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  Friday June 26, 2026

RSS Mesoscale Discussions from Storm Prediction Center

SPC Severe Thunderstorm Watch 402

WW 402 SEVERE TSTM KS OK TX 270225Z - 270800Z
      
WW 0402 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 402
NWS Storm Prediction Center Norman OK
925 PM CDT Fri Jun 26 2026

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southwest Kansas
  Eastern Oklahoma Panhandle
  Northeast Texas Panhandle

* Effective this Friday night and Saturday morning from 925 PM
  until 300 AM CDT.

* Primary threats include...
  Scattered damaging winds and isolated significant gusts to 75
    mph possible
  Scattered large hail events to 1.5 inches in diameter possible
  A tornado or two possible

SUMMARY...A line of strong to severe storms is expected to continue
eastward into southwest Kansas and adjacent portions of the
central/eastern Oklahoma and northeastern Texas Panhandles. Strong
gusts are the primary risk, with isolated instances of large hail
possible as well. Low-level stability is gradually increasing,
keeping the potential for a tornado low, although still non zero.

The severe thunderstorm watch area is approximately along and 45
statute miles east and west of a line from 40 miles northwest of
Garden City KS to 80 miles south southeast of Guymon OK. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU2).

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 398...WW 400...WW 401...

AVIATION...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 500. Mean storm motion vector
27025.

...Mosier

Read more

SPC Severe Thunderstorm Watch 401

WW 401 SEVERE TSTM AR KS MO OK 262255Z - 270600Z
      
WW 0401 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 401
NWS Storm Prediction Center Norman OK
555 PM CDT Fri Jun 26 2026

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Far Northwest Arkansas
  Far Southeast Kansas
  Southwest and South Central Missouri
  Northern Oklahoma

* Effective this Friday afternoon and Saturday morning from 555
  PM until 100 AM CDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1.5 inches in diameter possible

SUMMARY...Thunderstorm development is expected to continue along a
surface boundary extending across far northern Oklahoma into
southwest/south-central Missouri. Strong buoyancy and moderate shear
will support occasionally organized storm structures capable of
isolated hail and strong downdrafts.

The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 85 miles west southwest
of Alva OK to 40 miles southeast of Fort Leonard Wood MO. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU1).

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 397...WW 398...WW
399...WW 400...

AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27020.

...Mosier

Read more

SPC Severe Thunderstorm Watch 400

WW 400 SEVERE TSTM MT SD WY 262230Z - 270600Z
      
WW 0400 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 400
NWS Storm Prediction Center Norman OK
430 PM MDT Fri Jun 26 2026

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Central and Eastern Montana
  Western South Dakota
  Northeast Wyoming

* Effective this Friday afternoon from 430 PM until Midnight MDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Scattered large hail events to 1.5 inches in diameter possible

SUMMARY...Thunderstorms coverage is expected to increase this
afternoon and evening as a shortwave trough moves into the region.
Environmental conditions support the potential for strong to severe
storms, with bowing segments capable of strong gusts as the primary
risk. A few instances of large hail are possible as well,
particularly across central Montana.

The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 55 miles east northeast
of Lewistown MT to 80 miles southeast of Gillette WY. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU0).

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 397...WW 398...WW 399...

AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
24035.

...Mosier

Read more

SPC Severe Thunderstorm Watch 398

WW 398 SEVERE TSTM CO NE NM OK TX WY 262040Z - 270300Z
      
WW 0398 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 398
NWS Storm Prediction Center Norman OK
240 PM MDT Fri Jun 26 2026

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Eastern Colorado
  Western Nebraska
  Northeast New Mexico
  Western Oklahoma Panhandle
  Northwest Texas Panhandle
  Eastern Wyoming

* Effective this Friday afternoon and evening from 240 PM until
  900 PM MDT.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 2.5
    inches in diameter possible
  Scattered damaging wind gusts to 70 mph possible
  A tornado or two possible

SUMMARY...At least widely scattered severe storms including a few
supercells and multicells are expected regionally, with large hail
and damaging winds the primary hazards.

