Alert archive / Mississippi / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 224, NWS Memphis, TN

June 24, 2018DeSoto County, Tate County, Tunica County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Jun 24, 2018, 2:27 AM CDT for DeSoto County, Tate County, Tunica County, Mississippi. It was in force for 48 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: Jun 24, 2018, 2:27 AM CDT (07:27 UTC)
Expired: Jun 24, 2018, 3:15 AM CDT
In force: 48 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties DeSoto County, MS, Tate County, MS, Tunica County, MS

The radar

The Memphis radar (KNQA), 72 km from the middle of the area, began a volume at 07:30 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 (KBYH), launched 00:00Z, 7.5 hours before the alert went out and 18 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1020 J/kg
Mixed-layer CIN: -199 J/kg
Mixed-layer LCL: 1488 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 Jun 23, 11:48 PM CDT, 2 hours 39 minutes earlier.

Area forecast discussion, Jun 23, 11:48 PM CDT, 2 hours 39 minutes before

Area Forecast Discussion
National Weather Service Memphis TN
1148 PM CDT Sat Jun 23 2018

.UPDATE...

Updated to include 06z aviation discussion.

&&

.PREV DISCUSSION... /issued 301 PM CDT Sat Jun 23 2018/

DISCUSSION...

Most of the region recovering from morning convection with cu
fields on satellite across the north and far south where the area
was untouched from precipitation. Temperatures still cool along
the Tennessee River with readings around 80F...hotter in the west
with near 90F temperatures in the southwest Delta. Winds were
breezy from the south in the wake of the morning storms as well.

Tricky next 24 hours with regards to convection timing. Latest HRRR
showing a few storms popping up early this evening over north
Mississippi that may train through the night with little to no
activity farther north until tomorrow. However...models from
yesterday and Thursday were in strong agreement of organized
convection sliding across the northern counties in the 06-12z
time frame. So have split the difference with 40-50 pops across
much of the region tonight. Temperatures tomorrow will be
near average. Storms may still be lingering across the north
tomorrow night where the midlevel westerlies remain strongest.

Monday through Wednesday...next shortwave to drop into the Plains
and evolve into an upper low is anticipated this period. The GFS
shows the entire Midsouth remaining in an active convective
swath...while the NAM and Euro focus storms in the north and
east with the southwest starting to heat up. Have leaned more
with this NAM and Euro consistency. Temperatures will range from
89F to the northeast to 95F in the southwest...with triple digit
heat indices building in. Heat advisories are possible for
portions of the area.

End of next week...both the GFS and Euro show the ridge building
even further over the Central States. Widespread mid 90's will be
the rule with a few upper 90's possible in the west. Heat indices
in the 103F-109F range...so heat advisories will be likely.

JAB

&&

.AVIATION...
06z TAF Cycle

Lower ceilings are possible during the overnight period, with low
level moisture advecting with southerly winds ahead of an MCS
which will approach the region by the late morning hours. Handled
the lower ceilings with a TEMPO, based on trends currently at KMEM
where ceilings have already lowered. Some fog will also be
possible, primarily at KMKL where MVFR conditions have been
prevailed.

Winds will be out of the SSW for much of the period, generally
less than 10 knots. Models still indicate an MCS to move through
the region after around 14z from the west. Included VCTS for now,
as confidence remains low on exact timing. Conditions will recover
back to VFR by late in the period.

ZDM

&&

.MEG WATCHES/WARNINGS/ADVISORIES...
AR...None.
MO...None.
MS...None.
TN...None.
&&

Hazardous weather outlook, Jun 23, 3:00 PM CDT, 11 hours 27 minutes before

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In the hours before

Special weather statement, Jun 23, 8:30 PM CDT, 5 hours 57 minutes before

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Special weather statement, Jun 24, 1:31 AM CDT, 56 minutes before

Special Weather Statement
National Weather Service Memphis TN
131 AM CDT SUN JUN 24 2018

ARZ036-049-MSZ001-007-008-240715-
Lee AR-Crittenden AR-Tunica MS-DeSoto MS-Tate MS-
131 AM CDT SUN JUN 24 2018

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 215 AM CDT
FOR...

