Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 202, NWS Hastings, NE

December 15, 202113 counties in Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Dec 15, 2021, 2:08 PM CST for 13 counties in Nebraska. It was in force for 52 min. 35 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, 2:08 PM CST (20:08 UTC)
Expired
Dec 15, 2021, 3:00 PM CST
In force
52 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Tornado
Possible
Damage threat
Considerable
Hail
0.88 in
Wind
70.0 mph

Counties Clay County, NE, Fillmore County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Polk County, NE, Sherman County, NE, Thayer County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 88 km from the middle of the area, began a volume at 20:12 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

TimeReportWhereRemark
Dec 15, 2:10 PM CSTTSTM WND GST 85Grand Island Airport, NE
Dec 15, 2:11 PM CSTTSTM WND DMGGiltner, NESOCIAL MEDIA PHOTO OF SIGNIFICANT ROOF AND SIDING DAMAGE TO OLD BRICK BUILDING DOWNTOWN. TIME LINKED TO PREVIOUSLY ISSUED REPORT OF ESTIMATED 80-90 MPH WINDS.
Dec 15, 2:11 PM CSTTSTM WND GST 85Giltner, NEESTIMATED 80-90 MPH WINDS.
Dec 15, 2:13 PM CSTHAIL 0.75Saint Paul, NEREPORT FROM MPING.
Dec 15, 2:14 PM CSTTORNADO1 S Edgar, NETORNADO ON THE GROUND 1S OF EDGAR PER EM.
Dec 15, 2:15 PM CSTTSTM WND GST 692 Nw Superior, NE
Dec 15, 2:15 PM CSTTORNADO1 Sw Aurora, NEDELAYED REPORT. SPOTTER NETWORK REPORT OF TORNADO CAUSING DAMAGE IN THIS AREA. PHOTOS RECEIVED VIA TWITTER SUPPORT A POSSIBLE TORNADO IN THIS AREA.
Dec 15, 2:15 PM CSTTORNADO4 Ssw Aurora, NENWS DAMAGE SURVEY FOUND PRELIMINARY LOW END EF-1 TORNADO TRACK THAT BEGAN EAST OF GILTNER AND ENDED IN SOUTHWEST SIDE OF AURORA.
Dec 15, 2:19 PM CSTTSTM WND DMGAurora, NEREPORTS OF VARIOUS WIND DAMAGE IN SOUTHWEST PART OF AURORA INCLUDING LARGE TREE DOWN, STADIUM BLEACHERS OVERTURNED, SOME STRUCTURAL DAMAGE TO VARIOUS BUILDINGS. TIME ESTIMATED FROM RADAR.
Dec 15, 2:23 PM CSTTSTM WND DMG4 Ne Doniphan, NEREPORT OF PICKUP AND TRAILER OVERTURNED ON WESTBOUND I-80 EAST OF LOCUST EXIT.
Dec 15, 2:23 PM CSTTSTM WND DMGOng, NEPOWERLINES DOWN IN TOWN. TIME ESTIMATED FROM RADAR.
Dec 15, 2:23 PM CSTTSTM WND GST 706 Ese Clay Center, NE70MPH WINDS WITH HEAVY RAINS VIS WAS 0 WHEN RAIN HIT.
Dec 15, 2:25 PM CSTTSTM WND DMG2 S Davenport, NEDELAYED REPORT. PHOTOS RECEIVED VIA FACEBOOK SHOWING DAMAGE TO PIVOTS. TIME ESTIMATED FROM RADAR AND OTHER NEARBY REPORTS.
Dec 15, 2:25 PM CSTTSTM WND DMGHampton, NEESTIMATED 65 MPH WINDS WITH WINDOWS BLOWN OUT OF VEHICLES ON MAIN STREET. TIME ESTIMATED FROM RADAR.
Dec 15, 2:25 PM CSTTSTM WND DMGSutton, NETREES AND POWERLINES DOWN IN SUTTON FROM ESTIMATED 80 MPH WINDS. TIME ESTIMATED FROM RADAR.
