Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 201, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Dec 15, 2021, 3:41 PM CST for 4 counties in Nebraska; Harrison County, Monona County, Iowa. It was in force for 64 min. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Dec 15, 2021, 3:41 PM CST (21:41 UTC)
- Expired
- Dec 15, 2021, 4:45 PM CST
- In force
- 64 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Tornado
- Possible
- Damage threat
- Destructive
- Hail
- 0.88 in
- Wind
- 80.0 mph
Counties Harrison County, IA, Monona County, IA, Burt County, NE, Cuming County, NE, Thurston County, NE, Washington County, NE
The radar
The Omaha radar (KOAX), 76 km from the middle of the area, began a volume at 21:41 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 15, 3:46 PM CST | TSTM WND DMG | 7 Ne Beemer, NE | DELAYED REPORT, TIME ESTIMATED FROM RADAR. REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN. |
| Dec 15, 3:53 PM CST | TORNADO | 2 Wsw Bancroft, NE | NUMEROUS LARGE PINE TREES UPROOTED. NUMEROUS HARDWOOD TREES LIMBS GREATER THAN 6 INCHES SNAPPED AND BROKEN OFF. WINDMILL COLLAPSED AT BASE. SHINGLES AND NAILED GUTTER TORN FROM HOME. DAMAGE WIDTH 10-20 YARDS. TORNADO DEVELOPED APPROXIMATELY 1.5 MILES SOUTH SOU |
| Dec 15, 3:56 PM CST | TSTM WND DMG | Oakland, NE | DELAYED REPORT, TIME ESTIMATED FROM RADAR. REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN. |
| Dec 15, 3:59 PM CST | TSTM WND GST 75 | 2 S Tekamah, NE | |
| Dec 15, 3:59 PM CST | TORNADO | 3 Nw Rosalie, NE | BARN ROOF COLLAPSE AND CAVED WALLS. PANELS FROM METAL OUTBUILDING REMOVED. WIDTH 10-15 YARDS. TORNADO ENTERED COUNTY 1/4 MILE SOUTH OF O AVENUE AND 25TH ROAD INTERSECTION. TORNADO REMAINED INTERMITTENTLY ON THE GROUND FOR 2 MILES ENDING NEAR COORDINATES 42.10, |
| Dec 15, 4:11 PM CST | TSTM WND DMG | Oakland, NE | REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Dec 15, 1:23 PM CST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 9.7 hours before the alert went out and 76 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2165 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 346 m²/s²
- 0-3 km storm-relative helicity
- 384 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
539
WUUS53 KOAX 152141
SVROAX
IAC085-133-NEC021-039-173-177-152245-
/O.NEW.KOAX.SV.W.0201.211215T2141Z-211215T2245Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Omaha/Valley Nebraska
341 PM CST Wed Dec 15 2021
The National Weather Service in Omaha has issued a
* Severe Thunderstorm Warning for...
Monona County in west central Iowa...
Northern Harrison County in southwestern Iowa...
Burt County in east central Nebraska...
Northeastern Cuming County in northeastern Nebraska...
Northwestern Washington County in east central Nebraska...
Thurston County in northeastern Nebraska...
* Until 445 PM CST.
* At 340 PM CST, severe thunderstorms were located along a line
extending from 4 miles northwest of Wisner to near West Point to 6
miles northeast of North Bend, moving northeast at 80 mph.
THESE ARE DESTRUCTIVE STORMS!
HAZARD...80 mph wind gusts and nickel size hail.
SOURCE...Trained weather spotters and emergency management have
reported widespread wind damage and measured winds to 80
mph with these storms.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
* Severe thunderstorms will be near...
Pender around 350 PM CST.
Lyons, Emerson and Bancroft around 355 PM CST.
Walthill, Craig and Macy around 400 PM CST.
Other locations in the path of these severe thunderstorms include
Tekamah, Whiting, Decatur and Onawa.
This includes Interstate 29 between mile markers 84 and 125.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 800 PM CST for southwestern
and west central Iowa...and northeastern and east central Nebraska.
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage! SEEK SHELTER NOW inside a sturdy structure and stay
away from windows! A Tornado Watch remains in effect until 800 PM
CST for southwestern and west central Iowa...and northeastern and
east central Nebraska.
&&
LAT...LON 4178 9556 4150 9643 4174 9644 4184 9653
4209 9683 4226 9682 4226 9673 4228 9672
4227 9635 4222 9633 4221 9567 4187 9567
4186 9556
TIME...MOT...LOC 2140Z 222DEG 68KT 4203 9697 4182 9674 4151 9667
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...0.88 IN
WIND THREAT...OBSERVED
MAX WIND GUST...80 MPH
$$
BLB1 follow-up statement
325
WWUS53 KOAX 152225
SVSOAX
Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
425 PM CST Wed Dec 15 2021
NEC021-039-173-177-152233-
/O.CAN.KOAX.SV.W.0201.000000T0000Z-211215T2245Z/
Burt NE-Cuming NE-Washington NE-Thurston NE-
425 PM CST Wed Dec 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR BURT...NORTHEASTERN CUMING...
NORTHWESTERN WASHINGTON AND THURSTON COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 800 PM CST for southwestern
and west central Iowa...and east central Nebraska.
