Alert archive / Arkansas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 316, NWS Jackson, MS

July 9, 2007Chicot County, Arkansas

NWS Jackson, MS issued this severe thunderstorm warning at Jul 9, 2007, 3:05 PM CDT for Chicot County, Arkansas. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 9, 2007, 3:05 PM CDT (20:05 UTC)
Expired: Jul 9, 2007, 3:30 PM CDT
In force: 25 min
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County Chicot County, AR

The radar

The Jackson/Brandon,MS radar (KDGX), 164 km from the middle of the area, began a volume at 20:05 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, 8.1 hours before the alert went out and 155 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: 911 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 917 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 9, 12:00 PM CDT, 3 hours 5 minutes earlier.

Area forecast discussion, Jul 9, 12:00 PM CDT, 3 hours 5 minutes before

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Hazardous weather outlook, Jul 9, 7:50 AM CDT, 7 hours 15 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
750 AM CDT MON JUL 9 2007

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
100915-
ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-
MADISON-FRANKLIN-CATAHOULA-TENSAS-CONCORDIA-BOLIVAR-SUNFLOWER-
LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES-CHOCTAW-
OKTIBBEHA-WASHINGTON-HUMPHREYS-HOLMES-ATTALA-WINSTON-NOXUBEE-
ISSAQUENA-SHARKEY-YAZOO-LEAKE-NESHOBA-KEMPER-WARREN-HINDS-RANKIN-
SCOTT-NEWTON-LAUDERDALE-CLAIBORNE-COPIAH-SIMPSON-SMITH-JASPER-
CLARKE-JEFFERSON-ADAMS-LINCOLN-LAWRENCE-JEFFERSON DAVIS-COVINGTON-
JONES-MARION-LAMAR-FORREST-
750 AM CDT MON JUL 9 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI...
NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA TODAY
AS A STOUT UPPER LEVEL LOW MOVES INTO THE AREA BY THIS AFTERNOON.
THIS FEATURE WILL HELP TO INCREASE DEEP LAYER WIND FIELDS TO VALUES
ABOVE NORMAL FOR JULY. COMBINE THAT WITH DECENT INSTABILITY AND
STRONG LIFT...AND NUMEROUS THUNDERSTORMS ARE EXPECTED BY AFTERNOON.
THE MAIN RISK WILL BE FOR DAMAGING WIND GUSTS IN EXCESS OF 60 MPH.
SMALL HAIL WILL ALSO BE POSSIBLE WITH A FEW STORMS. THE MOST ACTIVE
STORMS ARE EXPECTED BETWEEN NOON AND 8 PM WITH ALL ACTIVITY
DIMINISHING BY LATE EVENING.

THERE IS ALSO AN INCREASED RISK OF LOCALIZED FLOODING THIS MORNING
AS STORMS MOVE SLOWLY ACROSS THE WESTERN AND NORTHWEST PORTION OF
THE AREA. EXPECT AREAS TO RECEIVE 1 TO 2 INCHES OF RAIN WITH SOME
AREAS SEEING TOTALS NEAR 4 INCHES WHERE EVER TRAINING OF STORMS CAN
OCCUR. THE HEAVY RAIN AND FLOODING RISK SHOULD BE CONFINED TO THE
MORNING HOURS AS AFTERNOON STORMS ARE EXPECTED TO MOVE MORE RAPIDLY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH MONDAY

A COLD FRONT WILL STALL OVER THE NORTHERN PORTIONS OF THE AREA BY
THE END OF THE WEEK. AS SEVERAL UPPER LEVEL DISTURBANCES MOVE
THROUGH THE MOIST AND UNSTABLE AIRMASS...A FEW STORMS MAY APPROACH
SEVERE LIMITS. THE EXACT TIMING AND POSITION OF THE SYSTEM REMAIN
UNCERTAIN AT THIS TIME.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS...MAY BE NEEDED TODAY...THEN AGAIN SOMETIME DURING THE END
OF THE WEEK.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

CME
07

In the hours before

Special weather statement, Jul 9, 12:52 PM CDT, 2 hours 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1252 PM CDT MON JUL 9 2007

MSZ052-091835-
LAUDERDALE MS-
1252 PM CDT MON JUL 9 2007

...STRONG THUNDERSTORM LOCATED OVER WESTERN NEWTON COUNTY...

A STRONG THUNDERSTORM CAPABLE OF PRODUCING 40 TO 50 MPH WINDS WAS
LOCATED 4 MILES NORTH OF MEEHAN AT 1252 PM CDT...MOVING NORTHEAST AT
15 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS STORM. PONDING OF WATER ON ROADWAYS AND IN
LOW LYING AREAS WILL BE POSSIBLE.

PEOPLE IN LAUDERDALE COUNTY...INCLUDING THE CITIES OF LAUDERDALE...
MERIDIAN STATION AND MERIDIAN...SHOULD MONITOR THIS STORM CLOSELY.

CAW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 7:29 AM CDT	Flash Flood Warning	JAN	Sharkey, Washington	2 hr
Jul 9, 11:36 AM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Newton, Scott	39 min
Jul 9, 2:42 PM CDT	Severe Thunderstorm Warning	JAN	Warren	63 min
Jul 9, 3:41 PM CDT	Severe Thunderstorm Warning	JAN	Madison	49 min
Jul 9, 4:02 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Rankin	43 min
Jul 9, 4:11 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale, Newton	49 min
Jul 9, 5:52 PM CDT	Flash Flood Warning	JAN	Morehouse	113 min
Jul 9, 6:02 PM CDT	Severe Thunderstorm Warning	JAN	Richland	43 min
Jul 9, 4:26 PM CDT	Flash Flood Warning	JAN	Ashley	2 hr

Nearby

Severe Thunderstorm Warnings in Arkansas, 2007 Every severe thunderstorm warning 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.