Dec 15, 2:25 PM CSTHAIL 1.753 Ene Marquette, NEEM RELAYED REPORT OF HAIL UP TO GOLF BALL SIZE THAT SIGNIFICANTLY DAMAGED HOUSE SIDING. TIME ESTIMATED FROM RADAR.
Dec 15, 2:28 PM CSTTSTM WND GST 831 Nne Davenport, NE
Dec 15, 2:29 PM CSTTSTM WND GST 606 Wnw Fullerton, NE
Dec 15, 2:29 PM CSTTSTM WND GST 842 W Shickley, NE
Dec 15, 2:30 PM CSTTSTM WND DMG6 Ssw Polk, NEDELAYED SOCIAL MEDIA REPORT OF DAMAGE TO POWERLINES AND LARGE TREES AND POSSIBLY A HOUSE ROUGHLY NEAR ROAD 21 AND ROAD B. POSSIBLE TORNADO DAMAGE BUT CANNOT BE CONFIRMED AT THIS TIME. TIME ESTIMATED FROM RADAR.
Dec 15, 2:30 PM CSTTORNADO3 Ne Marquette, NETORNADO PICTURE ON TWITTER. LOCATION IS APPROXIMATE AND PENDING SURVEY.
Dec 15, 2:30 PM CSTTORNADO3 Sse Hordville, NENWS DAMAGE SURVEY FOUND PRELIMINARY EF-1 DAMAGE FROM A TORNADO THAT TRACKED FROM ROUGHLY 7 SSW OF HORDVILLE TO 2 N OF POLK. ADDITIONAL INFORMATION WILL BE ADDED ONCE SURVEY IS COMPLETE.
Dec 15, 2:31 PM CSTTSTM WND DMG3 Se Hordville, NEIRRIGATION PIVOTS OVERTURNED IN THE AREA OF 25 AND X ROAD. POSSIBLE TORNADO DAMAGE BUT UNCONFIRMED AT THIS TIME. TIME ESTIMATED FROM RADAR.
Dec 15, 2:32 PM CSTTSTM WND DMG4 N Bradshaw, NEIRRIGATION PIVOT DAMAGE. TIME ESTIMATED FROM RADAR.
Dec 15, 2:32 PM CSTTSTM WND GST 584 N Central City, NE
Dec 15, 2:34 PM CSTTSTM WND DMG1 N Fullerton, NEDELAYED REPORT VIA TWITTER. COMPLETE LOSS OF ROOF OF SHED. SMALL OUTBUILDING DESTROYED. TIME ESTIMATED FROM RADAR.
Dec 15, 2:36 PM CSTTSTM WND DMG2 E Polk, NEDAMAGE REPORTED ALONG AND NEAR HIGHWAY 66 FROM 2 TO 4 MILES EAST OF POLK. MAINLY NUMEROUS IRRIGATION PIVOTS AND A FEW OUTBUILDINGS. TIME ESTIMATED FROM RADAR DATA. UNKNOWN IF TORNADO DAMAGE.
Dec 15, 2:37 PM CSTTSTM WND DMG1 Ese Geneva, NEDELAYED REPORT FROM WED. SEMI TRUCK BLOWN OVER ON HIGHWAY 81 AND ALSO BRANCH AND TREE DAMAGE IN TOWN.
Dec 15, 2:37 PM CSTTSTM WND DMGHebron, NE2 LARGE PINE TREES UPROOTED AT THE COURTHOUSE.
Dec 15, 2:40 PM CSTTSTM WND DMGBruning, NECARPORT PICKED UP BY WINDS AND BLEW IT INTO SOME POWER LINES. 3-4 INCH LIMBS ARE DOWN IN TOWN ALSO. BLOWING DUST ALSO DROPPING VIS TO 1/2SM.
Dec 15, 2:40 PM CSTTORNADO4 Ne Polk, NENWS DAMAGE SURVEY FOUND PRELIMINARY EF-1 DAMAGE FROM A TORNADO THAT TRACKED FROM ROUGHLY 2 SE OF POLK TO 6 W OF OSCEOLA. ADDITIONAL INFORMATION WILL BE ADDED ONCE SURVEY IS COMPLETE.
Dec 15, 2:48 PM CSTTSTM WND GST 60Osceola, NEPEA SIZED HAIL WITH 60-70MPH WINDS.
Dec 15, 2:50 PM CSTTSTM WND DMG5 S Waco, NEPIVOTS OVERTURNED AND BARN DAMAGED IN AREA. TIME ESTIMATED FROM RADAR.
Dec 15, 2:52 PM CSTTSTM WND GST 581 W Stromsburg, NE
Dec 15, 3:00 PM CSTTSTM WND GST 601 Ne Gresham, NE

