WW 348 TORNADO LA MS CW 180320Z - 181100Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 348
NWS Storm Prediction Center Norman OK
1020 PM CDT Wed Jun 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southern and Southeast Louisiana
Southern Mississippi
Coastal Waters
* Effective this Wednesday night and Thursday morning from 1020
PM until 600 AM CDT.
* Primary threats include...
A couple tornadoes possible
Isolated damaging wind gusts to 60 mph possible
SUMMARY...A few supercells are forecast to develop and spread inland
into the Watch area tonight. Sufficient instability and enlarging
hodographs into the overnight will support a risk for a couple of
tornadoes with the stronger storms.
The tornado watch area is approximately along and 60 statute miles
north and south of a line from 70 miles west northwest of Houma LA
to 40 miles southeast of Gulfport MS. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU8).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 344...WW 347...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 0.5 inches. Extreme turbulence and surface wind
gusts to 50 knots. A few cumulonimbi with maximum tops to 400. Mean
storm motion vector 20030.
...Smith
WW 347 TORNADO IL IN KY OH 180210Z - 180900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 347
NWS Storm Prediction Center Norman OK
1010 PM EDT Wed Jun 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southeast Illinois
Southern Indiana
Central into Northern Kentucky
Southwest into Southern Ohio
* Effective this Wednesday night and Thursday morning from 1010
PM until 500 AM EDT.
* Primary threats include...
A few tornadoes likely with a couple intense tornadoes possible
Scattered damaging winds and isolated significant gusts to 75
mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A cluster of supercells will move east into the Watch area
late this evening into tonight. The supercells will be capable of a
few tornadoes, including the possibility for strong tornadoes given
the intense flow fields aloft. Scattered damaging gusts are also
possible and may become more prevalent tonight as a mix of a linear
cluster and supercells probably evolves.
The tornado watch area is approximately along and 55 statute miles
north and south of a line from 80 miles east of Cincinnati OH to 65
miles northwest of Evansville IN. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU7).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 342...WW 343...WW
344...WW 345...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 28045.
...Smith
WW 344 TORNADO IN 172135Z - 180500Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 344
NWS Storm Prediction Center Norman OK
535 PM EDT Wed Jun 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southern into Central and North-Central Indiana
* Effective this Wednesday afternoon and Thursday morning from
535 PM until 100 AM EDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes likely
Widespread damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail and isolated very large hail events to 2.5
inches in diameter likely
SUMMARY...Severe thunderstorms are forecast to move east into the
Watch this evening and continue into the early overnight.
Supercells capable of tornadoes, some of which will probably be
strong, large to very large hail, and severe gusts are expected with
this activity.
The tornado watch area is approximately along and 70 statute miles
north and south of a line from 25 miles northwest of Terre Haute IN
to 30 miles south southeast of Muncie IN. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU4).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 341...WW 342...WW 343...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27040.
...Smith
WW 0348 Status Updates
STATUS REPORT ON WW 348
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..06/18/26
ATTN...WFO...LIX...LCH...MOB...
STATUS REPORT FOR WT 348
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC005-007-033-037-045-047-051-057-063-071-075-087-089-091-093-
095-099-101-103-105-109-117-121-180740-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASCENSION ASSUMPTION EAST BATON ROUGE
EAST FELICIANA IBERIA IBERVILLE
JEFFERSON LAFOURCHE LIVINGSTON
ORLEANS PLAQUEMINES ST. BERNARD
ST. CHARLES ST. HELENA ST. JAMES
ST. JOHN THE BAPTIST ST. MARTIN ST. MARY
ST. TAMMANY TANGIPAHOA TERREBONNE
WASHINGTON WEST BATON ROUGE
MSC039-045-047-059-109-131-180740-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
GEORGE HANCOCK HARRISON
JACKSON PEARL RIVER STONE
GMZ435-436-455-529-531-532-533-534-535-536-541-543-551-553-554-
WW 0347 Status Updates
STATUS REPORT ON WW 347
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 SE IND TO
30 NW LUK TO 10 W DAY.
..BROYLES..06/18/26
ATTN...WFO...PAH...LMK...ILN...RLX...JKL...
