Alert archive / Arkansas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 138, NWS Memphis, TN

April 10, 2008Lawrence County, Randolph County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Apr 10, 2008, 4:15 AM CDT for Lawrence County, Randolph County, Arkansas. It was in force for 45 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: Apr 10, 2008, 4:15 AM CDT (09:15 UTC)
Expired: Apr 10, 2008, 5:00 AM CDT
In force: 45 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

Counties Lawrence County, AR, Randolph County, AR

The radar

The Memphis radar (KNQA), 143 km from the middle of the area, began a volume at 09:16 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 10, 3:28 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 9.3 hours before the alert went out and 182 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: 168 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 627 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 324 m²/s²
0-3 km storm-relative helicity: 404 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

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 Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 9, 8:24 PM CDT, 7 hours 51 minutes earlier.

Area forecast discussion, Apr 9, 8:24 PM CDT, 7 hours 51 minutes before

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Hazardous weather outlook, Apr 9, 3:35 PM CDT, 12 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEMPHIS TN
335 PM CDT WED APR 9 2008

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-102245-
ALCORN-BENTON MS-CALHOUN-CARROLL-CHESTER-CHICKASAW-CLAY-COAHOMA-
CRAIGHEAD-CRITTENDEN-CROCKETT-CROSS-DESOTO-DECATUR-DUNKLIN-DYER-
FAYETTE-GIBSON-GREENE-HARDEMAN-HARDIN-HAYWOOD-HENDERSON-HENRY-
ITAWAMBA-LAFAYETTE-LAKE-LAUDERDALE-LAWRENCE-LEE AR-LEE MS-MADISON-
MARSHALL-MCNAIRY-MISSISSIPPI-MONROE-OBION-PANOLA-PEMISCOT-
PHILLIPS-POINSETT-PONTOTOC-PRENTISS-QUITMAN-RANDOLPH-SHELBY-
ST. FRANCIS-TALLAHATCHIE-TATE-TIPPAH-TIPTON-TISHOMINGO-TUNICA-
UNION-WEAKLEY-YALOBUSHA-
335 PM CDT WED APR 9 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS...
THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE.

.DAY ONE...TONIGHT

NO WIDESPREAD HAZARDOUS WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A SIGNIFICANT SEVERE WEATHER OUTBREAK IS LIKELY THURSDAY AFTERNOON
INTO EARLY FRIDAY MORNING. A POWERFUL STORM SYSTEM WILL MOVE ACROSS THE
AREA AND BRING THE POTENTIAL FOR WIDESPREAD DAMAGING WINDS...LARGE
HAIL...AND TORNADOES. A FEW STRONG TORNADOES WILL ALSO BE
POSSIBLE. THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE WESTERN
HALF OF THE MID SOUTH THURSDAY AFTERNOON AND MOVE ACROSS THE
REMAINDER OF THE FORECAST AREA THURSDAY NIGHT INTO EARLY FRIDAY
MORNING. THIS SHOULD BE A SIGNIFICANT AND WIDESPREAD SEVERE WEATHER
EVENT FOR MUCH OF THE AREA.

HEAVY RAINFALL WILL ALSO OCCUR WITH THUNDERSTORMS MOVING ACROSS
THE AREA. THESE STORMS WILL LIKELY PRODUCE RAINFALL AMOUNTS
BETWEEN 1 AND 2 INCHES...WITH ISOLATED HIGHER AMOUNTS. THIS MAY
LEAD TO FLASH FLOODING AND ADDITIONAL RIVER FLOODING LATE THURSDAY
AFTERNOON INTO FRIDAY MORNING.

VERY WINDY CONDITIONS CAN ALSO BE EXPECTED ON THURSDAY AND
THURSDAY NIGHT AHEAD OF THE APPROACHING STORM SYSTEM. SUSTAINED
WINDS BETWEEN 20 AND 30 MPH...WITH GUSTS OVER 40 MPH WILL BE
POSSIBLE. A WIND ADVISORY WILL LIKELY BE ISSUED FOR THURSDAY AND
THURSDAY NIGHT FOR MUCH OF THE MID SOUTH.

TEMPERATURES MAY DROP TO NEAR FREEZING ACROSS PORTIONS OF THE MID
SOUTH SUNDAY MORNING AND POSSIBLY MONDAY MORNING. THIS MAY IMPACT
TENDER VEGETATION THAT IS LEFT UNPROTECTED.

.SPOTTER INFORMATION STATEMENT...

THE ACTIVATION OF STORM SPOTTERS...EMERGENCY MANAGERS...AND LAW
ENFORCEMENT OFFICIALS IN SUPPORT OF SEVERE WEATHER OPERATIONS WILL
BE NEEDED THURSDAY AFTERNOON THROUGH FRIDAY MORNING ACROSS THE
ENTIRE MIDSOUTH.

In the hours before

Special weather statement, Apr 10, 3:41 AM CDT, 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
341 AM CDT THU APR 10 2008

ARZ008-017-100945-
RANDOLPH AR-LAWRENCE AR-
341 AM CDT THU APR 10 2008

...THIS SIGNIFICANT WEATHER ALERT IS FOR...

  LAWRENCE COUNTY IN EASTERN ARKANSAS...
  RANDOLPH COUNTY IN EASTERN ARKANSAS...

A LINE OF STRONG THUNDERSTORMS PRODUCING PEA TO DIME SIZE HAIL AND 40
TO 50 MPH WINDS WAS LOCATED FROM 19 MILES NORTHWEST OF RAVENDEN
SPRINGS TO 21 MILES WEST OF STRAWBERRY AT 341 AM CDT...MOVING EAST AT
30 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS THUNDERSTORM.

THESE STORMS ARE INTENSIFYING AND COULD BECOME SEVERE RAPIDLY.

PEOPLE IN LAWRENCE AND RANDOLPH COUNTIES...INCLUDING THE CITIES OF
BLACK ROCK...HOXIE...POCAHONTAS AND WALNUT RIDGE...SHOULD MONITOR
THIS STORM CLOSELY..

.A TORNADO WATCH ALSO REMAINS IN EFFECT FOR THE ALERT AREA.

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 10, 4:49 AM CDT	Wind Advisory	MEG	Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more	17 hr
Apr 10, 5:17 PM CDT	Severe Thunderstorm Warning	MEG	Lauderdale, Tipton	28 min
Apr 10, 4:55 AM CDT	Severe Thunderstorm Warning	MEG	Lawrence, Randolph	50 min
Apr 10, 5:00 AM CDT	Flash Flood Warning	MEG	Lawrence, Randolph	115 min
Apr 10, 5:39 AM CDT	Severe Thunderstorm Warning	MEG	Clay, Randolph	51 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2008 Every severe thunderstorm warning in 2008

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.