Alert archive / Arkansas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 288, NWS Memphis, TN

June 9, 2008Lawrence County, Randolph County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Jun 9, 2008, 4:26 PM CDT for Lawrence County, Randolph County, Arkansas. It was in force for 49 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
Jun 9, 2008, 4:26 PM CDT (21:26 UTC)
Expired
Jun 9, 2008, 5:15 PM CDT
In force
49 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 21:26 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

Little Rock, AR (KLZK), launched 12:00Z, 9.4 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-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2008-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 516 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, Little Rock, AR at 12:00Z on 2008-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -46 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
516 J/kg
Mixed-layer CIN
-125 J/kg
Mixed-layer LCL
1253 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-46 m²/s²
0-3 km storm-relative helicity
-1 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 Jun 9, 3:52 PM CDT, 34 minutes earlier.

Area forecast discussion, Jun 9, 3:52 PM CDT, 34 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEMPHIS TN
352 PM CDT MON JUN 9 2008

.DISCUSSION...
IT APPEARS THAT THE MIDSOUTH WILL BREAK FREE OF THE RECENT HOT DRY
SPELL LATE IN THE WEEK. FIRST FORECAST CONCERN IS THUNDERSTORM
CHANCES TONIGHT.

MIDAFTERNOON GOES WATER VAPOR IMAGERY SHOWED AN OPEN TROF
EXTENDING FROM ND...SOUTH THROUGH CENTRAL TX. A SHORTWAVE LOBE OF
ENERGY WAS EVIDENT OVER KS...LIFTING EAST TOWARD MO. THE REMNANTS
OF AN OVERNIGHT MCS OVER OK NEVER COMPLETELY DISSIPATED TODAY...AND
HAS REFIRED OVER THE OUACHITA MOUNTAINS OF SOUTHEAST OK AND
WESTERN AR. THE AIRMASS AHEAD OF THESE THUNDERSTORMS WAS
MODERATELY UNSTABLE OVER SOUTHERN AND CENTRAL AR...WITH SURFACE
BASED CAPES OT 2000 TO 2500 J/KG. OVER THE MIDSOUTH...CAPES WERE
GENERALLY NEAR 1500 J/K. MODERATELY WARM MIDLEVEL TEMPS...AROUND 8C
AT 700MB...WERE SUPPRESSING MOST...THOUGH NOT ALL...DEEP CONVECTION
IN THE ABSENCE OF STRONG LOW LEVEL FORCING.

THE MIDSOUTH WILL SEE A SLIGHT RISK OF SEVERE THUNDERSTORMS WEST OF
THE MS RIVER AND OVER FAR NORTHWEST TN THIS EVENING...AS THE COLD
POOL INTERCEPTS THE WARM AND CONDITIONALLY UNSTABLE AIRMASS.
GREATEST SEVERE THREAT EXPECTED OVER NORTHEAST ARKANSAS...THROUGH
SUNSET. EXPECT A GRADUAL WEAKENING AND DECREASING COVERAGE TREND
OVER THE MIDSOUTH LATE TONIGHT...AS THE LOW LEVELS GRADUALLY
STABILIZE AND THE SHORTWAVE LIFTS FROM KS TO THE GREAT LAKES.
EXPECT THE SOUTHERN END OF THIS SHORTWAVE MAY BE SHEARED/WEAKENED
SOME AS IT ENCOUNTERS EASTERLY FLOW BROUGHT IN BY WEAK TROPICAL
UPPER LOW OVER FL.