Northeastern Lee County in eastern Arkansas...
South central Crittenden County in eastern Arkansas...
Northern Tunica County in northwestern Mississippi...
Western DeSoto County in northwestern Mississippi...
Northwestern Tate County in northwestern Mississippi...

At 130 AM CDT...a strong thunderstorm producing pea size hail or
larger and winds at least 40 mph was located 7 miles west of
Robinsonville, or 10 miles south of Hughes, moving east at 20 mph.

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

People in northeastern Lee...south central Crittenden...northern
Tunica...western DeSoto and northwestern Tate Counties should monitor
this storm closely.

LAT...LON 3489 9052 3491 9042 3490 9041 3491 9041
      3497 9005 3467 9004 3474 9052
TIME...MOT...LOC 0630Z 265DEG 18KT 3479 9044

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 8:30 PM CDT	Special Weather Statement	MEG	Hardin	30 min
Jun 24, 4:18 AM CDT	Severe Thunderstorm Warning	MEG	Lauderdale, Tipton	42 min
Jun 24, 4:21 AM CDT	Special Weather Statement	MEG	Shelby	39 min
Jun 24, 4:37 AM CDT	Severe Thunderstorm Warning	MEG	Fayette, Shelby, Tipton	38 min
Jun 24, 5:47 AM CDT	Areal Flood Advisory	MEG	Shelby	118 min
Jun 24, 6:24 AM CDT	Special Weather Statement	MEG	Shelby	51 min
Jun 24, 6:30 AM CDT	Special Weather Statement	MEG	Henderson	30 min
Jun 24, 6:57 AM CDT	Severe Thunderstorm Warning	MEG	Fayette, Shelby	48 min
Jun 24, 7:14 AM CDT	Special Weather Statement	MEG	Fayette	46 min
Jun 24, 7:18 AM CDT	Flash Flood Warning	MEG	Fayette, Shelby	72 min
Jun 24, 1:31 AM CDT	Special Weather Statement	MEG	Tunica	44 min
Jun 24, 1:46 AM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Tate, Tunica	44 min
Jun 24, 3:14 AM CDT	Special Weather Statement	MEG	DeSoto	46 min
Jun 24, 1:59 PM CDT	River Flood Warning	MEG	Lowndes, Monroe	71 hr
Jun 24, 2:01 AM CDT	Severe Thunderstorm Warning	MEG	Cross, St. Francis	44 min
Jun 24, 2:42 AM CDT	Severe Thunderstorm Warning	MEG	Cross, St. Francis	48 min
Jun 24, 3:25 AM CDT	Special Weather Statement	MEG	Crittenden, Cross, St. Francis	50 min
Jun 24, 4:00 AM CDT	Special Weather Statement	MEG	Mississippi	45 min
Jun 24, 4:22 AM CDT	Special Weather Statement	MEG	Poinsett	38 min
Jun 24, 4:39 AM CDT	Special Weather Statement	MEG	Crittenden, Cross	51 min
Jun 24, 4:42 AM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Cross, St. Francis	48 min
Jun 24, 5:25 AM CDT	Special Weather Statement	MEG	Craighead	50 min
Jun 24, 5:33 AM CDT	Special Weather Statement	MEG	Crittenden	27 min
Jun 24, 5:40 AM CDT	Severe Thunderstorm Warning	MEG	Craighead, Lawrence, Poinsett	50 min
Jun 24, 5:44 AM CDT	Areal Flood Advisory	MEG	Crittenden, Cross, St. Francis	2 hr
Jun 24, 6:32 AM CDT	Special Weather Statement	MEG	Lawrence	43 min
Jun 24, 6:42 AM CDT	Severe Thunderstorm Warning	MEG	Lawrence, Randolph	48 min
Jun 24, 7:23 AM CDT	Special Weather Statement	MEG	Lawrence	37 min
Jun 24, 7:30 AM CDT	Areal Flood Advisory	MEG	Lawrence, Randolph	2 hr
Jun 24, 8:24 AM CDT	Special Weather Statement	MEG	Randolph	51 min
Jun 24, 10:20 AM CDT	Special Weather Statement	MEG	Clay	40 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2018 Every severe thunderstorm warning in 2018

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.