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.

IssuedProductOfficeLasted
Dec 15, 1:23 PM CSTTornado WatchSPC7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.1 hours before the alert went out and 138 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.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2021-12-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2021-12-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 346 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted.

297 
WUUS53 KGID 152008
SVRGID
NEC035-059-077-079-081-093-121-125-129-143-163-169-185-152100-
/O.NEW.KGID.SV.W.0202.211215T2008Z-211215T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Hastings NE
208 PM CST Wed Dec 15 2021

The National Weather Service in Hastings has issued a

* Severe Thunderstorm Warning for...
  Eastern Greeley County in central Nebraska...
  Nance County in central Nebraska...
  Hamilton County in south central Nebraska...
  Polk County in east central Nebraska...
  Eastern Hall County in south central Nebraska...
  Clay County in south central Nebraska...
  Nuckolls County in south central Nebraska...
  York County in east central Nebraska...
  Fillmore County in south central Nebraska...
  Thayer County in south central Nebraska...
  Merrick County in central Nebraska...
  East central Sherman County in central Nebraska...
  Howard County in central Nebraska...

* Until 300 PM CST.

* At 207 PM CST, severe thunderstorms were located along a line
  extending from Ashton to near Giltner to near Bostwick, moving
  northeast at 85 mph.

  HAZARD...70 mph wind gusts and nickel size hail.

  SOURCE...Trained weather spotters.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near...
  Grand Island, Giltner, Phillips and Farwell around 210 PM CST.
  Aurora, Nelson, Chapman, Elba and Cotesfield around 215 PM CST.
  Marquette, Ruskin, Oak and Nora around 220 PM CST.
  Central City, Greeley, Davenport, Wolbach and Hordville around 225 
  PM CST.

Other locations in the path of these severe thunderstorms include
Clarks, Polk, Carleton, Spalding, Shickley, Bruning, Strang, Geneva,
Osceola, Silver Creek, Ohiowa and Milligan.

This includes Interstate 80 between mile markers 313 and 365.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage. SEEK SHELTER NOW inside a sturdy structure and stay 
away from windows! 

Intense thunderstorm lines can produce brief tornadoes and 
widespread significant wind damage. Although a tornado is not 
immediately likely, it is best to move to an interior room on the 
lowest floor of a building. These storms may cause serious injury 
and significant property damage.

A Tornado Watch remains in effect until 800 PM CST for south central,
central and east central Nebraska.

&&

LAT...LON 4001 9823 4077 9830 4123 9893 4174 9830
      4148 9829 4153 9771 4140 9770 4139 9760
      4133 9760 4139 9737 4000 9737
TIME...MOT...LOC 2007Z 226DEG 72KT 4124 9879 4082 9823 4001 9815 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Thies
3 follow-up statements
438 
WWUS53 KGID 152031
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
231 PM CST Wed Dec 15 2021

NEC079-163-152039-
/O.CAN.KGID.SV.W.0202.000000T0000Z-211215T2100Z/
Sherman NE-Hall NE-
231 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SHERMAN AND
EASTERN HALL COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled. However, non 
thunderstorm wind gusts of 60 to 70 MPH, or greater, will remain 
possible through the afternoon and early evening.

