Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Memphis, TN

May 9, 2021Coahoma County, Quitman County, Mississippi

NWS Memphis, TN issued this special weather statement at May 9, 2021, 7:21 PM CDT for Coahoma County, Quitman County, Mississippi. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 9, 2021, 7:21 PM CDT (00:21 UTC)
Expired
May 9, 2021, 7:45 PM CDT
In force
24 min
Issued by
NWS Memphis, TN

Counties Coahoma County, MS, Quitman County, MS

The radar

The Little Rock radar (KLZK), 144 km from the middle of the area, began a volume at 00:23 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 00:00Z, 0.4 hours before the alert went out and 111 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 2021-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 762 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2021-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -37 square meters per square second.19395878Sfc1 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
762 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
787 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
-37 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted.

534 
WWUS84 KMEG 100021
SPSMEG

Special Weather Statement
National Weather Service Memphis TN
721 PM CDT Sun May 9 2021
 
ARZ058-MSZ010-011-020-100045-
Phillips AR-Coahoma MS-Tallahatchie MS-Quitman MS-
721 PM CDT Sun May 9 2021

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 745 PM CDT
FOR...

Southern Phillips County in eastern Arkansas...
Coahoma County in northwestern Mississippi...
Northwestern Tallahatchie County in northwestern Mississippi...
Southern Quitman County in northwestern Mississippi...

At 720 PM CDT...a strong thunderstorm producing pea size hail or 
larger and winds 40 mph or greater was located near Elaine, moving 
east at 50 mph.

Very heavy rain along with continuous cloud to ground lightning are
also possible with this thunderstorm.

People in southern Phillips...Coahoma...northwestern Tallahatchie and
southern Quitman Counties should monitor this storm closely.

LAT...LON 3420 9109 3420 9108 3422 9106 3424 9107
      3425 9108 3425 9106 3427 9107 3444 9078
      3430 9021 3399 9039 3406 9066 3412 9066
      3412 9092 3416 9109
TIME...MOT...LOC 0020Z 281DEG 42KT 3424 9091 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 7:05 PM CDTSevere Thunderstorm WarningMEGChickasaw, Lafayette, Lee, Pontotoc, Union40 min
May 9, 7:18 PM CDTSevere Thunderstorm WarningMEGCalhoun, Chickasaw, Yalobusha27 min
May 9, 7:28 PM CDTSpecial Weather StatementMEGTishomingo32 min
May 9, 7:28 PM CDTSevere Thunderstorm WarningMEGChickasaw, Itawamba, Lee, Monroe, Pontotoc, Union67 min
May 9, 7:44 PM CDTSevere Thunderstorm WarningMEGTishomingo16 min
May 9, 7:45 PM CDTAreal Flood AdvisoryMEGCoahoma, Panola, Quitman, Tallahatchie2 hr

Nearby

Special Weather Statements in Mississippi, 2021Every special weather statement in 2021

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.