Alert archive / Tennessee / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 327, NWS Memphis, TN

July 15, 20096 counties in Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Jul 15, 2009, 8:16 PM CDT for 6 counties in Tennessee. It was in force for 23 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 15, 2009, 8:16 PM CDT (01:16 UTC)
Expired
Jul 15, 2009, 8:39 PM CDT
In force
23 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon

Counties Carroll County, TN, Chester County, TN, Decatur County, TN, Hardin County, TN, Henderson County, TN, McNairy County, TN

The radar

The Memphis radar (KNQA), 136 km from the middle of the area, began a volume at 01:19 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
Jul 15, 6:03 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 1.3 hours before the alert went out and 161 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 2009-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4202 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 2009-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 square meters per square second.1939Sfc1 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
4202 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1288 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
60 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 Jul 15, 8:02 PM CDT, 14 minutes earlier.

Area forecast discussion, Jul 15, 8:02 PM CDT, 14 minutes before
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Hazardous weather outlook, Jul 15, 7:39 PM CDT, 37 minutes before
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In the hours before

Local storm report, Jul 15, 7:20 PM CDT, 56 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MEMPHIS TN
720 PM CDT WED JUL 15 2009

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

0525 PM     TSTM WND GST     MAYNARD                 36.42N 90.90W
07/15/2009  E60.00 MPH       RANDOLPH           AR   PUBLIC

0530 PM     TSTM WND DMG     CORNING                 36.41N 90.59W
07/15/2009                   CLAY               AR   UTILITY COMPANY

            SEVERAL TREES AND POWER LINES DOWN ACROSS RANDOLPH AND
            CLAY COUNTIES

0530 PM     TSTM WND DMG     E MAYNARD               36.42N 90.90W
07/15/2009                   RANDOLPH           AR   LAW ENFORCEMENT

            TREE DOWN ON ROAD AT THE JUNCTION OF HIGHWAY 328 AND 166

0550 PM     TSTM WND DMG     MALDEN                  36.58N 89.98W
07/15/2009                   DUNKLIN            MO   LAW ENFORCEMENT

            SEVERAL TREE LIMBS DOWN. LIGHT ROOF DAMAGE ACROSS TOWN.
            ONE AWNING DESTROYED.

0550 PM     TSTM WND DMG     OAK GROVE HEIGHTS       36.13N 90.52W
07/15/2009                   GREENE             AR   PUBLIC

            TOPS OF TREES GETTING SNAPPED OFF

0600 PM     TSTM WND GST     KENNETT                 36.24N 90.05W
07/15/2009  E60.00 MPH       DUNKLIN            MO   TRAINED SPOTTER

0608 PM     HAIL             6 N POCAHONTAS          36.35N 90.97W
07/15/2009  E0.88 INCH       RANDOLPH           AR   PUBLIC

0625 PM     TSTM WND GST     GOSNELL                 35.96N 89.97W
07/15/2009  E60.00 MPH       MISSISSIPPI        AR   TRAINED SPOTTER

            WINDS ESTIMATED AT 50 TO 60 MPH.

0630 PM     TSTM WND DMG     BLYTHEVILLE             35.93N 89.92W
07/15/2009                   MISSISSIPPI        AR   TRAINED SPOTTER

            SEVERAL TREES DOWN IN CITY

0638 PM     TSTM WND GST     10 SW TROY              36.24N 89.29W
07/15/2009  E60.00 MPH       OBION              TN   TRAINED SPOTTER

&&

JAB
Local storm report, Jul 15, 7:31 PM CDT, 45 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MEMPHIS TN
731 PM CDT WED JUL 15 2009

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

0525 PM     TSTM WND GST     MAYNARD                 36.42N 90.90W
07/15/2009  E60.00 MPH       RANDOLPH           AR   PUBLIC

0530 PM     TSTM WND DMG     E MAYNARD               36.42N 90.90W
07/15/2009                   RANDOLPH           AR   LAW ENFORCEMENT

            TREE DOWN ON ROAD AT THE JUNCTION OF HIGHWAY 328 AND 166

0530 PM     TSTM WND DMG     CORNING                 36.41N 90.59W
07/15/2009                   CLAY               AR   UTILITY COMPANY

            SEVERAL TREES AND POWER LINES DOWN ACROSS RANDOLPH AND
            CLAY COUNTIES

0550 PM     TSTM WND DMG     OAK GROVE HEIGHTS       36.13N 90.52W
07/15/2009                   GREENE             AR   PUBLIC

            TOPS OF TREES GETTING SNAPPED OFF

0550 PM     TSTM WND DMG     MALDEN                  36.58N 89.98W
07/15/2009                   DUNKLIN            MO   LAW ENFORCEMENT

            SEVERAL TREE LIMBS DOWN. LIGHT ROOF DAMAGE ACROSS TOWN.
            ONE AWNING DESTROYED.

0600 PM     TSTM WND GST     KENNETT                 36.24N 90.05W
07/15/2009  E60.00 MPH       DUNKLIN            MO   TRAINED SPOTTER

0608 PM     HAIL             6 N POCAHONTAS          36.35N 90.97W
07/15/2009  E0.88 INCH       RANDOLPH           AR   PUBLIC

0625 PM     TSTM WND GST     GOSNELL                 35.96N 89.97W
07/15/2009  E60.00 MPH       MISSISSIPPI        AR   TRAINED SPOTTER

            WINDS ESTIMATED AT 50 TO 60 MPH.

