WW 283 SEVERE TSTM MT ND 070035Z - 070800Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 283
NWS Storm Prediction Center Norman OK
635 PM MDT Sat Jun 6 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Montana
Western North Dakota
* Effective this Saturday night and Sunday morning from 635 PM
until 200 AM MDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
SUMMARY...A mix of high-based supercells and multicells should pose
a threat for large hail up to 1-2 inches in diameter and
severe/damaging winds around 60-75 mph this evening and through the
early overnight hours as this activity moves northeastward.
The severe thunderstorm watch area is approximately along and 125
statute miles east and west of a line from 25 miles south of Miles
City MT to 70 miles north northeast of Wolf Point MT. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 279...WW 281...WW 282...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
21040.
...Gleason
WW 0283 Status Updates
STATUS REPORT ON WW 283
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 60 WSW MLS
TO 80 NNW GGW.
..LYONS..06/07/26
ATTN...WFO...BYZ...GGW...BIS...
STATUS REPORT FOR WS 283
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC017-019-021-025-033-055-079-083-085-087-091-105-109-070540-
MT
. MONTANA COUNTIES INCLUDED ARE
CUSTER DANIELS DAWSON
FALLON GARFIELD MCCONE
PRAIRIE RICHLAND ROOSEVELT
ROSEBUD SHERIDAN VALLEY
WIBAUX
NDC007-011-013-023-033-053-061-087-105-070540-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BILLINGS BOWMAN BURKE
DIVIDE GOLDEN VALLEY MCKENZIE
MOUNTRAIL SLOPE WILLIAMS
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
WW 0282 Status Updates
STATUS REPORT ON WW 282
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LYONS..06/06/26
ATTN...WFO...CLE...RLX...PBZ...
STATUS REPORT FOR WS 282
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OHC005-009-013-019-029-031-033-043-059-063-067-075-077-081-083-
093-101-103-105-111-115-117-119-121-127-139-143-147-151-157-163-
167-169-173-175-070040-
OH
. OHIO COUNTIES INCLUDED ARE
ASHLAND ATHENS BELMONT
CARROLL COLUMBIANA COSHOCTON
CRAWFORD ERIE GUERNSEY
HANCOCK HARRISON HOLMES
HURON JEFFERSON KNOX
LORAIN MARION MEDINA
MEIGS MONROE MORGAN
MORROW MUSKINGUM NOBLE
PERRY RICHLAND SANDUSKY
SENECA STARK TUSCARAWAS
VINTON WASHINGTON WAYNE
WOOD WYANDOT
WVC009-029-051-069-073-095-103-107-070040-
WV
. WEST VIRGINIA COUNTIES INCLUDED ARE
WW 0281 Status Updates
STATUS REPORT ON WW 281
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNW SBY
TO 25 SSW JFK TO 25 W BDR TO 5 NNW BDL.
..LYONS..06/07/26
ATTN...WFO...OKX...PHI...
STATUS REPORT FOR WS 281
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC001-009-070240-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
FAIRFIELD NEW HAVEN
NYC059-103-070240-
NY
. NEW YORK COUNTIES INCLUDED ARE
NASSAU SUFFOLK
ANZ331-335-340-345-353-355-450-451-452-453-070240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY TO THE
MOUTH OF THE CONNECTICUT RIVER
WW 0280 Status Updates
STATUS REPORT ON WW 280
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SE MSV TO
10 NNW GFL.
..LYONS..06/06/26
ATTN...WFO...ALY...BGM...
STATUS REPORT FOR WS 280
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC005-070040-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
LITCHFIELD
MAC003-070040-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BERKSHIRE
NYC001-021-027-039-083-093-111-070040-
NY
. NEW YORK COUNTIES INCLUDED ARE
ALBANY COLUMBIA DUTCHESS
GREENE RENSSELAER SCHENECTADY
ULSTER
WW 0279 Status Updates
STATUS REPORT ON WW 279
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 SE SBN TO
35 ESE IND.
..LYONS..06/07/26
ATTN...WFO...IWX...IND...ILN...
