Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 200, NWS Omaha, NE

December 15, 20219 counties in Nebraska; 4 counties in Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Dec 15, 2021, 3:35 PM CST for 9 counties in Nebraska; 4 counties in Iowa. It was in force for 70 min. 60 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, 3:35 PM CST (21:35 UTC)
Expired: Dec 15, 2021, 4:45 PM CST
In force: 70 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Tornado: Possible
Damage threat: Destructive
Hail: 0.75 in
Wind: 80.0 mph

Counties Fremont County, IA, Harrison County, IA, Mills County, IA, Pottawattamie County, IA, Cass County, NE, Douglas County, NE, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Sarpy County, NE, Washington County, NE

The radar

The Omaha radar (KOAX), 104 km from the middle of the area, began a volume at 21:34 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, 3:55 PM CST	TORNADO	2 Wsw Avoca, NE	A VERY NARROW TORNADO, APPROXIMATELY 20 YARDS WIDE, WAS WITNESSED AND CAUSED SUBSTANTIAL DAMAGE TO VEHICLES AND FARM EQUIPMENT WHILE DESTROYING A LARGE SHED NEAR ITS ONSET AND PROCEEDED TO CAUSE MINOR DAMAGE FOR APPROXIMATELY 3 MILES TO THE NORTHEAST BEFORE DI
Dec 15, 3:56 PM CST	TSTM WND GST 70	3 Wnw Otoe, NE
Dec 15, 3:56 PM CST	TSTM WND GST 70	3 W Otoe, NE
Dec 15, 4:01 PM CST	TSTM WND DMG	5 Ssw Union, NE	BARN AND GRAIN BINS DESTROYED. TREES SNAPPED. ADDITIONAL DAMAGE TO TREES AND POWER LINES ACROSS OTHER PARTS OF OTOE COUNTY AS WELL.
Dec 15, 4:05 PM CST	NON-TSTM WND GST 48	3 Nw Nebraska City, NE	MESONET STATION NB047 NEBRASKA CITY 3NW.
Dec 15, 4:05 PM CST	TORNADO	3 Ne Nehawka, NE	ROOF REMOVED FROM HOUSE. ROOF OVER GARAGE UPLIFTED AND DISPLACED. HOUSE MOVED SLIGHTLY ON FOUNDATION. SEVERAL LARGE PINES & OAK TREES SNAPPED.
Dec 15, 4:05 PM CST	TORNADO	4 S Union, NE	A BRIEF EF-1 TORNADO SNAPPED POWER POLES. SWIRLING WAS NOTED IN CORN FIELDS NORTH AND SOUTH OF COUNTY ROAD C.
Dec 15, 4:05 PM CST	TORNADO	4 S Union, NE	A BRIEF EF-1 TORNADO SNAPPED POWER POLES. SWIRLING WAS NOTED IN CORN FIELDS NORTH AND SOUTH OF COUNTY ROAD C.
Dec 15, 4:06 PM CST	TSTM WND DMG	1 Nnw Du Bois, NE	DELAYED REPORT: SHED BLOWN OVER AND CRUSHED A COW.
Dec 15, 4:06 PM CST	TORNADO	2 Sse Murray, NE	A BRIEF EF-1 TORNADO CAUSED DAMAGE TO POWER POLES AND TOTAL DESTRUCTION OF A FARM OUTBUILDING NEAR HIGHWAY 75 AND BAXTER LOOP.