0630 PM     TSTM WND DMG     BLYTHEVILLE             35.93N 89.92W
07/15/2009                   MISSISSIPPI        AR   TRAINED SPOTTER

            SEVERAL TREES DOWN IN CITY

0638 PM     TSTM WND GST     10 SW TROY              36.24N 89.29W
07/15/2009  E60.00 MPH       OBION              TN   TRAINED SPOTTER

0700 PM     TSTM WND GST     2 W HALLS               35.87N 89.44W
07/15/2009  E60.00 MPH       LAUDERDALE         TN   FIRE DEPT/RESCUE

&&

JAB
Local storm report, Jul 15, 7:39 PM CDT, 37 minutes before
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Local storm report, Jul 15, 7:46 PM CDT, 30 minutes before
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Local storm report, Jul 15, 8:01 PM CDT, 15 minutes before
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Local storm report, Jul 15, 8:09 PM CDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 10:10 PM CDTSevere Thunderstorm WarningMEGAlcorn, Tippah50 min
Jul 16, 3:32 AM CDTHeat AdvisoryMEGCalhoun, Chickasaw, Coahoma, Lafayette, Panola, Pontotoc and 5 more6 hr
Jul 16, 7:40 AM CDTFlash Flood WarningMEGDeSoto, Marshall, Tate3 hr
Jul 16, 8:14 AM CDTFlash Flood WarningMEGCoahoma, Lafayette, Panola, Quitman, Tunica2 hr
Jul 16, 8:21 AM CDTSevere Thunderstorm WarningMEGBenton, Lafayette, Marshall, Panola, Pontotoc, Tate and 2 more39 min
Jul 16, 8:35 AM CDTFlash Flood WarningMEGAlcorn, Benton, Prentiss, Tippah, Union108 min
Jul 16, 8:39 AM CDTFlash Flood WarningMEGTishomingo99 min
Jul 16, 9:03 AM CDTSevere Thunderstorm WarningMEGLafayette, Lee, Marshall, Pontotoc, Prentiss, Union42 min
Jul 15, 7:00 PM CDTSevere Thunderstorm WarningMEGCarroll, Dyer, Gibson, Henry, Obion, Weakley45 min
Jul 15, 7:02 PM CDTSevere Thunderstorm WarningMEGCrockett, Dyer, Gibson, Haywood, Lauderdale58 min
Jul 15, 7:10 PM CDTSevere Thunderstorm WarningMEGDyer, Haywood, Lauderdale23 min
Jul 15, 7:20 PM CDTSevere Thunderstorm WarningMEGHaywood, Lauderdale, Tipton34 min
Jul 15, 7:22 PM CDTSevere Thunderstorm WarningMEGLauderdale, Tipton33 min
Jul 15, 7:24 PM CDTSevere Thunderstorm WarningMEGCarroll15 min
Jul 15, 7:35 PM CDTSevere Thunderstorm WarningMEGChester, Hardeman, Henderson, McNairy, Madison55 min
Jul 15, 7:40 PM CDTSevere Thunderstorm WarningMEGCarroll, Gibson, Henry, Weakley51 min
Jul 15, 7:43 PM CDTSevere Thunderstorm WarningMEGCarroll, Crockett, Gibson, Haywood, Henderson, Madison43 min
Jul 15, 7:57 PM CDTSevere Thunderstorm WarningMEGDecatur48 min
Jul 15, 8:01 PM CDTSevere Thunderstorm WarningMEGFayette, Hardeman, Haywood, Madison59 min
Jul 15, 8:09 PM CDTSevere Thunderstorm WarningMEGDecatur51 min
Jul 15, 8:25 PM CDTSevere Thunderstorm WarningMEGDecatur, Hardin, Henderson, McNairy65 min
Jul 15, 8:30 PM CDTSevere Thunderstorm WarningMEGChester, Hardeman, McNairy45 min
Jul 16, 1:43 AM CDTSevere Thunderstorm WarningMEGHaywood, Lauderdale, Tipton62 min
Jul 16, 2:06 AM CDTSevere Thunderstorm WarningMEGLauderdale39 min
Jul 16, 4:06 AM CDTFlash Flood WarningMEGLauderdale6 hr
Jul 16, 4:32 AM CDTFlash Flood WarningMEGLauderdale5 hr
Jul 16, 4:56 AM CDTFlash Flood WarningMEGTipton5 hr
Jul 16, 5:19 AM CDTFlash Flood WarningMEGShelby5 hr
Jul 16, 6:41 AM CDTFlash Flood WarningMEGShelby4 hr
Jul 16, 7:52 AM CDTAreal Flood AdvisoryMEGChester, Decatur, Hardeman, Hardin, Henderson, McNairy and 1 more2 hr
Jul 16, 8:04 AM CDTAreal Flood AdvisoryMEGFayette, Hardeman2 hr
Jul 16, 8:48 AM CDTAreal Flood AdvisoryMEGCrockett, Haywood93 min
Jul 16, 1:31 AM CDTSevere Thunderstorm WarningMEGMississippi31 min
Jul 16, 3:10 AM CDTSevere Thunderstorm WarningMEGMississippi19 min
Jul 16, 4:10 AM CDTAreal Flood AdvisoryMEGClay, Greene, Mississippi3 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 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.