STATUS REPORT FOR WS 279
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC011-015-017-023-045-067-103-107-157-159-171-181-070240-
IN
. INDIANA COUNTIES INCLUDED ARE
BOONE CARROLL CASS
CLINTON FOUNTAIN HOWARD
MIAMI MONTGOMERY TIPPECANOE
TIPTON WARREN WHITE
OHC003-125-137-161-070240-
OH
. OHIO COUNTIES INCLUDED ARE
ALLEN PAULDING PUTNAM
VAN WERT
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 0278 Status Updates
STATUS REPORT ON WW 278
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 ESE MRB
TO 25 SSE CXY TO 40 W ABE.
..SUPINIE..06/06/26
ATTN...WFO...LWX...CTP...
STATUS REPORT FOR WS 278
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DCC001-062340-
DC
. DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE
DISTRICT OF COLUMBIA
MDC003-005-009-013-015-025-027-031-033-510-062340-
MD
. MARYLAND COUNTIES INCLUDED ARE
ANNE ARUNDEL BALTIMORE CALVERT
CARROLL CECIL HARFORD
HOWARD MONTGOMERY PRINCE GEORGES
MARYLAND INDEPENDENT CITIES INCLUDED ARE
BALTIMORE CITY
MD 1012 CONCERNING SEVERE THUNDERSTORM WATCH 283... FOR NORTHEASTERN MONTANA AND NORTHWEST NORTH DAKOTA
Mesoscale Discussion 1012
NWS Storm Prediction Center Norman OK
0954 PM CDT Sat Jun 06 2026
Areas affected...northeastern Montana and northwest North Dakota
Concerning...Severe Thunderstorm Watch 283...
Valid 070254Z - 070500Z
The severe weather threat for Severe Thunderstorm Watch 283
continues.
SUMMARY...The severe risk will continue much of this evening into
the overnight hours. Hail and damaging gusts are likely. Some
significant damaging wind gusts to 75 mph are possible.
DISCUSSION...Across WW283, several strong to severe storms have
developed and intensified along a sagging frontal zone over the last
several hours. The environment along both sides of the front in MT
and ND is strongly unstable, (max MUCAPE ~3000 J/kg) with steep
mid-level lapse rates. Vertical shear is also quite robust (50-60 kt
EBWD) as the main belt of 50+ kt mid-level flow continues to
overspread the frontal zone. A strengthening nocturnal low-level jet
will also aid in further intensification of the ongoing convection
this evening and into the early overnight hours.
Radar trends show the initial stages of upscale growth along the
front are underway. As the storms interact, they should merge into
organized clusters and possibly a bowing segment or two. This
appears most likely near the boundary and northeastward where
low-level convergence will be maximized.
The strong buoyancy and kinematic parameter space will likely favor
efficient downdrafts with the potential for a damaging wind threat
late this evening into the early overnight period from northeastern
MT, northwest ND toward the international border. Severe gusts, with
a few significant gusts to 75+ mph are possible and supported by
recent CAM solutions. Some hail risk may also remain with the more
cellular elements.
..Lyons.. 06/07/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...BIS...BYZ...GGW...
LAT...LON 46440655 47270760 48050719 48660666 49100630 49080534
49070186 48970187 47490303 46030393 46440655
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0802 PM CDT Sat Jun 06 2026
Valid 070100Z - 071200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE NORTHERN HIGH PLAINS...
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE OHIO VALLEY...MID-ATLANTIC AND SOUTHERN NEW ENGLAND...
...SUMMARY...
Thunderstorms with severe wind gusts and hail are expected this
evening over parts of southern New England, and from the Ohio Valley
into the northern Mid-Atlantic. Large hail and severe wind gusts
(including gusts exceeding 75 mph) are also expected in the northern
High Plains.