STATUS REPORT FOR WT 347
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC047-065-185-191-193-180740-
IL
. ILLINOIS COUNTIES INCLUDED ARE
EDWARDS HAMILTON WABASH
WAYNE WHITE
INC019-025-029-037-043-051-061-077-115-117-123-125-129-137-143-
147-155-163-173-175-180740-
IN
. INDIANA COUNTIES INCLUDED ARE
CLARK CRAWFORD DEARBORN
DUBOIS FLOYD GIBSON
HARRISON JEFFERSON OHIO
ORANGE PERRY PIKE
POSEY RIPLEY SCOTT
SPENCER SWITZERLAND VANDERBURGH
WARRICK WASHINGTON
KYC015-023-037-041-043-069-073-077-081-089-097-103-111-117-135-
WW 0344 Status Updates
STATUS REPORT ON WW 344
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE CMI
TO 25 NW DAY.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1174
..WEINMAN..06/18/26
ATTN...WFO...IND...IWX...
STATUS REPORT FOR WT 344
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC005-011-013-021-027-031-055-057-059-063-065-071-079-081-083-
093-097-101-105-107-109-119-121-133-139-145-153-165-167-
180340-
IN
. INDIANA COUNTIES INCLUDED ARE
BARTHOLOMEW BOONE BROWN
CLAY DAVIESS DECATUR
GREENE HAMILTON HANCOCK
HENDRICKS HENRY JACKSON
JENNINGS JOHNSON KNOX
LAWRENCE MARION MARTIN
MONROE MONTGOMERY MORGAN
OWEN PARKE PUTNAM
RUSH SHELBY SULLIVAN
VERMILLION VIGO
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
WW 0342 Status Updates
STATUS REPORT ON WW 342
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NW MDH TO
35 SW SPI TO 30 SE DNV.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1174
..WEINMAN..06/18/26
ATTN...WFO...LSX...ILX...LOT...DVN...
STATUS REPORT FOR WT 342
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC005-023-025-027-029-033-035-041-045-049-051-079-101-117-119-
121-135-139-159-173-189-180340-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOND CLARK CLAY
CLINTON COLES CRAWFORD
CUMBERLAND DOUGLAS EDGAR
EFFINGHAM FAYETTE JASPER
LAWRENCE MACOUPIN MADISON
MARION MONTGOMERY MOULTRIE
RICHLAND SHELBY WASHINGTON
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
No Mesoscale Discussions are in effect as of Thu Jun 18 06:30:04 UTC 2026.Public Severe Weather Outlook
PUBLIC SEVERE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1137 AM CDT WED JUN 17 2026
...Severe thunderstorms expected over parts of the Midwest this
afternoon and tonight...
* LOCATIONS...
Central Illinois
Central Indiana
* HAZARDS...
Several tornadoes, a couple intense
Scattered damaging winds, some hurricane force
Scattered large hail, some baseball size
* SUMMARY...
Numerous severe thunderstorms are expected this afternoon into
tonight, with the peak threat centered over Illinois and
Indiana. Intense tornadoes, swaths of damaging gusts over 75 mph
and damaging wind-driven large hail will all be possible.
Preparedness actions...
Review your severe weather safety procedures for the possibility
of dangerous weather today. Stay tuned to NOAA Weather Radio,
weather.gov, or other media for watches and warnings. A tornado
watch means that conditions are favorable for tornadoes to form
during the next several hours. If a tornado warning is issued for
your area, move to a place of safety, ideally in a basement or
interior room on the lowest floor of a sturdy building.
&&
..Hart.. 06/17/2026
$$
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1249 AM CDT Thu Jun 18 2026
Valid 181200Z - 191200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM KENTUCKY INTO
THE MID ATLANTIC...OVER MUCH OF THE NORTHEAST...AND ALONG THE
NORTHERN GULF COAST...
...SUMMARY...