The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 40 miles east northeast
of Douglas WY to 25 miles south of Clayton NM. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU8).

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 397...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 600. Mean storm motion vector
28025.

...Guyer

Read more

SPC Severe Thunderstorm Watch 402 Status Reports

WW 0402 Status Updates
      
WW 0402 Status Image

STATUS FOR WATCH 0402 HAS NOT BEEN ISSUED YET
Read more

SPC Severe Thunderstorm Watch 401 Status Reports

WW 0401 Status Updates
      
WW 0401 Status Image

STATUS REPORT ON WW 401

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NNE PNC
TO 25 NNW GMJ TO 20 ENE FYV.

..CHALMERS..06/27/26

ATTN...WFO...TSA...ICT...SGF...OUN...


STATUS REPORT FOR WS 401 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

ARC007-270340-

AR 
.    ARKANSAS COUNTIES INCLUDED ARE

BENTON               


OKC003-011-035-037-039-041-043-045-047-053-059-071-073-081-083-
093-097-103-105-109-113-115-117-119-129-131-143-147-151-153-
270340-

OK 
.    OKLAHOMA COUNTIES INCLUDED ARE

ALFALFA              BLAINE              CRAIG               
CREEK                CUSTER              DELAWARE            
DEWEY                ELLIS               GARFIELD            
GRANT                HARPER              KAY                 
KINGFISHER           LINCOLN             LOGAN               
MAJOR                MAYES               NOBLE               
NOWATA               OKLAHOMA            OSAGE               
OTTAWA               PAWNEE              PAYNE               
ROGER MILLS          ROGERS              TULSA               
WASHINGTON           WOODS               WOODWARD            
Read more

SPC Severe Thunderstorm Watch 400 Status Reports

WW 0400 Status Updates
      
WW 0400 Status Image

STATUS REPORT ON WW 400

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 SSE RAP
TO 35 E 4BQ TO 45 SSW MLS TO 55 WNW MLS TO 60 S GGW.

..KERR..06/27/26

ATTN...WFO...BYZ...TFX...GGW...UNR...


STATUS REPORT FOR WS 400 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MTC011-017-033-071-105-270340-

MT 
.    MONTANA COUNTIES INCLUDED ARE

CARTER               CUSTER              GARFIELD            
PHILLIPS             VALLEY              


SDC019-063-093-103-270340-

SD 
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BUTTE                HARDING             MEADE               
PENNINGTON           


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.

Read more

SPC Tornado Watch 399 Status Reports

WW 0399 Status Updates
      
WW 0399 Status Image

STATUS REPORT ON WW 399

THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.

..CHALMERS..06/26/26

ATTN...WFO...PAH...


STATUS REPORT FOR WT 399 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

ILC003-059-069-077-087-127-151-153-165-181-199-270040-

IL 
.    ILLINOIS COUNTIES INCLUDED ARE

ALEXANDER            GALLATIN            HARDIN              
JACKSON              JOHNSON             MASSAC              
POPE                 PULASKI             SALINE              
UNION                WILLIAMSON          


INC129-147-163-173-270040-

IN 
.    INDIANA COUNTIES INCLUDED ARE

POSEY                SPENCER             VANDERBURGH         
WARRICK              


KYC007-033-035-039-047-055-059-083-101-105-107-139-143-145-149-
157-177-219-221-225-233-270040-

KY 
.    KENTUCKY COUNTIES INCLUDED ARE

Read more

SPC Severe Thunderstorm Watch 398 Status Reports

WW 0398 Status Updates
      
WW 0398 Status Image

STATUS REPORT ON WW 398

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WNW DHT
TO 30 N CAO TO 30 NNE LAA TO 5 SW SNY TO 30 S BFF TO 15 W AIA.

PARTS OF REMAINING VALID PORTION OF 398 MAY BE EXTENDED LOCALLY IN
TIME FOR AN HOUR OR SO.

..KERR..06/27/26

ATTN...WFO...BOU...PUB...GLD...CYS...ABQ...AMA...