...New England...
A line of strong to severe thunderstorms is ongoing from New Jersey
northeastward into southern New England. This line is being
supported by large-scale ascent associated with a mid-level
shortwave trough moving eastward through the central Appalachians.
Ahead of the line, surface dewpoints across southern New England are
in the lower to mid 60s F, and the RAP is analyzing MUCAPE around
1000 J/kg. The WSR-88D VWPs at both New York and Boston have 0-6 km
shear in the 30 to 35 knot range, with 35 knots of flow 1 km above
the surface. This environment, along with steep low-level lapse
rates, evident on forecast soundings will be favorable for severe
wind gusts as the line moves eastward across southern New England
this evening.
Further north across the remainder of New England, scattered
thunderstorms are ongoing. These storms are located in the vicinity
of an instability maximum, where the RAP has MUCAPE in the 1000 to
1500 J/kg range. In addition, moderate deep-layer shear is present
which should support an isolated threat for severe gusts and hail.
...Southern Great Lakes/Ohio Valley...
The latest water vapor imagery shows west-northwesterly mid-level
flow over the Great Lakes and Ohio Valley. At the surface, a cold
front is located from far northern Indiana eastward to near Lake
Erie. To the south of the front, dewpoints are mostly in the lower
70s F, which is contributing to moderate instability. The RAP has
MLCAPE in the 1500 to 2500 J/kg range. Scattered thunderstorms are
ongoing along and to the south of the instability axis. The
strongest deep-layer shear is analyzed from Ohio into southern
Pennsylvania, which should be the favored corridor for supercell
development. Isolated large hail and severe gusts will be possible
with supercells. Multicells will also be capable of strong to severe
gusts.
Further west into the mid Mississippi Valley, a few strong to severe
storms will be possible near a pocket of moderate instability. Steep
low-level lapse rates will support a potential for isolated severe
gusts. Hail will also be possible.
...Northern High Plains...
Over the northern High Plains, water vapor imagery shows a mid-level
shortwave trough moving northeastward through the flow. Ahead of the
trough, a moist and unstable airmass is located across eastern
Montana and western North Dakota, where surface dewpoints are mostly
in the upper 50s and lower 60s F. Over this area, the RAP has MLCAPE
in the 2500 to 3500 J/kg range. Along the western edge of the
stronger instability, thunderstorms are expected to develop this
evening. The storms will move northeastward across northeastern
Montana and far northwestern North Dakota.
Forecast soundings to the northwest of Williston have 0-6 km shear
of 45 to 50 knots with 700-500 mb lapse rates approaching 9 C/km.
This will support the development of supercells with large hail.
Hailstones greater than 2 inches in diameter will be possible with
the more dominant storms. In addition, low-level lapse rates will be
very steep supporting severe wind gusts. A few gusts above 75 mph
will be possible, especially if a cold pool can organize.
...Southern Plains/Ark-La-Tex...
A mid-level shortwave trough is currently evident on water vapor
imagery over northwest Texas, with a moist and unstable airmass in
place from central and north Texas into southern Oklahoma. Scattered
thunderstorms are ongoing along the western edge of the stronger
instability along the I-35 corridor from the northern Texas Hill
Country into the Dallas/Fort Worth Metro. Steep lapse rates and
moderate deep-layer shear will continue to support an isolated
wind-damage and hail threat for a couple more hours this evening.
Further east into the Ark-La-Tex, scattered storms are ongoing from
far eastern Oklahoma into far western Arkansas. These storms are
located along the northern edge of moderate instability, where the
RAP has MLCAPE around 2000 J/kg. Forecast soundings near Fort Smith
early this evening have 0-3 km storm-relative helicity around 200
m2/s2 suggesting an isolated tornado threat will exist. The tornado
threat should persist for a couple more hours.
..Broyles.. 06/07/2026
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