 AM CDT for Lamar County, Pickens County, Alabama; 34 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 22, 1997, 11:15 AM CDT (16:15 UTC)
Expired
Apr 22, 1997, 5:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 36 counties

Lamar County, AL, Pickens County, AL, Attala County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Coahoma County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Itawamba County, MS, Lafayette County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Union County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Yazoo County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 22, 11:32 AM CDTTornado WarningJANHolmes, Yazoo43 min

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 4.3 hours before the alert went out and 160 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 1997-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1284 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 12:00Z on 1997-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.193958Sfc1 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
1284 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
525 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
259 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

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
Apr 22, 8:45 AM CDTTornado WatchSPCSumter6 hr
Apr 22, 1:30 PM CDTTornado WatchSPCAutauga, Baldwin, Bibb, Blount, Chilton, Choctaw and 34 more8 hr
Apr 22, 2:45 PM CDTTornado WatchSPCBarbour, Bullock, Butler, Calhoun, Chambers, Cherokee and 22 more6 hr
Apr 21, 10:00 PM CDTSevere Thunderstorm WatchSPCAdams6 hr
Apr 22, 2:30 PM CDTSevere Thunderstorm WatchSPCAdams, Amite, Covington, Franklin, Jefferson, Jefferson Davis and 8 more7 hr

Nearby

Tornado Watches in Mississippi, 1997Tornado Watches in Alabama, 1997Every tornado watch in 1997

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.