Severe Thunderstorm Warning 89, NWS Memphis, TN

Area Forecast Discussion
National Weather Service Memphis TN
1239 AM CDT Tue Apr 28 2026

...New AVIATION...

.KEY MESSAGES...
Issued at 1239 AM CDT Tue Apr 28 2026

- Numerous severe thunderstorms are expected overnight into early
  Tuesday morning with the threat for damaging winds, large hail,
  and strong tornadoes.

- Another round of severe weather is expected Tuesday afternoon
  into early Wednesday morning. Primary threats will be damaging
  and large hail with a secondary threat for a few tornadoes.

- Another chance for showers and thunderstorms arrives on Friday.
  Otherwise, generally dry weather is expected on Thursday and
  over the weekend.

&&

.DISCUSSION...
(Tonight through next Monday)
Issued at 1120 PM CDT Mon Apr 27 2026

A busy overnight hour is progressing with a line of severe
thunderstorms moving into the far northwestern portions of the
Mid-South and some isolated storms developing across West TN.
Through the remainder of the overnight and early morning hours,
this line will continue to move through a favorable, fairly
uncapped environment. Latest mesoanalysis data from the region
continues to highlight MLCAPE values in the 2,000 to 3,000 J/kg
range with 0-3km SRH values over 400 m2/s2. While storms ahead of
the main line have remained tame over the past 30 minutes, this
will likely change as the forcing continues to progress eastward.
All storm modes will remain on the table into the overnight hours,
with a Tornado Watch in effect until 5 AM for the entire area.
The area of greatest concern does appear to be across eastern AR
and north of the TN/MS stateline, but storms will have the
potential to go severe south of the TN/MS line later in the
overnight hours.

Through the rest of Tuesday, a secondary shortwave will move off
of the Rockies through the daytime, bringing another round of
severe weather to the Mid-South. Any lingering convection from
the ongoing overnight round will move out of the area by mid-
morning, allowing for plenty of time for the atmosphere to
destabilize once again heading into the afternoon and evening.
The entire Mid-South is in either an Enhanced Risk (3/5) or
Slight Risk (2/5) once again for Tuesday. Guidance continues to
suggest yet another robust environment across the Mid-South, with
MLCAPE values >2,500 J/kg, ample deep layer shear, and lapse
rates between 7 to 8. Timing with this would be generally after 2
PM. All storm modes are on the table once again, but there is more
confidence for a damaging wind and large hail threat. In addition
to the severe weather threat, there is an increasing concern for
a flooding threat by the evening hours. PWAT values will be over
the 90th percentile for the time of year, with some CAMs showing
storms lingering along the I-40 corridor. If any of these
convective storms begin to train over an area, this would
significantly increase the flooding concern pretty rapidly. While
we have been in a drought, given the overnight rainfall expected,
any additional rainfall that lingers could quickly become an issue
especially in metropolitan areas. Instability will begin to
diminish as we approach midnight, with the main severe weather
threat likely ending by midnight. Some lingering showers could
linger into early Wednesday morning.

Primarily zonal to weak northwesterly flow in the upper-levels
will arrive by Wednesday, with a cooler and increasingly dry
forecast by the middle to end of the work week. While some
lingering moisture could bring showers (~20% chance) to our
southern tier of counties, confidence overall is low and most of
the area will likely remain dry. By the end of the week, an upper-
level low will move out of the four corners, bringing our next
potential rain maker to the Mid-South Friday into Saturday.
Severe weather does not appear to be a concern with this system,
with little to no instability expected. As far as high
temperatures go, temperatures will continue to fall by Wednesday
with temperatures spanning the 70s before dipping into the 60s
Thursday through at least the first half of the weekend. 6 to
10 day CPC guidance does keep the Mid-South in a below normal
temperature outlook with near to below normal precipitation, so
overall the cooler pattern will likely continue into next week.

&&

.AVIATION...
(06Z TAFS)
Issued at 1239 AM CDT Tue Apr 28 2026

Complex TAF period over the next 24 to 30 hours with ongoing
convection and a second round of convection expected by the
afternoon to evening. Category drops will be likely for JBR, MKL,
MEM over the next few hours as TSRA moves through the area. TUP
may see some low clouds after 10Z. There should be a window
generally in the mid-morning to early afternoon hours where
clouds could sct out in some locations with temporary
improvements to VFR. The biggest question will be into the
afternoon and evening with a secondary wave of TSRA. Given
overall low confidence with timing, mainly accounted for this
with PROB30 groupings.

&&

.FIRE WEATHER...
Issued at 1120 PM CDT Mon Apr 27 2026

Minimal fire danger concerns with multiple rounds of showers and
thunderstorms expected through Tuesday. Dry conditions with minRH
values below 40% will return on Thursday, before additional
moisture returns to end the week.

&&

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

PUBLIC FORECAST...CMA
AVIATION...CMA

Preliminary Local Storm Report
National Weather Service Memphis TN
1146 PM CDT Mon Apr 27 2026

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

1055 PM     Tstm Wnd Gst     Rector                  36.27N 90.29W
04/27/2026  M60 MPH          Clay               AR   Broadcast Media

            Thunderstorm wind gust reported near Rector.
            Estimated at 60 mph.

&&

TB

Preliminary Local Storm Report
National Weather Service Memphis TN
1239 AM CDT Tue Apr 28 2026

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

1229 AM     Hail             1 SE Dyersburg          36.03N 89.36W
04/28/2026  M1.00 Inch       Dyer               TN   Public

            Quarter size hail in SE Dyersburg.

&&

CMA

Preliminary Local Storm Report
National Weather Service Memphis TN
1242 AM CDT Tue Apr 28 2026

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

1150 PM     Hail             1 SE Paragould          36.04N 90.50W
04/27/2026  E1.00 Inch       Greene             AR   Public

            Report from mPING: Quarter (1.00 in.).

&&

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