LAT...LON 4178 9556 4161 9611 4166 9610 4169 9612
4170 9607 4174 9610 4180 9606 4190 9616
4192 9614 4197 9613 4221 9623 4221 9567
4187 9567 4186 9556
TIME...MOT...LOC 2223Z 233DEG 55KT 4233 9606 4169 9596
$$
IAC085-133-152245-
/O.CON.KOAX.SV.W.0201.000000T0000Z-211215T2245Z/
Monona IA-Harrison IA-
425 PM CST Wed Dec 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CST
FOR MONONA AND NORTHERN HARRISON COUNTIES...
At 423 PM CST, severe thunderstorms were located along a line
extending from 6 miles north of Hornick to near Mondamin, moving
northeast at 65 mph.
THESE ARE DESTRUCTIVE STORMS!
HAZARD...80 mph wind gusts and nickel size hail.
SOURCE...Radar indicated. This storm has a history of producing
significant wind damage.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
Locations impacted include...
Dunlap and nearby communities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 800 PM CST for southwestern
and west central Iowa...and east central Nebraska.
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage! SEEK SHELTER NOW inside a sturdy structure and stay
away from windows.
&&
LAT...LON 4178 9556 4161 9611 4166 9610 4169 9612
4170 9607 4174 9610 4180 9606 4190 9616
4192 9614 4197 9613 4221 9623 4221 9567
4187 9567 4186 9556
TIME...MOT...LOC 2223Z 233DEG 55KT 4233 9606 4169 9596
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...0.88 IN
WIND THREAT...OBSERVED
MAX WIND GUST...80 MPH
$$
BLBThe office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 15, 2:19 PM CST | Severe Thunderstorm Warning | OAX | Antelope, Boone, Butler, Colfax, Madison, Pierce and 2 more | 56 min |
| Dec 15, 2:26 PM CST | Severe Thunderstorm Warning | OAX | Butler, Gage, Jefferson, Lancaster, Saline, Saunders and 1 more | 64 min |
| Dec 15, 2:39 PM CST | Tornado Warning | OAX | Boone, Madison, Platte, Stanton | 24 min |
| Dec 15, 2:50 PM CST | Tornado Warning | OAX | Colfax, Platte | 40 min |
| Dec 15, 2:54 PM CST | Severe Thunderstorm Warning | OAX | Cass, Dodge, Douglas, Gage, Johnson, Lancaster and 5 more | 81 min |
| Dec 15, 2:59 PM CST | Tornado Warning | OAX | Butler, Colfax, Dodge, Platte | 31 min |
| Dec 15, 3:06 PM CST | Tornado Warning | OAX | Madison, Platte, Stanton | 24 min |
| Dec 15, 3:09 PM CST | Severe Thunderstorm Warning | OAX | Burt, Butler, Colfax, Cuming, Dodge, Saunders and 4 more | 51 min |
| Dec 15, 3:13 PM CST | Severe Thunderstorm Warning | OAX | Antelope, Cedar, Colfax, Knox, Madison, Pierce and 3 more | 62 min |
| Dec 15, 3:23 PM CST | Tornado Warning | OAX | Lancaster, Seward | 16 min |
| Dec 15, 3:25 PM CST | Tornado Warning | OAX | Colfax, Cuming, Stanton | 35 min |
| Dec 15, 3:29 PM CST | Tornado Warning | OAX | Madison, Stanton, Wayne | 31 min |
| Dec 15, 3:35 PM CST | Severe Thunderstorm Warning | OAX | Cass, Douglas, Johnson, Nemaha, Otoe, Pawnee and 3 more | 70 min |
| Dec 15, 3:45 PM CST | Tornado Warning | OAX | Douglas, Saunders | 30 min |
| Dec 15, 3:45 PM CST | Tornado Warning | OAX | Cuming, Thurston | 45 min |
| Dec 15, 3:54 PM CST | Tornado Warning | OAX | Dodge, Douglas, Washington | 28 min |
| Dec 15, 4:01 PM CST | Tornado Warning | OAX | Cass, Otoe | 14 min |
| Dec 15, 4:11 PM CST | Tornado Warning | OAX | Nemaha, Pawnee, Richardson | 34 min |
| Dec 15, 4:12 PM CST | Tornado Warning | OAX | Cass | 33 min |
| Dec 15, 4:16 PM CST | Tornado Warning | OAX | Washington | 17 min |
| Dec 15, 5:08 PM CST | Blowing Dust Advisory | OAX | Cass, Gage, Jefferson, Johnson, Lancaster, Nemaha and 5 more | 4 hr |
| Dec 15, 3:55 PM CST | Severe Thunderstorm Warning | OAX | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more | 80 min |
| Dec 15, 4:21 PM CST | Tornado Warning | OAX | Pottawattamie | 24 min |
| Dec 15, 4:30 PM CST | Tornado Warning | OAX | Mills, Montgomery, Pottawattamie | 30 min |
| Dec 15, 4:31 PM CST | Tornado Warning | OAX | Harrison, Monona, Shelby | 13 min |
| Dec 15, 4:37 PM CST | Tornado Warning | OAX | Harrison, Shelby | 23 min |
| Dec 15, 4:46 PM CST | Tornado Warning | OAX | Pottawattamie, Shelby | 20 min |
| Dec 15, 4:54 PM CST | Tornado Warning | OAX | Montgomery, Page | 15 min |
| Dec 15, 4:55 PM CST | Tornado Warning | OAX | Shelby | 14 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2021Severe Thunderstorm Warnings in Iowa, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.