Alert archive / Mississippi / Tornado Warnings in 2007

Tornado Warning 95, NWS Jackson, MS

October 22, 2007Washington County, Mississippi; Chicot County, Arkansas

NWS Jackson, MS issued this tornado warning at Oct 22, 2007, 4:30 PM CDT for Washington County, Mississippi; Chicot County, Arkansas. It was in force for 30 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
Oct 22, 2007, 4:30 PM CDT (21:30 UTC)
Expired
Oct 22, 2007, 5:00 PM CDT
In force
30 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon

Counties Chicot County, AR, Washington County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 143 km from the middle of the area, began a volume at 21:30 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

Jackson, MS (KJAN), launched 12:00Z, 9.5 hours before the alert went out and 134 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 2007-10-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 279 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2007-10-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 191 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
279 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
581 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
191 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KJAN 222129
TORJAN
ARC017-MSC151-222200-
/O.NEW.KJAN.TO.W.0095.071022T2130Z-071022T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
430 PM CDT MON OCT 22 2007

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  WASHINGTON COUNTY IN NORTHWEST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...AVON...LELAND...
  SOUTHEASTERN CHICOT COUNTY IN SOUTHEAST ARKANSAS...

* UNTIL 500 PM CDT

* AT 430 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  TORNADO NEAR AVON...MOVING NORTHEAST AT 15 MPH.

* THE TORNADO WILL BE NEAR...
  WAYSIDE BY 440 PM CDT...
  8 MILES NORTHWEST OF ESTILL BY 450 PM CDT...
  6 MILES SOUTH OF LELAND AND 8 MILES WEST OF TRIBBETT BY 500 PM
  CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3348 9095 3334 9076 3331 9077 3302 9109
      3302 9113 3303 9115 3312 9119 3325 9116
TIME...MOT...LOC 2130Z 223DEG 17KT 3322 9105

$$

AEG
1 follow-up statement
000 
WWUS54 KJAN 222149
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
448 PM CDT MON OCT 22 2007

ARC017-MSC151-222200-
/O.CON.KJAN.TO.W.0095.000000T0000Z-071022T2200Z/
CHICOT AR-WASHINGTON MS-
448 PM CDT MON OCT 22 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
WASHINGTON AND SOUTHEASTERN CHICOT COUNTIES...

AT 448 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS STORM WAS 
LOCATED NEAR WAYSIDE...OR ABOUT 6 MILES NORTHEAST OF AVON...MOVING 
NORTHEAST AT 25 MPH.

ANOTHER SEVERE THUNDERSTORM WITH STRONG ROTATION WAS ABOUT 8 MILES 
WEST OF GLEN ALLAN...MOVING NORTHEAST AT 25 MPH.

LAT...LON 3348 9095 3334 9076 3331 9077 3302 9109
      3302 9113 3303 9115 3312 9119 3325 9116
TIME...MOT...LOC 2148Z 222DEG 22KT 3332 9097

$$

AEG

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 22, 4:19 AM CDTFlash Flood WatchJANAdams, Claiborne, Clarke, Copiah, Covington, Forrest and 23 more20 hr
Oct 22, 4:11 PM CDTSevere Thunderstorm WarningJANIssaquena34 min
Oct 22, 4:53 PM CDTTornado WarningJANIssaquena, Sharkey, Washington52 min
Oct 22, 6:37 PM CDTSevere Thunderstorm WarningJANJefferson Davis, Lamar, Marion24 min
Oct 22, 6:38 PM CDTTornado WarningJANForrest, Lamar43 min

Nearby

Tornado Warnings in Mississippi, 2007Tornado Warnings in Arkansas, 2007Every tornado warning in 2007Tornadoes in 2007

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.