STATUS REPORT FOR WS 398 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

COC009-017-061-063-099-125-270300-

CO 
.    COLORADO COUNTIES INCLUDED ARE

BACA                 CHEYENNE            KIOWA               
KIT CARSON           PROWERS             YUMA                


NEC033-105-123-270300-

NE 
.    NEBRASKA COUNTIES INCLUDED ARE

CHEYENNE             KIMBALL             MORRILL             


OKC025-139-270300-

OK 
.    OKLAHOMA COUNTIES INCLUDED ARE

Read more

SPC Severe Thunderstorm Watch 397 Status Reports

WW 0397 Status Updates
      
WW 0397 Status Image

STATUS REPORT ON WW 397

SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SE GFL TO
10 SE LEB TO 20 E MWN.

FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1340

..CHALMERS..06/26/26

ATTN...WFO...GYX...BTV...


STATUS REPORT FOR WS 397 

SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS 

MEC031-262340-

ME 
.    MAINE COUNTIES INCLUDED ARE

YORK                 


NHC001-003-005-011-013-015-017-019-262340-

NH 
.    NEW HAMPSHIRE COUNTIES INCLUDED ARE

BELKNAP              CARROLL             CHESHIRE            
HILLSBOROUGH         MERRIMACK           ROCKINGHAM          
STRAFFORD            SULLIVAN            


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.

Read more

SPC MD 1345

MD 1345 CONCERNING SEVERE THUNDERSTORM WATCH 398... FOR PARTS OF SOUTHEASTERN COLORADO...SOUTHWESTERN KANSAS AND ADJACENT PORTIONS OF THE HIGH PLAINS
MD 1345 Image


Mesoscale Discussion 1345
NWS Storm Prediction Center Norman OK
0902 PM CDT Fri Jun 26 2026

Areas affected...parts of southeastern  Colorado...southwestern
Kansas and adjacent portions of the high plains

Concerning...Severe Thunderstorm Watch 398...

Valid 270202Z - 270400Z

The severe weather threat for Severe Thunderstorm Watch 398
continues.

SUMMARY...An evolving cluster of storms may organize further and
become accompanied by increasing potential to produce strong to
severe gusts through 10-11 PM CDT.

DISCUSSION...Convection has continued to grow upscale within a
narrow corridor of moderate to strong potential instability across
the high plains.  Southeastward across southwestern Kansas into
northwestern Oklahoma, this is focused along a remnant baroclinic
zone associated with stronger differential daytime heating.  The
boundary layer has begun to slowly cool either side of this
baroclinic zone, and there appears at least subtle continuing
warming associated with elevated mixed-layer air spreading east of
the Rockies, contributing to increasing inhibition.  However,
another weak short wave impulse on the southern fringe of the
westerlies is slowly overspreading the Raton Mesa/ridging vicinity,
which may suppress larger-scale mid-level height rise this evening. 

Given favorable deep-layer shear, due to pronounced veering of
low-level east-southeasterly flow to modest westerlies, there
appears at least some potential for convection to organize further
as it continues to consolidate.  This may be accompanied by a
strengthening cold pool, which should tend to propagate
east-southeastward along the low-level baroclinic zone.

..Kerr.. 06/27/2026

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...DDC...GLD...AMA...PUB...

LAT...LON   37960220 38430168 37119991 36620113 36980206 37560246
            37960220 

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

Read more

SPC MD 1343

MD 1343 CONCERNING SEVERE THUNDERSTORM WATCH 398...400... FOR PARTS OF SOUTHEASTERN MONTANA...WESTERN SOUTH DAKOTA...WESTERN NEBRASKA
MD 1343 Image


Mesoscale Discussion 1343
NWS Storm Prediction Center Norman OK
0813 PM CDT Fri Jun 26 2026

Areas affected...parts of southeastern Montana...western South
Dakota...western Nebraska

Concerning...Severe Thunderstorm Watch 398...400...

Valid 270113Z - 270315Z

The severe weather threat for Severe Thunderstorm Watch 398, 400
continues.