A Tornado Watch remains in effect until 800 PM CST for south central,
central and east central Nebraska.

LAT...LON 4001 9789 4083 9815 4153 9856 4174 9830
      4148 9829 4153 9771 4140 9770 4139 9760
      4133 9760 4139 9737 4000 9737
TIME...MOT...LOC 2029Z 228DEG 55KT 4150 9842 4105 9789 4002 9781 

$$

NEC035-059-077-081-093-121-125-129-143-169-185-152100-
/O.CON.KGID.SV.W.0202.000000T0000Z-211215T2100Z/
Greeley NE-Clay NE-Nuckolls NE-Nance NE-York NE-Hamilton NE-
Fillmore NE-Thayer NE-Merrick NE-Polk NE-Howard NE-
231 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CST
FOR EASTERN GREELEY...EASTERN CLAY...EASTERN NUCKOLLS...NANCE...
YORK...HAMILTON...FILLMORE...THAYER...MERRICK...POLK AND NORTHEASTERN
HOWARD COUNTIES...

At 229 PM CST, severe thunderstorms were located along a line
extending from 6 miles southeast of Greeley to near Hordville to near
Byron, moving northeast at 65 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...Trained weather spotters.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

These severe storms will be near...
  Polk and Hordville around 235 PM CST.
  Clarks around 240 PM CST.
  Hebron and Stromsburg around 245 PM CST.
  Osceola, Silver Creek, Belvidere and Gilead around 250 PM CST.
  Bruning and Alexandria around 255 PM CST.
  Ohiowa around 300 PM CST.

Other locations impacted by these severe thunderstorms include
Thayer.

This includes Interstate 80 between mile markers 325 and 365.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for south central,
central and east central Nebraska.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 4001 9789 4083 9815 4153 9856 4174 9830
      4148 9829 4153 9771 4140 9770 4139 9760
      4133 9760 4139 9737 4000 9737
TIME...MOT...LOC 2029Z 228DEG 55KT 4150 9842 4105 9789 4002 9781 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Thies
218 
WWUS53 KGID 152043
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
243 PM CST Wed Dec 15 2021

NEC035-077-093-129-152052-
/O.CAN.KGID.SV.W.0202.000000T0000Z-211215T2100Z/
Greeley NE-Clay NE-Nuckolls NE-Howard NE-
243 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GREELEY...EASTERN
CLAY...EASTERN NUCKOLLS AND NORTHEASTERN HOWARD COUNTIES IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled. However, non 
thunderstorm wind gusts of 60 to 70 MPH, or greater, will continue 
this afternoon and evening.

A Tornado Watch remains in effect until 800 PM CST for south central,
central and east central Nebraska.

LAT...LON 4001 9775 4105 9783 4148 9828 4153 9771
      4140 9770 4139 9760 4133 9760 4133 9759
      4134 9758 4139 9737 4000 9737
TIME...MOT...LOC 2042Z 227DEG 63KT 4152 9800 4118 9770 4002 9757 

$$

NEC059-081-121-125-143-169-185-152100-
/O.CON.KGID.SV.W.0202.000000T0000Z-211215T2100Z/
Nance NE-York NE-Hamilton NE-Fillmore NE-Thayer NE-Merrick NE-
Polk NE-
243 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CST
FOR NANCE...YORK...NORTHEASTERN HAMILTON...FILLMORE...THAYER...
NORTHEASTERN MERRICK AND POLK COUNTIES...