Isolated to scattered severe thunderstorms will be possible from
Kentucky to the Mid-Atlantic, with primarily damaging wind gusts or
marginal hail. Scattered severe storms are possible from upstate New
York into New England, with damaging gusts or even a tornado. A few
tornadoes may occur over parts of the Gulf Coast states, and
scattered storms may produce gusty winds or marginal hail from
Oklahoma into northwest Texas.
...From KY into the Mid Atlantic...
Moderate mid to high level westerlies will exist from the OH Valley
to Mid Atlantic, south of the primary wave over the Northeast. This
region will be south of the midlevel drying, with ample low-level
moisture remaining in place ahead of the slower moving portion of
the front. Scattered storms may be ongoing early in the day from KY
into WV, with perhaps wind or even tornado potential as SRH will be
high at that time. As heating occurs during the day, boundary layer
mixing as well as veering and weakening winds at 850 mb may reduce
tornado risk. However, ample deep-layer shear and nearly
unidirectional wind profiles will favor both cells and fast-moving
clusters of storms producing damaging gusts and locally severe hail
throughout the day.
...Northeast...
Within a broader area of cyclonic flow aloft, a leading shortwave
trough will move from the Lower Great Lakes into the Northeast, with
a 90 kt midlevel speed max and cooling aloft moving across NY and
parts of New England during the day. Low pressure will develop into
southern Quebec, with a cold front extending southward into the
region.
Surface heating and gusty south winds will bring 60s F dewpoints
into the area with up to 1000 J/kg MUCAPE expected. Relatively warm
profiles will develop near 300 mb, somewhat limiting storm depth.
However, ample midlevel cooling will still support sufficient
destabilization. Strong deep-layer shear and backed surface winds
ahead of the cold front will favor low-topped supercells. Cells
should develop over northern NY by 18Z, and will move quickly east,
producing marginal hail and sporadic damaging gusts initially. The
low EL height may mitigate hail production somewhat. By late
afternoon, a tornado or two will be possible as storms encounter a
stronger SRH environment farther east.
...Parts of MS/AL/GA/FL...
Wind fields associated with the remnants of Arthur will increase
from LA into GA today, as a weak surface low and midlevel wave move
across MS/AL/GA. This system will provide a focus for storms which
will spread northeast out of LA/MS into AL, the FL Panhandle, and
eventually into GA. Although temperatures aloft are warm, areas of
strong low-level shear and mid 70s F dewpoints will support
organized bands of storms, some with embedded stronger cells.
Transient supercells will be possible with localized tornado risk.
Storms are likely to be ongoing over southeast LA and southern MS at
the start of the period, and these will develop northeastward
throughout the day.
...OK into northwest TX...
An east-west oriented cold front will move southward across the TX
Panhandle, Oklahoma and northwest today, pushing well south of the
stronger westerlies aloft over the central Plains. The air mass
ahead of the front will feature 70s F dewpoints, while daytime
heating brings MUCAPE values into the 3000-4000 J/kg range. South of
this cold front, low pressure is forecast to develop over western TX
where the strongest heating will occur.
Isolated morning thunderstorms may be present from the KS/OK border
area eastward toward the Ozarks, and marginal hail cannot be ruled
out due to substantial elevated CAPE. Any storms that form near the
boundary as it moves south during the day may produce locally strong
gusts. The greatest risk of locally severe gusts or marginal hail
appears to be across southwest OK into northwest TX, where the front
will be more favorably timed with peak heating. Shear will be weak,
but extensive outflow is possible.
..Jewell/Weinman.. 06/18/2026
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1224 AM CDT Thu Jun 18 2026
Valid 191200Z - 201200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS
OF THE UPPER MIDWEST...AND FROM NORTH TEXAS THROUGH THE SOUTHEAST...
...SUMMARY...
Isolated strong storms may produce gusty winds and hail across the
Upper Midwest. Additional strong thunderstorms may produce damaging
wind gusts from north Texas/southern Oklahoma through portions of
the Gulf Coast states and into the coastal Carolinas.
