WW 672 SEVERE TSTM KS MO 200110Z - 200600Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 672
NWS Storm Prediction Center Norman OK
810 PM CDT Sat Sep 19 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northeast Kansas
Northern Missouri
* Effective this Saturday night and Sunday morning from 810 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...Scattered strong-to-severe thunderstorms will continue
northeast across the area. Damaging thunderstorm outflows and
isolated hail will be possible with the strongest thunderstorms.
The severe thunderstorm watch area is approximately along and 80
statute miles either side of a line from 60 miles north northeast of
Saint Joseph MO to 25 miles south southwest of Chillicothe MO. 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 670...WW 671...
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.
...Marsh
WW 671 SEVERE TSTM CO KS 192130Z - 200400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 671
NWS Storm Prediction Center Norman OK
330 PM MDT Sat Sep 19 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Colorado
Northwest Kansas
* Effective this Saturday afternoon and evening from 330 PM until
1000 PM 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...Isolated but intense thunderstorms are expected to spread
eastward across the watch area through the late afternoon and early
evening. Damaging winds will be the main concern, although some
risk of large hail will also accompany the strongest cells.
The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 55 miles west southwest
of Burlington CO to 55 miles east southeast of Goodland KS. 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 670...
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
27025.
...Hart
WW 670 SEVERE TSTM KS OK TX 192020Z - 200400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 670
NWS Storm Prediction Center Norman OK
320 PM CDT Sat Sep 19 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central into Northeast Kansas
Western into North-Central Oklahoma
Eastern Texas Panhandle
* Effective this Saturday afternoon and evening from 320 PM until
1100 PM CDT.
* Primary threats include...
Scattered damaging winds likely with isolated significant gusts
to 75 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Thunderstorm coverage and intensity is expected to
increase this afternoon and evening as a cold front moves into the
warm, moist, and unstable environment in place from the Texas
Panhandle into northeast Kansas. Some isolated hail is possible,
particularly during the afternoon, but the primary threat this
afternoon and evening will be strong to severe wind gusts from 60 to
75 mph.
The severe thunderstorm watch area is approximately along and 65
statute miles north and south of a line from 115 miles west
southwest of Alva OK to 35 miles east southeast of Manhattan KS. 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.
&&
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
25020.
...Mosier
WW 0672 Status Updates
STATUS FOR WATCH 0672 HAS NOT BEEN ISSUED YET
WW 0671 Status Updates
STATUS REPORT ON WW 671
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..THORNTON..09/20/26
ATTN...WFO...GLD...
STATUS REPORT FOR WS 671
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC017-063-200340-
CO
. COLORADO COUNTIES INCLUDED ARE
CHEYENNE KIT CARSON
KSC071-109-181-193-199-203-200340-
KS
. KANSAS COUNTIES INCLUDED ARE
GREELEY LOGAN SHERMAN
THOMAS WALLACE WICHITA
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 0670 Status Updates
STATUS REPORT ON WW 670
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..THORNTON..09/19/26
ATTN...WFO...DDC...ICT...TOP...OUN...AMA...
STATUS REPORT FOR WS 670
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC007-015-017-027-033-041-053-061-077-079-085-095-097-111-113-
115-117-127-131-143-149-151-155-159-161-169-173-177-185-191-197-
192340-
KS
. KANSAS COUNTIES INCLUDED ARE
BARBER BUTLER CHASE
CLAY COMANCHE DICKINSON
ELLSWORTH GEARY HARPER
HARVEY JACKSON KINGMAN
KIOWA LYON MCPHERSON
MARION MARSHALL MORRIS
NEMAHA OTTAWA POTTAWATOMIE
PRATT RENO RICE
RILEY SALINE SEDGWICK
SHAWNEE STAFFORD SUMNER
WABAUNSEE
OKC003-043-045-053-059-093-129-151-153-192340-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ALFALFA DEWEY ELLIS
MD 2313 CONCERNING SEVERE THUNDERSTORM WATCH 671... FOR EASTERN COLORADO INTO WESTERN KANSAS
Mesoscale Discussion 2313
NWS Storm Prediction Center Norman OK
0729 PM CDT Sat Sep 19 2026
Areas affected...eastern Colorado into western Kansas
Concerning...Severe Thunderstorm Watch 671...
Valid 200029Z - 200230Z
The severe weather threat for Severe Thunderstorm Watch 671
continues.
SUMMARY...Severe threat continues within WW671.
DISCUSSION...Supercells continue within WW671, producing 1.75-2 inch
hail across eastern Colorado. Several storm interactions have
occurred, with a hybrid supercell/multicell cluster and outflow
boundary moving southeastward. Storms are steadily moving into a
more favorably sheared and moist/unstable air mass. The threat for
large hail will continue in the short term, with potential for hail
up to 2 inches. Observational trends and CAM guidance would suggest
that storms may eventually cluster along outflow with an increase in
damaging wind potential into the evening.
..Thornton.. 09/20/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GLD...PUB...
LAT...LON 39390205 39290251 39040260 38820262 38740261 38680241
38550200 38310190 38310156 38470138 38650126 38810123
39020125 39300156 39390205
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0757 PM CDT Sat Sep 19 2026
Valid 200100Z - 201200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM SOUTH-CENTRAL
KANSAS TO NORTHWEST MISSOURI...AND IN FAR WESTERN KANSAS...
...SUMMARY...
Thunderstorms with scattered severe wind gusts and large hail are
possible this evening across parts of the central Plains and Lower
Missouri Valley.
...Southern and Central Plains/Lower Missouri Valley...
The latest water vapor imagery shows a mid-level trough over the
Intermountain West, with southwesterly flow aloft from the southern
and central Rockies eastward into much of the Great Plains. A
shortwave trough appears to be located in central Kansas, close to
the position of a front oriented from southwest to northeast across
the central Plains. Near and to the southeast of the boundary,
surface dewpoints are in the 60s and lower 70s F, which is
contributing to moderate instability. The RAP shows an axis of
MLCAPE in the 1500 to 2500 J/kg range from central Kansas
northeastward into northwest Missouri and southern Iowa...see MCD
2312. Scattered strong to severe storms are ongoing along the
southwestern part of this corridor of moderate instability...see MCD
2311.
The 00Z sounding at Topeka has MLCAPE near 2000 J/kg with 0-6 km
shear around 20 knots, and a 0-3 km lapse rate just above 7.5 C/km.
RAP analysis suggests that deep-layer shear is stronger near the
front. The environment will support a continued severe threat this
evening. Severe wind gusts and isolated large hail will be the
primary threats. The line that is currently developing in northeast
Kansas may continue to have a severe threat later this evening as it
tracks northeastward into northwest Missouri and far southern Iowa.
A marginal wind-damage threat will extend southwestward along a
surface trough into parts of west Texas.
In the central High Plains, the western edge of moderate instability
extends westward into far western Kansas. Scattered strong storms
are ongoing near the Colorado-Kansas state line where the RAP has
MLCAPE around 1500 J/kg. The Goodland WSR-88D VWP has 0-6 km shear
around 50 knots, and the RAP has 700-500 mb lapse rates in western
Kansas near 7.5 C/km. This will support a supercell threat this
evening with a potential for isolated large hail. Severe wind gusts
will also be possible...see MCD 2313.
..Broyles.. 09/20/2026
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