Alert archive / Mississippi / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 202, NWS Memphis, TN

April 20, 2006Monroe County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Apr 20, 2006, 4:14 PM CDT for Monroe County, Mississippi. It was in force for 31 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 20, 2006, 4:14 PM CDT (21:14 UTC)
Expired
Apr 20, 2006, 4:45 PM CDT
In force
31 min
Issued by
NWS Memphis, TN
Area
Counties, with a storm outline in the text

County Monroe County, MS

The radar

The Columbus AFB radar (KGWX), 14 km from the middle of the area, began a volume at 21:16 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.

IssuedProductOfficeLasted
Apr 20, 2:15 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 9.2 hours before the alert went out and 171 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 2006-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2006-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -159 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
950 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-159 m²/s²
0-3 km storm-relative helicity
-33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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 20, 3:29 PM CDT, 45 minutes earlier.

Area forecast discussion, Apr 20, 3:29 PM CDT, 45 minutes before
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Hazardous weather outlook, Apr 20, 3:52 PM CDT, 22 minutes before
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In the hours before

Special weather statement, Apr 20, 10:29 AM CDT, 5 hours 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1029 AM CDT THU APR 20 2006

TNZ055-201600-
DECATUR TN-
1029 AM CDT THU APR 20 2006

THIS SIGNIFICANT WEATHER ADVISORY IS FOR...DECATUR COUNTY.

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED 6 MILES SOUTHWEST OF DECATURVILLE AT
1029 AM CDT...MOVING NORTHEAST AT 40 MPH.

THIS STORM IS INTENSIFYING AND COULD BECOME SEVERE RAPIDLY.

PEOPLE IN DECATUR COUNTY SHOULD MONITOR THIS STORM CLOSELY.
Local storm report, Apr 20, 10:57 AM CDT, 5 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MEMPHIS TN
1057 AM CDT THU APR 20 2006

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

0808 AM     HAIL             BARTLETT                35.22N 89.84W
04/20/2006  M0.75 INCH       SHELBY             TN   TRAINED SPOTTER

0808 AM     HAIL             BARTLETT                35.22N 89.84W
04/20/2006  M1.00 INCH       SHELBY             TN   TRAINED SPOTTER

0812 AM     HAIL             1 N BELMONT             34.52N 88.21W
04/20/2006  M0.75 INCH       TISHOMINGO         MS   EMERGENCY MNGR

0815 AM     HAIL             1 S TISHOMINGO          34.62N 88.23W
04/20/2006  M0.88 INCH       TISHOMINGO         MS   LAW ENFORCEMENT

0906 AM     HAIL             MEDON                   35.46N 88.87W
04/20/2006  M0.88 INCH       MADISON            TN   FIRE DEPT/RESCUE

1042 AM     HAIL             SALTILLO                34.38N 88.69W
04/20/2006  M1.00 INCH       LEE                MS   LAW ENFORCEMENT

1043 AM     HAIL             SALTILLO                34.38N 88.69W
04/20/2006  M0.88 INCH       LEE                MS   TRAINED SPOTTER

1051 AM     HAIL             SALTILLO                34.38N 88.69W
04/20/2006  M1.50 INCH       LEE                MS   LAW ENFORCEMENT

&&

AARON
Special weather statement, Apr 20, 3:56 PM CDT, 18 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 20, 5:29 AM CDTSevere Thunderstorm WarningMEGDecatur19 min
Apr 20, 8:02 AM CDTSevere Thunderstorm WarningMEGShelby23 min
Apr 20, 8:30 AM CDTSevere Thunderstorm WarningMEGFayette15 min
Apr 20, 8:35 AM CDTSevere Thunderstorm WarningMEGHardeman25 min
Apr 20, 9:05 AM CDTSevere Thunderstorm WarningMEGMadison40 min
Apr 20, 8:01 AM CDTSevere Thunderstorm WarningMEGTishomingo29 min
Apr 20, 10:33 AM CDTSevere Thunderstorm WarningMEGLee27 min
Apr 20, 10:58 AM CDTSevere Thunderstorm WarningMEGItawamba32 min
Apr 20, 4:45 PM CDTSevere Thunderstorm WarningMEGMonroe45 min
Apr 20, 8:29 AM CDTSevere Thunderstorm WarningMEGPhillips33 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2006Every severe thunderstorm warning in 2006

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.