Alert archive / Arkansas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 398, NWS Memphis, TN

August 5, 2009Clay County, Randolph County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Aug 5, 2009, 12:49 AM CDT for Clay County, Randolph County, Arkansas. It was in force for 41 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
Aug 5, 2009, 12:49 AM CDT (05:49 UTC)
Expired
Aug 5, 2009, 1:30 AM CDT
In force
41 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon

Counties Clay County, AR, Randolph County, AR

The radar

The Memphis radar (KNQA), 136 km from the middle of the area, began a volume at 05:51 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.

IssuedProductOfficeLasted
Aug 4, 11:11 PM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 5.8 hours before the alert went out and 183 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 00:00Z on 2009-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2116 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 00:00Z on 2009-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 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
2116 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
1606 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
150 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 Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 5, 12:44 AM CDT, 5 minutes earlier.

Area forecast discussion, Aug 5, 12:44 AM CDT, 5 minutes before
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Hazardous weather outlook, Aug 4, 11:25 PM CDT, 1 hour 24 minutes before
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In the hours before

Local storm report, Aug 4, 8:16 PM CDT, 4 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MEMPHIS TN
816 PM CDT TUE AUG 04 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0729 PM     HAIL             PURYEAR                 36.44N 88.33W
08/04/2009  E0.75 INCH       HENRY              TN   PUBLIC

0751 PM     TSTM WND DMG     PARIS                   36.30N 88.31W
08/04/2009                   HENRY              TN   LAW ENFORCEMENT

            SEVERAL LARGE TREES AND POWER POLES DOWN IN THE CITY OF
            PARIS

0759 PM     TSTM WND GST     7 ESE HENRY             36.16N 88.29W
08/04/2009  E60.00 MPH       HENRY              TN   TRAINED SPOTTER

0804 PM     TSTM WND DMG     MCKENZIE                36.14N 88.51W
08/04/2009                   CARROLL            TN   EMERGENCY MNGR

            TREES AND POWER LINES DOWN

0810 PM     TSTM WND DMG     HUNTINGDON              36.01N 88.41W
08/04/2009                   CARROLL            TN   EMERGENCY MNGR

            TREES AND POWER LINES DOWN

&&

DSV
Local storm report, Aug 4, 9:11 PM CDT, 3 hours 38 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MEMPHIS TN
911 PM CDT TUE AUG 04 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0729 PM     HAIL             PURYEAR                 36.44N 88.33W
08/04/2009  E0.75 INCH       HENRY              TN   PUBLIC

0751 PM     TSTM WND DMG     PARIS                   36.30N 88.31W
08/04/2009                   HENRY              TN   LAW ENFORCEMENT

            SEVERAL LARGE TREES AND POWER POLES DOWN IN THE CITY OF
            PARIS

0759 PM     TSTM WND GST     7 ESE HENRY             36.16N 88.29W
08/04/2009  E60.00 MPH       HENRY              TN   TRAINED SPOTTER

0804 PM     TSTM WND DMG     MCKENZIE                36.14N 88.51W
08/04/2009                   CARROLL            TN   EMERGENCY MNGR

            TREES AND POWER LINES DOWN

0810 PM     TSTM WND DMG     HUNTINGDON              36.01N 88.41W
08/04/2009                   CARROLL            TN   EMERGENCY MNGR

            TREES AND POWER LINES DOWN

0840 PM     TSTM WND GST     10 NNE PARSONS          35.79N 88.06W
08/04/2009  E60.00 MPH       DECATUR            TN   PUBLIC

            BLEW 2 LARGE TRASH BINS END OVER END ACROSS PARKING LOT
            AT GAS STATION IN SUGAR TREE TENNESSEE

&&

DSV
Special weather statement, Aug 4, 9:14 PM CDT, 3 hours 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
914 PM CDT TUE AUG 4 2009

TNZ001>004-050300-
HENRY TN-WEAKLEY TN-LAKE TN-OBION TN-
914 PM CDT TUE AUG 4 2009

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

  HENRY COUNTY IN NORTHWEST TENNESSEE...
  EXTREME NORTHEASTERN LAKE COUNTY IN NORTHWEST TENNESSEE...
  OBION COUNTY IN NORTHWEST TENNESSEE...
  WEAKLEY COUNTY IN NORTHWEST TENNESSEE...