...Minnesota/Wisconsin...
An upper shortwave trough will migrate across the Upper Midwest on
Friday. This will bring a belt of enhanced northwesterly flow aloft
across the region. In the wake of a prior frontal passage,
boundary-layer moisture will be very modest (generally 50s F
dewpoints), but cool temperatures aloft and midlevel lapse rates
near 7 C/km will support weak destabilization (around 500-1000 J/kg
MLCAPE). Forecast soundings show vertically veering wind profiles
and elongated/straight hodographs with around 35-40 kt effective
shear magnitudes. Isolated higher-based supercells will be possible.
Steepened low-level lapse rates and the relatively dry
boundary-layer will support isolated strong gusts. Isolated
marginally severe hail also will be possible.
...ArkLaTex vicinity through the Gulf Coast states...
Most forecast guidance depicts an ongoing MCS across North Texas or
far southern OK at Friday morning. Strong gusts will be possible
with this system through the morning given modestly enhanced
mid/upper flow and a corridor of strong instability across the
ArkLaTex vicinity. This MCS and/or remnant MCV may continue
east/southeast across east TX or toward the lower MS Valley through
the day, tracking along a southward-sagging surface boundary.
Further east across the Gulf Coast vicinity, a very moist airmass
will be in place, with PW values near 2 inches common. This will aid
in moderate destabilization ahead of a west to east oriented surface
boundary. Vertical shear will be weak, but water laden downdrafts
could support isolated microbursts. It is unclear if convection will
be able to organize along the surface boundary into a forward
propagating cluster, but if this occurs, damaging wind potential
would increase.
...Coastal Carolinas...
A mid/upper shortwave trough will move across the area through
afternoon. Some guidance depicts a small MCS or cluster associated
with a strong low-level jet during the morning. As this feature
spreads northeast along the coast through afternoon, strong gusts
will be possible.
...Florida...
A seasonally moist and unstable airmass will reside across
north/central FL on Friday. Parts of the state will be on the
southern fringes of stronger mid-level flow associated with the
upper shortwave trough moving across the Carolinas. Some forecast
soundings show 20-30 kt midlevel low, and this may be sufficient for
transient organized cells along parts of the east coast. Additional
storms will be possible across the Panhandle and northern FL as
convection develops southward across the area ahead of a
southward-sagging surface boundary. Ample moisture/high PW values
and moderate instability will support occasional strong gusts with
the strongest storms.
..Leitman.. 06/18/2026
SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0119 AM CDT Thu Jun 18 2026
Valid 201200Z - 211200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
THE CENTRAL PLAINS...
...SUMMARY...
Severe thunderstorms are possible across portions of the central
Plains vicinity from Saturday afternoon into Saturday evening.
...Central Plains...
An upper ridge will initially be centered over the High Plains on
Saturday. An upper shortwave trough over the eastern Great Basin
will develop eastward, emerging over the central Rockies and
adjacent High Plains by 00z, and breaking down upper ridging. As
this occurs, mid/upper level flow will increase and a lee low will
deepen in the vicinity of eastern CO. A surface trough/dryline will
extend southward near the CO/KS border and along the NM/TX border.
Increasing south/southeasterly low-level flow will transport rich
boundary layer moisture (mid/upper 60s F dewpoints) northward across
KS, with low to mid 60s F dewpoints possible across much of NE.
Steep midlevel lapse rates atop the moistening boundary layer will
result in a moderate destabilization (MLCAPE 1500-2500 J/kg) across
the central High Plains and portions of central/eastern NE/KS.
Isolated to scattered thunderstorms are expected to develop within
upslope flow along the surface trough from far southeast WY into
eastern CO. As storms develop east/southeast with time, an
increasing southerly low-level jet may foster upscale development
into one or more bowing segments. Overall, supercell wind profiles
suggest large hail and perhaps tornadoes will be possible. If storms
grow upscale, damaging wind potential will increase during the
evening.
..Leitman.. 06/18/2026
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