SUMMARY...Strong to severe wind gusts may become more prominent with
growing thunderstorm clusters overspreading the region, before
activity begins to weaken by 9-10 PM MDT.

DISCUSSION...Moisture return into the vicinity of the deepening
surface troughing to the lee of the Rockies has been modest, but
sufficient to support a narrow corridor of CAPE on the order of
1000-2000 J/kg, in the presence of steep lapse rates.   Largest
potential instability remains focused south-southeast of the Black
Hills, with strengthening outflow associated with upscale growing
convection likely to progress through much of the instability axis
by 03-04Z.  Until then, the risk for severe hail will probably
persist in stronger cells another hour or two, before more
widespread strong to severe gusts becomes more prominent.

..Kerr.. 06/27/2026

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...BIS...LBF...UNR...CYS...BYZ...

LAT...LON   46240425 45370231 44170144 42700143 41590236 41830316
            42640280 43640390 44420400 45770512 46240425 

MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN

Read more

SPC Jun 27, 2026 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook
      
Day 1 Outlook Image
Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0802 PM CDT Fri Jun 26 2026

Valid 270100Z - 271200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS INTO EARLY TONIGHT
FROM THE HIGH PLAINS INTO NORTHERN OKLAHOMA AND SOUTHERN MISSOURI...

...SUMMARY...
Scattered severe thunderstorms with severe outflow gusts and large
hail will persist into early tonight across the High Plains and from
northern Oklahoma into southern Missouri.

...Northern OK to southern MO...
Multiple strong-severe storms formed late this afternoon along a
stalled front from the northeast TX Panhandle eastward into northern
OK into southern MO.  Seasonably high moisture content in the
boundary layer (dewpoints in the low-mid 70s) and lingering warm
temperatures are contributing to MLCAPE near 3000 J/kg with only
weak convective inhibition, while vertical shear is sufficient for
supercells with large hail (1 to 2 inches in diameter).  Storms will
likely persist into tonight as a result of cell interactions and an
increase in warm advection with a strengthening low-level jet,
immediately downstream from a subtle midlevel trough now approaching
northwest OK.  The stronger cells/clusters will be capable of
isolated large hail and occasional severe outflow gusts of 60-70 mph
as storms spread slowly southeastward across
northern/central/northeast OK.  

A similar environment extends into southern MO along and south of
the stalled front, with a few ongoing cells/clusters.  There has
been some localized tornado threat across south central MO where a
discrete storm or two are interacting with a zone of slightly
enhanced low-level shear in a moist environment, though the tornado
threat will remain localized/marginal.

...High Plains...
Widely scattered storm clusters formed this afternoon and continue
to develop this evening with interacting outflows from MT across
eastern WY/NE Panhandle into eastern CO and the western OK Panhandle
on the west edge of the moisture in a largely upslope flow regime. 
This corridor is downstream from a pronounced midlevel trough over
the Great Basin/Pacific Northwest, which will encourage a nocturnal
low-level jet to support some persistence of storms into early
tonight, despite weakening buoyancy and increasing inhibition with
eastward extent.  Occasional severe outflow gusts and large hail
will be the main threats.

Potential for storms to maintain a wind/hail threat a little deeper
into the overnight hours will be across southwest KS and vicinity. 
The storm clusters spreading eastward from CO will encounter
somewhat richer low-level moisture (mid-upper 60s dewpoints) on the
immediate cool side of a stalled front, coincident with a nocturnal
increase in the low-level jet and associated warm advection.

...KY area...
A remnant MCV is moving eastward over western KY with the primary
storm cluster from far southern IN into central KY on the leading
edge of the ascent.  These storms have exhibited a primarily linear
mode with a trailing cold pool into western KY.  Earlier discrete
storms have since weakened while moving atop the rain-cooled air,
though a few storms may persist into early tonight in the warm
advection regime on the southwest flank of the MCV.  The primary
severe threat appears to be isolated wind damage with the leading
line segments across central/northern KY for the next 1-2 hours
before boundary-layer stabilization weakens the storms.

..Thompson.. 06/27/2026

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