Tornado Warning 22, NWS Omaha, NE

293 
WWUS53 KOAX 180158
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
858 PM CDT Sun May 17 2026

NEC025-180207-
/O.CAN.KOAX.TO.W.0022.000000T0000Z-260518T0215Z/
Cass NE-
858 PM CDT Sun May 17 2026

...THE TORNADO WARNING FOR NORTHEASTERN CASS COUNTY IS CANCELLED...

The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1100 PM CDT for southwestern
Iowa...and southeastern Nebraska.

&&

LAT...LON 4095 9583 4098 9583 4100 9586 4101 9587
      4104 9586 4116 9568 4116 9548 4113 9548
TIME...MOT...LOC 0157Z 242DEG 45KT 4105 9571 

$$

IAC129-180215-
/O.CON.KOAX.TO.W.0022.000000T0000Z-260518T0215Z/
Mills IA-
858 PM CDT Sun May 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
NORTHWESTERN MILLS COUNTY...

At 857 PM CDT, a confirmed tornado was located over Glenwood, or 11
miles southeast of Offutt AFB, moving northeast at 50 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Public confirmed tornado on the south side of Plattsmouth 
         around 8:48 PM.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Glenwood, Pacific Junction, Silver City, and Mineola.

This includes Interstate 29 between mile markers 29 and 35.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4095 9583 4098 9583 4100 9586 4101 9587
      4104 9586 4116 9568 4116 9548 4113 9548
TIME...MOT...LOC 0157Z 242DEG 45KT 4105 9571 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

BLB

281 
WWUS53 KOAX 180207
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
907 PM CDT Sun May 17 2026

IAC129-180215-
/O.CON.KOAX.TO.W.0022.000000T0000Z-260518T0215Z/
Mills IA-
907 PM CDT Sun May 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR NORTH
CENTRAL MILLS COUNTY...

At 907 PM CDT, a severe thunderstorm capable of producing a tornado
was located 5 miles north of Hastings, or 17 miles west of Red Oak,
moving northeast at 60 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation. This storm has a history of 
         producing a tornado near Plattsmouth.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Silver City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4105 9563 4111 9569 4116 9560 4116 9548
      4113 9548
TIME...MOT...LOC 0207Z 243DEG 50KT 4110 9553 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

BLB

Area Forecast Discussion
National Weather Service Omaha/Valley NE
637 PM CDT Sun May 17 2026

.KEY MESSAGES...

- Sunday and Monday will be days to watch very closely if you
  live within the Omaha area of forecast responsibility.
  Multiple rounds of severe thunderstorms are expected bringing
  the potential for large hail, damaging winds, tornadoes and
  flash flooding.

&&

.DISCUSSION...
Issued at 142 PM CDT Sun May 17 2026

This afternoon, an elongated sfc low will be in place from SE
Colorado/SW Kansas up into the Dakotas. A dryline is set up toward
the KS/CO border and a warm front is located across central
Nebraska. Temps are currently in the 80s in the warm sector with
dewpoints in the mid-60s. SBCAPE values of 3500+ J/kg, MLCAPE values
of 3000+ J/kg and DCAPE values of 1200+ J/kg are expected. Expect
good instability through the afternoon/evening and fairly steep
lapse rates, particularly down into central and eastern Nebraska.

Portions of northeastern Nebraska in particular are showing
potential for an environment favorable for strong updrafts and
potentially some longer lived supercells. Any storms that are able
to get going and become sustained in that favorable environment
would have the best chance of developing a tornado, with some
potential to be strong. Storms are expected to develop into a line,
posing a damaging wind threat along with hail and tornadoes
possible.

Heading into Monday, a broad trough extends from the PACNW up into
eastern Nebraska/western Iowa. Another system moves in through the
day, bringing additional chances for strong to severe storms,
particularly for areas along and south of Interstate 80. There still
remain some questions as to how far north the warm front and system
get. The environment is expected to be primed with strong
instability and deep layer shear conducive for supercell development
and maintenance. With this type of set up, large hail and damaging
winds are to be expected in addition to the possibility for a few
strong and potentially long-lived tornadoes. Flash flooding will be
possible, particularly in areas that have also received a few inches
of rain over the last 48 hours.

Expect cooler temperatures for much of the week as a cold front
pushes into the region Monday. Tuesday and Wednesday bring relief
from the recent storms.