A LINE OF STRONG THUNDERSTORMS PRODUCING 40 TO 50 MPH WINDS WAS
LOCATED FROM 19 MILES NORTHWEST OF PARIS LANDING STATE PARK TO 4
MILES SOUTHEAST OF CLAYTON AT 915 PM CDT...MOVING SOUTHEAST AT 50
MPH.

PEOPLE IN HENRY...LAKE...OBION AND WEAKLEY COUNTIES...INCLUDING
LOCATIONS NEAR MARTIN...PARIS LANDING STATE PARK...PARIS AND UNION
CITY...SHOULD MONITOR THIS STORM CLOSELY THIS SIGNIFICANT WEATHER
ALERT IS IN EFFECT UNTIL 1000 PM CDT.

.A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT FOR THE ALERT
AREA.
Local storm report, Aug 4, 11:16 PM CDT, 1 hour 33 minutes before
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Local storm report, Aug 4, 11:30 PM CDT, 1 hour 19 minutes before
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Local storm report, Aug 5, 12:26 AM CDT, 23 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 3:19 AM CDTSevere Thunderstorm WarningMEGTunica56 min
Aug 4, 7:03 PM CDTSevere Thunderstorm WarningMEGHenry, Obion, Weakley42 min
Aug 4, 7:06 PM CDTFlash Flood WarningMEGHenry, Obion, Weakley3 hr
Aug 4, 7:34 PM CDTSevere Thunderstorm WarningMEGCarroll, Henry, Weakley41 min
Aug 4, 7:38 PM CDTFlash Flood WarningMEGCarroll, Henry, Weakley3 hr
Aug 4, 7:43 PM CDTSevere Thunderstorm WarningMEGHenry, Weakley47 min
Aug 4, 8:09 PM CDTSevere Thunderstorm WarningMEGCarroll, Decatur, Henderson66 min
Aug 4, 9:34 PM CDTSevere Thunderstorm WarningMEGLake, Obion56 min
Aug 4, 9:38 PM CDTSevere Thunderstorm WarningMEGCarroll, Gibson, Henry, Obion, Weakley67 min
Aug 4, 10:05 PM CDTTornado WarningMEGCarroll, Gibson, Obion, Weakley22 min
Aug 4, 10:10 PM CDTFlash Flood WarningMEGCarroll, Decatur, Gibson, Henry, Lake, Obion and 1 more3 hr
Aug 4, 10:14 PM CDTTornado WarningMEGCarroll, Henderson46 min
Aug 4, 10:16 PM CDTSevere Thunderstorm WarningMEGDyer, Lake44 min
Aug 4, 10:39 PM CDTSevere Thunderstorm WarningMEGCarroll, Decatur, Henderson51 min
Aug 4, 11:00 PM CDTSevere Thunderstorm WarningMEGDyer, Lake45 min
Aug 5, 12:02 AM CDTSevere Thunderstorm WarningMEGDyer, Lauderdale30 min
Aug 4, 11:12 PM CDTSevere Thunderstorm WarningMEGClay63 min
Aug 4, 11:32 PM CDTSevere Thunderstorm WarningMEGClay, Greene, Randolph43 min
Aug 4, 11:56 PM CDTSevere Thunderstorm WarningMEGMississippi37 min
Aug 5, 12:41 AM CDTFlash Flood WarningMEGClay, Greene, Randolph3 hr
Aug 5, 2:05 AM CDTFlash Flood WarningMEGCraighead, Lawrence, Poinsett3 hr
Aug 5, 2:47 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Mississippi, Poinsett, St. Francis43 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2009Every severe thunderstorm warning in 2009

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.