Dec 15, 4:06 PM CST	TORNADO	3 Ne Nehawka, NE	CORRECTS PREVIOUS TORNADO REPORT FROM 3 NE NEHAWKA. TORNADO TRACK COMBINED WITH PREVIOUSLY SEPARATE TRACK THAT STARTED 2 SSE OF MURRAY, OR 3 SW OF BEAVER LAKE. TORNADO REMOVED ROOF FROM HOUSE. ROOF OVER GARAGE UPLIFTED AND DISPLACED. HOUSE MOVED SLIGHTLY ON FO
Dec 15, 4:06 PM CST	TORNADO	3 Wsw Du Bois, NE	HALF OF LARGE OUTBUILDING DESTROYED.
Dec 15, 4:07 PM CST	TORNADO	3 E Pawnee City, NE	A BRIEF TORNADO DESTROYED SEVERAL OUTBUILDINGS AND REMOVED A WRAP-AROUND PORCH FROM A HOUSE.
Dec 15, 4:08 PM CST	TSTM WND DMG	2 Ene Murray, NE	ROOF BLOWN AWAY AT BEAVER LAKE.
Dec 15, 4:09 PM CST	TORNADO	3 E Murray, NE	THREE WITNESSES OBSERVED TORNADO FORM SOUTH SIDE OF LAKE. ROOF TAKEN OFF RESIDENCE. SEVERAL HARDWOOD TREES SNAPPED AND PINE TREES UPROOTED OR SNAPPED.
Dec 15, 4:10 PM CST	TSTM WND DMG	Pawnee City, NE	LOTS OF STRUCTURE DAMAGE, ROOF DAMAGE, CARPORTS DAMAGED.
Dec 15, 4:10 PM CST	TORNADO	3 E Murray, NE	CORRECTS PREVIOUS TORNADO REPORT FROM 3 E MURRAY. TORNADO TRACK COMBINED WITH PREVIOUSLY SEPARATE TORNADO TRACK THAT BEGAN 4 ENE MURRAY, OR 2 NE BEAVER LAKE. THREE WITNESSES OBSERVED TORNADO FORM SOUTH SIDE OF BEAVER LAKE. ROOF TAKEN OFF RESIDENCE. SEVERAL HAR
Dec 15, 4:10 PM CST	TORNADO	4 Ene Murray, NE	TORNADO DEVELOPED IN OPEN FIELD AND TRAVELED NORTH-NORTHEAST. SUBSTANTIAL DAMAGE WAS DONE TO A HORSE FARM. EXTENSION OF HOUSE DESTROYED. HORSE TRAILER ROLLED. SEVERAL LARGE TREES SNAPPED AN UPROOTED. UNABLE TO SURVEY NORTHERN END OF TRACK DUE TO TERRAIN AND NO
Dec 15, 4:12 PM CST	TSTM WND DMG	5 Nne Omaha, NE	SEVERAL LARGE TREE LIMBS DOWN.
Dec 15, 4:13 PM CST	TSTM WND DMG	3 Nw Bellevue, NE	DELAYED REPORT, TIME ESTIMATED FROM RADAR. LIMBS DOWN NEAR 30TH AND HARRISON.
Dec 15, 4:13 PM CST	TSTM WND DMG	Bellevue, NE	NUMEROUS LARGE TREES DOWN AND HOMES DAMAGED.
Dec 15, 4:14 PM CST	TSTM WND GST 62	2 S Murray, NE	MESONET STATION UP945 2.2 S MURRAY (UPR).
Dec 15, 4:14 PM CST	NON-TSTM WND GST 81	Offutt Afb, NE	AWOS STATION KOFF OFFUTT AFB.
Dec 15, 4:14 PM CST	TORNADO	5 Wnw Tabor, IA	CORRECTS PREVIOUS TORNADO REPORT FROM 5 WNW TABOR. THE TORNADO BEGAN IN THE HILLS AND ROUGH TERRAIN NEAR PEASE RD AND QUIGG AVE, AND TRAVELLED QUICKLY NORTHEAST ALONG THE 10 MILE TRACK, LASTING APPROXIMATELY 9 MINUTES. THE FIRST FEW MILES OF THE TORNADO TRACK