TUESDAY WILL SEE A THE MAIN CONVECTIVE BOUNDARY / FRONT STALLED
OVER THE MIDSOUTH UNDER WEAK UPPER FLOW. THE EASTERLY FLOW SHOULD
RESULT IN DEEPER MOISTURE AND WEAKER CONVECTIVE INHIBITION OVER
NORTHEAST MS AND THE TN RIVER VALLEY TUESDAY AFTERNOON...MUCH AS
IT HAS TODAY OVER SOUTHWEST AL/SOUTHEAST MS. TROPICAL MOISTURE
AND WEAK EAST/SOUTHEAST MIDLEVEL FLOW WILL SPREAD A BIT FURTHER
INTO THE MIDSOUTH ON WEDNESDAY...RESULTING IN DIURNAL ISOLATED
SHOWERS AND THUNDERSTORMS...MAINLY EAST AND SOUTHEAST OF MEMPHIS.

THURSDAY THROUGH SATURDAY WILL SEE A BROAD UPPER LEVEL TROF CROSS
THE CENTRAL AND NORTHERN TIER STATES...EVENTUALLY RESULTING IN
NORTHWEST FLOW ALOFT OVER THE MIDSOUTH BY THE WEEKEND. BOTH GFS AND
ECMWF BRING A MIDLEVEL SHORTWAVE AND ASSOCIATED SURFACE FRONT
THROUGH THE MIDSOUTH LATE FRIDAY/EARLY SATURDAY.

UNDER NORTHWEST FLOW ALOFT...DRY AND COOLER CONTINENTAL SURFACE
HIGH PRESSURE WILL SETTLE INTO THE MIDSOUTH THIS WEEKEND...PUSHING
THE WARM AND MORE HUMID AIR TO NEAR THE COAST. GFS HAS BEEN QUITE
CONSISTENT IN RECENT RUNS IS WELL CORROBORATED BY THE 12Z ECMWF IN
THE EXTENDED PERIODS...LEADING TO BETTER THAN AVERAGE FORECAST
CONFIDENCE.

PWB

&&

.PRELIMINARY POINT TEMPS/POPS...
MEM  72  91  74  93 /  60  20  10  20
MKL  70  88  67  91 /  50  20  10  20
JBR  70  90  71  93 /  60  10  10  10
TUP  71  90  70  90 /  30  30  20  30

&&

.MEG WATCHES/WARNINGS/ADVISORIES...
AR...NONE.
MO...NONE.
MS...NONE.
TN...NONE.
&&
Hazardous weather outlook, Jun 9, 2:55 PM CDT, 1 hour 31 minutes before
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In the hours before

Special weather statement, Jun 9, 1:32 PM CDT, 2 hours 54 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
132 PM CDT MON JUN 9 2008

ARZ008-009-091915-
CLAY AR-RANDOLPH AR-
132 PM CDT MON JUN 9 2008

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

  NORTHWESTERN CLAY COUNTY IN EASTERN ARKANSAS...
  EASTERN RANDOLPH COUNTY IN EASTERN ARKANSAS...

A STRONG THUNDERSTORM PRODUCING PEA TO DIME SIZE HAIL AND 40 TO 50
MPH WINDS WAS LOCATED 5 MILES SOUTHWEST OF BIGGERS AT 132 PM CDT...
MOVING NORTHEAST AT 24 MPH.

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

THIS STORM IS INTENSIFYING AND COULD BECOME SEVERE RAPIDLY.

PEOPLE IN CLAY AND RANDOLPH COUNTIES...INCLUDING THE CITY OF
CORNING...SHOULD MONITOR THIS STORM CLOSELY..

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 4:42 PM CDTSevere Thunderstorm WarningMEGLawrence, Randolph48 min
Jun 9, 5:14 PM CDTSevere Thunderstorm WarningMEGClay, Greene, Randolph46 min
Jun 9, 5:29 PM CDTSevere Thunderstorm WarningMEGRandolph16 min
Jun 9, 5:45 PM CDTSevere Thunderstorm WarningMEGCraighead, Mississippi35 min
Jun 9, 6:04 PM CDTSevere Thunderstorm WarningMEGCross41 min
Jun 9, 6:25 PM CDTSevere Thunderstorm WarningMEGClay, Greene27 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2008Every 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.