At 242 PM CST, severe thunderstorms were located along a line
extending from near Belgrade to 6 miles northwest of Stromsburg to
near Chester, moving northeast at 75 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...Trained weather spotters.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

These severe storms will be near...
  Osceola and Silver Creek around 250 PM CST.
  Alexandria around 300 PM CST.

Other locations impacted by these severe thunderstorms include
Thayer.

This includes Interstate 80 between mile markers 342 and 365.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for south central,
central 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.
 
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 4001 9775 4105 9783 4148 9828 4153 9771
      4140 9770 4139 9760 4133 9760 4133 9759
      4134 9758 4139 9737 4000 9737
TIME...MOT...LOC 2042Z 227DEG 63KT 4152 9800 4118 9770 4002 9757 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Thies
301 
WWUS53 KGID 152059
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
259 PM CST Wed Dec 15 2021

NEC059-081-121-125-143-169-185-152109-
/O.EXP.KGID.SV.W.0202.000000T0000Z-211215T2100Z/
Nance NE-York NE-Hamilton NE-Fillmore NE-Thayer NE-Merrick NE-
Polk NE-
259 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NANCE...YORK...NORTHEASTERN
HAMILTON...FILLMORE...THAYER...NORTHEASTERN MERRICK AND POLK COUNTIES
WILL EXPIRE AT 300 PM CST...
    
The storms which prompwinds are still possible with these 
thunderstormsted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However 60 to 70 
MPH non thunderstorm wind gusts will continue this afternoon and 
evening.

A Tornado Watch remains in effect until 800 PM CST for south central,
central and east central Nebraska.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Hastings.

LAT...LON 4001 9775 4105 9783 4148 9828 4153 9771
      4140 9770 4139 9760 4133 9760 4133 9759
      4134 9758 4139 9737 4000 9737
TIME...MOT...LOC 2059Z 270DEG 72KT 4172 9772 4138 9742 4022 9729 

$$

Thies

The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 15, 12:54 PM CSTSevere Thunderstorm Warning Considerable damage threatGIDFranklin, Furnas, Harlan, Kearney, Phelps, Webster36 min
Dec 15, 1:21 PM CSTSevere Thunderstorm Warning Considerable damage threatGIDAdams, Buffalo, Clay, Franklin, Hall, Hamilton and 7 more54 min
Dec 15, 1:30 PM CSTTornado WarningGIDAdams, Franklin, Webster15 min
Dec 15, 1:41 PM CSTDust Storm WarningGIDBuffalo, Dawson, Furnas, Gosper, Harlan, Kearney and 1 more94 min
Dec 15, 1:43 PM CSTTornado WarningGIDAdams17 min
Dec 15, 1:45 PM CSTTornado WarningGIDAdams, Clay, Webster15 min
Dec 15, 1:45 PM CSTTornado WarningGIDBuffalo, Hall, Howard15 min
Dec 15, 1:57 PM CSTTornado WarningGIDAdams, Hall, Hamilton, Merrick18 min
Dec 15, 2:03 PM CSTTornado WarningGIDClay, Hamilton12 min
Dec 15, 2:14 PM CSTTornado WarningGIDHamilton, Merrick, Polk, York16 min
Dec 15, 2:17 PM CSTBlowing Dust WarningGIDFranklin, Furnas, Harlan, Nuckolls, Thayer, Webster6 hr
Dec 15, 2:22 PM CSTSevere Thunderstorm Warning Destructive damage threatGIDHamilton, Howard, Merrick, Nance, Polk, York38 min
Dec 15, 2:32 PM CSTTornado WarningGIDHamilton, Merrick, Nance, Polk13 min
Dec 15, 2:39 PM CSTTornado WarningGIDNance9 min
Dec 15, 2:43 PM CSTTornado WarningGIDMerrick, Polk17 min
Dec 15, 2:45 PM CSTTornado WarningGIDPolk, York15 min
Dec 15, 4:31 PM CSTSnow Squall WarningGIDBuffalo, Dawson, Gosper, Phelps59 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 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.