Dec 15, 4:15 PM CST	TSTM WND DMG	5 Nne Boys Town, NE	BRANCHES DOWN MORE THAN 6 INCHES IN DIAMETER.
Dec 15, 4:15 PM CST	TSTM WND DMG	Auburn, NE	DELAYED REPORT, TIME ESTIMATED FROM RADAR. REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN.
Dec 15, 4:15 PM CST	NON-TSTM WND GST 48	1 Ne Chalco, NE	AWOS STATION KMLE MILLARD AIRPORT.
Dec 15, 4:16 PM CST	TSTM WND DMG	Bellevue, NE	LARGE LIMB CRUSHED CAR. FENCE DOWN.
Dec 15, 4:16 PM CST	NON-TSTM WND GST 50	Springfield, NE	MESONET STATION EW9007 SPRINGFIELD.
Dec 15, 4:16 PM CST	NON-TSTM WND GST 52	3 Sse Plattsmouth, NE	MESONET STATION FW9521 PLATTSMOUTH.
Dec 15, 4:16 PM CST	TORNADO	4 Ssw Council Bluffs, IA	SHORT TRACK TORNADO STARTED NEAR THE MISSOURI RIVER AND TRAVEL 0.90 MILES TO THE NORTH NORTHEAST. LARGE BRANCHES WERE BLOWN DOWN BY THE TORNADO.
Dec 15, 4:16 PM CST	TORNADO	4 Ssw Council Bluffs, IA	UPDATE TO PREVIOUS REPORT. SHORT TRACK TORNADO STARTED NEAR THE MISSOURI RIVER AND TRAVEL 0.90 MILES TO THE NORTH NORTHEAST. LARGE BRANCHES WERE BLOWN DOWN BY THE TORNADO IN AN OTHERWISE UNPOPULATED PORTION OF THE MISSOURI RIVER BOTTOM. THE PRESENCE OF A TORNA
Dec 15, 4:20 PM CST	TSTM WND GST 62	1 Sw Council Bluffs, IA	MESONET STATION RCBI4 COUNCIL BLUFFS (I-80).
Dec 15, 4:21 PM CST	TSTM WND DMG	1 Ene Council Bluffs, IA	NINE LOADED COAL CARS ROLLED OFF TRACKS.
Dec 15, 4:22 PM CST	TSTM WND DMG	2 N Malvern, IA	POWER LINES ACROSS HIGHWAY 34.
Dec 15, 4:22 PM CST	TSTM WND GST 58	2 W Missouri Valley, IA	MESONET STATION UP118 2.2 W MISSOURI VALLEY (UPR).
Dec 15, 4:22 PM CST	TSTM WND GST 81	Offutt Afb, NE
Dec 15, 4:22 PM CST	TSTM WND GST 83	8 Wsw Sidney, IA	MESONET STATION NEAR SIDNEY AT I29/HWY 2.
Dec 15, 4:22 PM CST	TSTM WND GST 83	Missouri Valley, IA
Dec 15, 4:22 PM CST	NON-TSTM WND GST 74	7 Ene Omaha, NE	ASOS STATION KOMA OMAHA EPPLEY AIRFIELD.
Dec 15, 4:24 PM CST	TSTM WND DMG	5 W Mcclelland, IA	FIRE CHIEF REPORTED POWER LINES AND POLES DOWN FOR ABOUT A 1/4 MILE FROM HOMESTEAD AVE TO L-34 ALONG RAILROAD HIGHWAY.
Dec 15, 4:24 PM CST	TORNADO	4 Wsw Mcclelland, IA	A NARROW BUT STRONG TORNADO TRACKED ALONG ROAD L34 THROUGH SHERWOOD COUNTRY ESTATES BEFORE ENDING NEAR JUNIPER ROAD. THE MAXIMUM DAMAGE WAS SUSTAINED TO A HOME IN SHERWOOD COUNTRY ESTATES WHERE THE NARROW TORNADO REMOVED THE MAJORITY OF A HOMES ROOF AND DAMAGE
