612 
WUUS53 KOAX 182158
SVROAX
IAC133-NEC021-173-182230-
/O.NEW.KOAX.SV.W.0176.260518T2158Z-260518T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Omaha/Valley Nebraska
458 PM CDT Mon May 18 2026

The National Weather Service in Omaha has issued a

* Severe Thunderstorm Warning for...
  Western Monona County in west central Iowa...
  Northeastern Burt County in east central Nebraska...
  Southeastern Thurston County in northeastern Nebraska...

* Until 530 PM CDT.

* At 458 PM CDT, a severe thunderstorm was located over Decatur, or
  17 miles north of Tekamah, moving northeast at 65 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Whiting around 505 PM CDT.

This includes Interstate 29 between mile markers 107 and 125.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4221 9590 4192 9612 4191 9615 4192 9624
      4201 9619 4201 9623 4203 9622 4204 9624
      4205 9631 4202 9631 4202 9636 4221 9631
TIME...MOT...LOC 2158Z 210DEG 58KT 4203 9623 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CA

012 
WWUS53 KOAX 182211
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
511 PM CDT Mon May 18 2026

NEC021-173-182221-
/O.CAN.KOAX.SV.W.0176.000000T0000Z-260518T2230Z/
Burt NE-Thurston NE-
511 PM CDT Mon May 18 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BURT AND
SOUTHEASTERN THURSTON COUNTIES IS CANCELLED...

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

&&

LAT...LON 4221 9590 4212 9600 4209 9616 4213 9626
      4221 9631
TIME...MOT...LOC 2211Z 210DEG 58KT 4221 9609 

$$

IAC133-182230-
/O.CON.KOAX.SV.W.0176.000000T0000Z-260518T2230Z/
Monona IA-
511 PM CDT Mon May 18 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHWESTERN MONONA COUNTY...

At 511 PM CDT, a severe thunderstorm was located over Hornick, or 25
miles southeast of Sioux City, moving northeast at 65 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
northwestern Monona County, including the following locations...
Rodney.

This includes Interstate 29 between mile markers 120 and 125.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4221 9590 4212 9600 4209 9616 4213 9626
      4221 9631
TIME...MOT...LOC 2211Z 210DEG 58KT 4221 9609 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CA

012 
WWUS53 KOAX 182211
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
511 PM CDT Mon May 18 2026

NEC021-173-182221-
/O.CAN.KOAX.SV.W.0176.000000T0000Z-260518T2230Z/
Burt NE-Thurston NE-
511 PM CDT Mon May 18 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BURT AND
SOUTHEASTERN THURSTON COUNTIES IS CANCELLED...

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

&&

LAT...LON 4221 9590 4212 9600 4209 9616 4213 9626
      4221 9631
TIME...MOT...LOC 2211Z 210DEG 58KT 4221 9609 

$$

IAC133-182230-
/O.CON.KOAX.SV.W.0176.000000T0000Z-260518T2230Z/
Monona IA-
511 PM CDT Mon May 18 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHWESTERN MONONA COUNTY...

At 511 PM CDT, a severe thunderstorm was located over Hornick, or 25
miles southeast of Sioux City, moving northeast at 65 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
northwestern Monona County, including the following locations...
Rodney.

This includes Interstate 29 between mile markers 120 and 125.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4221 9590 4212 9600 4209 9616 4213 9626
      4221 9631
TIME...MOT...LOC 2211Z 210DEG 58KT 4221 9609 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CA

323 
WWUS53 KOAX 182219
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
519 PM CDT Mon May 18 2026

IAC133-182229-
/O.CAN.KOAX.SV.W.0176.000000T0000Z-260518T2230Z/
Monona IA-
519 PM CDT Mon May 18 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MONONA COUNTY IS
CANCELLED...

The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

&&

LAT...LON 4221 9590 4212 9600 4209 9616 4213 9626
      4221 9631
TIME...MOT...LOC 2216Z 210DEG 58KT 4233 9600 

$$

CA