Alert archive / Mississippi / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 182, NWS Memphis, TN

July 20, 2000Itawamba County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Jul 20, 2000, 4:16 PM CDT for Itawamba County, Mississippi. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 20, 2000, 4:16 PM CDT (21:16 UTC)
Expired
Jul 20, 2000, 4:35 PM CDT
In force
19 min
Issued by
NWS Memphis, TN
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Itawamba County, MS

The watch it was issued in

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

IssuedProductOfficeLasted
Jul 20, 4:00 PM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 9.3 hours before the alert went out and 173 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 2000-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1974 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 2000-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
1974 J/kg
Mixed-layer CIN
-184 J/kg
Mixed-layer LCL
1232 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KMEG 202117
SVRMEM
MSC057-202135-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
416 PM CDT THU JUL 20 2000

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ITAWAMBA COUNTY IN NORTHEAST MISSISSIPPI

* UNTIL 435 PM CDT

* AT 415 PM CDT...WEATHER RADAR INDICATED A SEVERE THUNDERSTORM OVER
  TREMONT...MOVING EAST AT 35 MPH.

* CITIES IN THE PATH OF bTHIS STORM THROUGH 430 PM CDT INCLUDE...
  TREMONT...

.DAMAGING WINDS IN EXCESS OF 60 MPH ARE LIKELY WITH THIS STORM. IF 
YOU ARE IN THE PATH OF THIS STORM...MOVE INDOORS.

LAT...LON 3435 8841 3417 8841 3415 8784 3437 8784

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 2:01 PM CDTSevere Thunderstorm WarningMEGDeSoto, Marshall29 min
Jul 20, 2:31 PM CDTSevere Thunderstorm WarningMEGBenton, Tippah29 min
Jul 20, 2:59 PM CDTSevere Thunderstorm WarningMEGAlcorn, Tippah46 min
Jul 20, 3:22 PM CDTSevere Thunderstorm WarningMEGItawamba, Lee, Prentiss23 min
Jul 20, 3:35 PM CDTSevere Thunderstorm WarningMEGTishomingo25 min
Jul 20, 3:43 PM CDTSevere Thunderstorm WarningMEGItawamba, Lee32 min
Jul 20, 4:11 PM CDTSevere Thunderstorm WarningMEGMonroe34 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2000Every severe thunderstorm warning in 2000

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.