Dec 15, 4:25 PM CST	TSTM WND DMG	3 Wnw Mcclelland, IA	MAJOR HOME DAMAGE IN WESTON.
Dec 15, 4:26 PM CST	TSTM WND GST 56	4 Nw Stella, NE	MESONET STATION UP941 4.1 NW STELLA (UPR).
Dec 15, 4:26 PM CST	TSTM WND GST 74	7 Ene Omaha, NE	RECORDED AT EPPLEY AIRFIELD.
Dec 15, 4:27 PM CST	TSTM WND DMG	1 Nw Treynor, IA	POWERLINES DOWN.
Dec 15, 4:27 PM CST	TSTM WND DMG	5 Ese Bennington, NE	LARGE DIAMETER TREE BROKEN IN HALF.
Dec 15, 4:29 PM CST	TSTM WND DMG	4 E Treynor, IA	LARGE TREE ON HOUSE.
Dec 15, 4:29 PM CST	TSTM WND DMG	4 W Underwood, IA	ROOF BLOWN OFF A HOUSE ON L-34 WEST OF UNDERWOOD.
Dec 15, 4:30 PM CST	TSTM WND DMG	Auburn, NE	LARGE DIAMETER TREES DOWN.
Dec 15, 4:30 PM CST	TSTM WND GST 92	2 Wsw Hastings, IA	DELAYED REPORT. 92 MPH FROM ESE. 2 OTHER WEATHER STATIONS IN THE SAME AREA RECORDED 66 MPH FROM THE SOUTH AND 81 MPH FROM THE SSW.
Dec 15, 4:31 PM CST	TORNADO	2 E Underwood, IA	A NARROW EF-2 TORNADO BEGAN PRODUCING DAMAGE NEAR MAHOGANY ROAD AND 290TH ST AND TRACKED NORTH NORTHEAST INTO THE SOUTHEAST EDGE OF NEOLA AND THEN CAUSED INTERMITTENT DAMAGE NEAR RAILROAD HIGHWAY NORTH OF NEOLA. THE MOST SIGNIFICANT DAMAGE WAS TO A HOME ALONG
Dec 15, 4:32 PM CST	TORNADO	2 Sw Neola, IA	FROM VIDEO AND TDS. TORNADO ON THE GROUND FOR AT LEAST 2 MINUTES. DAMAGE REPORTED IN NEOLA.
Dec 15, 4:33 PM CST	TSTM WND DMG	Murray, NE	WINDOWS BLOWN OUT AND ROOF DAMAGE.
Dec 15, 4:34 PM CST	TSTM WND DMG	4 Ne Logan, IA	DELAYED REPORT, TIME ESTIMATED FROM RADAR. REPORT FROM MPING: TREES UPROOTED OR SNAPPED; ROOF BLOWN OFF.
Dec 15, 4:35 PM CST	NON-TSTM WND GST 79	5 Ene Council Bluffs, IA	AWOS STATION KCBF COUNCIL BLUFFS AIRPORT.
Dec 15, 4:36 PM CST	TSTM WND GST 79	5 Ene Council Bluffs, IA
Dec 15, 4:38 PM CST	TSTM WND DMG	1 Ne Underwood, IA	LARGE GARAGE DOORS ON CITY BUILDING BLOWN IN.
Dec 15, 4:38 PM CST	TSTM WND GST 80	2 Se Underwood, IA
Dec 15, 4:41 PM CST	TSTM WND DMG	1 Ssw Omaha, NE	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 SSW OMAHA. RESIDENTIAL BUILDING COLLAPSE DUE TO HEAVY TREE FALLING ON A HOUSE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 37 storm reports to this severe thunderstorm warning; the first came 21 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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, 9.6 hours before the alert went out and 104 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