&&

.AVIATION /00Z TAFS THROUGH 00Z TUESDAY/...
Issued at 637 PM CDT Sun May 17 2026

A line of severe thunderstorms is observed at this hour from
near KOFK to KJYR to KHJH. These storms have a history of
producing large hail, damaging winds, and tornadoes. The line
will continue progressing eastward this evening, eventually
turning into more of a damaging wind threat as it approaches
KOMA and KLNK. Have continued mentions of -TSRA at terminals
this evening, refining timing at KOMA with the line expected to
arrive by 01z per latest model guidance. Expect frequent updates
and amendments. Background winds will switch to the west
northwest once the line moves through, and remaining at 12 kts
or less after 06z. Ceilings will deteriorate to MVFR and IFR at
terminals tonight behind the line of storms and persist through
much of the TAF cycle. After 20z, will see more redevelopment of
showers and thunderstorms, with chances over 50% late in the
TAF period. These storms will once again become strong to severe
with all hazards possible.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...Flood Watch through Tuesday morning for NEZ065-066-068-078-
     088>093.
IA...None.

&&

DISCUSSION...ANW
AVIATION...Castillo

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
151 PM CDT Sun May 17 2026

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-181900-
Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont-Page-
Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison-Stanton-
Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler-Saunders-Douglas-
Sarpy-Seward-Lancaster-Cass-Otoe-Saline-Jefferson-Gage-Johnson-
Nemaha-Pawnee-Richardson-
151 PM CDT Sun May 17 2026

This Hazardous Weather Outlook is for southwest Iowa, west central
Iowa, east central Nebraska, northeast Nebraska and southeast
Nebraska.

.DAY ONE...This afternoon and tonight.

Strong to severe thunderstorms are expected to develop after 4 PM,
initially across northeast Nebraska before spreading south and east.
Large hail (2+ inches), damaging wind gusts, and a few tornadoes
(possibly strong) are the expected hazards. Heavy rain due to
several storms moving over the same area may result in some concerns
for flash flooding. A Tornado Watch has been issued for the northern
portion of the outlook area through 10 PM.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Additional strong to severe storms are forecast for Monday
afternoon, with an increased threat for large hail (2-4+ inches) and
strong tornadoes. Additional chances for heavy rainfall on top of
what has already fallen since Friday night will result in a potential
for flash flooding, particularly for portions of southeastern
Nebraska. Chances to see severe storm activity is maximized over
southeast Nebraska.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Any reports of hail, strong winds,
tornadoes, flooding or damage are greatly appreciated today and
Monday.

Preliminary Local Storm Report
National Weather Service Omaha/Valley NE
831 PM CDT Sun May 17 2026

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

0826 PM     Tstm Wnd Gst     4 WSW Murdock           40.90N 96.35W
05/17/2026  M59 MPH          Cass               NE   Public

            Personal Weather Station.

&&

DAC

Preliminary Local Storm Report
National Weather Service Omaha/Valley NE
833 PM CDT Sun May 17 2026

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

0827 PM     Tstm Wnd Gst     7 ENE Omaha             41.30N 95.89W
05/17/2026  M63 MPH          Douglas            NE   ASOS

            ASOS KOMA reporting peak gust of 63 mph at
            827pm.

&&

JC

Preliminary Local Storm Report
National Weather Service Omaha/Valley NE
836 PM CDT Sun May 17 2026

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

0755 PM     Tstm Wnd Dmg     1 S Crete               40.61N 96.96W
05/17/2026                   Saline             NE   Storm Chaser

            Large trees and limbs down on roads. Time is
            estimated.

&&

DAC

Preliminary Local Storm Report
National Weather Service Omaha/Valley NE
840 PM CDT Sun May 17 2026

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

0833 PM     Tstm Wnd Gst     1 SSE Missouri Valley   41.54N 95.89W
05/17/2026  M65 MPH          Harrison           IA   Public

            Personal Weather Station.

&&

DAC

Preliminary Local Storm Report
National Weather Service Omaha/Valley NE
841 PM CDT Sun May 17 2026

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

0837 PM     Tstm Wnd Gst     La Vista                41.18N 96.04W
05/17/2026  E70 MPH          Sarpy              NE   Trained Spotter

            Spotter report of 60 to 70 mph estimated
            wind gusts.

&&

JC

Preliminary Local Storm Report
National Weather Service Omaha/Valley NE
844 PM CDT Sun May 17 2026

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

0720 PM     Tstm Wnd Dmg     Fairbury                40.14N 97.18W
05/17/2026                   Jefferson          NE   Storm Chaser

            Widespread tree branches down, 5 inch
            diameter. Time is estimated.

&&

DAC