447 
WUUS53 KOAX 152135
SVROAX
IAC071-085-129-155-NEC025-055-097-127-131-133-147-153-177-152245-
/O.NEW.KOAX.SV.W.0200.211215T2135Z-211215T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Omaha/Valley Nebraska
335 PM CST Wed Dec 15 2021

The National Weather Service in Omaha has issued a

* Severe Thunderstorm Warning for...
  Mills County in southwestern Iowa...
  Fremont County in southwestern Iowa...
  Western Pottawattamie County in southwestern Iowa...
  Southern Harrison County in southwestern Iowa...
  Eastern Johnson County in southeastern Nebraska...
  Nemaha County in southeastern Nebraska...
  Douglas County in east central Nebraska...
  Eastern Pawnee County in southeastern Nebraska...
  Sarpy County in east central Nebraska...
  Southeastern Washington County in east central Nebraska...
  Otoe County in southeastern Nebraska...
  Richardson County in southeastern Nebraska...
  Cass County in southeastern Nebraska...

* Until 445 PM CST.

* At 333 PM CST, severe thunderstorms were located along a line
  extending from 5 miles northeast of Prague to 5 miles north of
  Oketo, moving east at 65 mph.

  THESE ARE DESTRUCTIVE STORMS.

  HAZARD...80 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  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...
  Pawnee City, Kennard, Table Rock, Blair, Humboldt, Fort Calhoun, 
  Missouri Valley, Modale, Stella, Shubert, Logan and Persia.

This includes the following highways...
 Interstate 29 between mile markers 1 and 84.
 Interstate 80 in Iowa between mile markers 1 and 27.
 Interstate 80 in Nebraska between mile markers 432 and 454.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for southwestern
Iowa...and southeastern and east central Nebraska.

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across. 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 southwestern
Iowa...and southeastern and east central Nebraska.

&&

LAT...LON 4157 9628 4178 9557 4058 9550 4057 9578
      4052 9575 4052 9570 4056 9568 4054 9565
      4051 9569 4047 9569 4046 9564 4042 9566
      4034 9562 4031 9566 4024 9548 4019 9548
      4012 9541 4005 9542 4000 9533 4000 9623
TIME...MOT...LOC 2133Z 249DEG 55KT 4135 9672 4004 9659 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...80 MPH

$$

DeWald

5 follow-up statements

768 
WWUS53 KOAX 152146
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
346 PM CST Wed Dec 15 2021

IAC071-085-129-155-NEC025-055-097-127-131-133-147-153-177-152245-
/O.CON.KOAX.SV.W.0200.000000T0000Z-211215T2245Z/
Mills IA-Fremont IA-Pottawattamie IA-Harrison IA-Johnson NE-
Nemaha NE-Douglas NE-Pawnee NE-Sarpy NE-Washington NE-Otoe NE-
Richardson NE-Cass NE-
346 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CST
FOR MILLS...FREMONT...WESTERN POTTAWATTAMIE...SOUTHERN HARRISON...
EASTERN JOHNSON...NEMAHA...DOUGLAS...EASTERN PAWNEE...SARPY...
SOUTHEASTERN WASHINGTON...OTOE...RICHARDSON AND CASS COUNTIES...

At 345 PM CST, severe thunderstorms were located along a line
extending from Inglewood to 7 miles north of Summerfield, moving east
at 65 mph.

THESE ARE VERY DESTRUCTIVE STORMS.

HAZARD...90 mph wind gusts and penny size hail.

SOURCE...Trained weather spotters.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be heavily damaged or destroyed. Homes and businesses 
         will have substantial roof and window damage. Expect 
         extensive tree damage and power outages.

Locations impacted include...
Omaha, Falls City, Council Bluffs, Bellevue, Papillion, La Vista,
Blair, Nebraska City, Plattsmouth, Ralston, Glenwood, Gretna, Auburn,
Missouri Valley, Syracuse, Tecumseh, Logan, Springfield, Hamburg and
Malvern.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for southwestern
Iowa...and southeastern and east central Nebraska.

This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.

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 4157 9628 4178 9557 4058 9550 4057 9578
      4052 9575 4052 9570 4056 9568 4054 9565
      4051 9569 4047 9569 4046 9564 4042 9566
      4034 9562 4031 9566 4024 9548 4019 9548
      4012 9541 4005 9542 4000 9533 4000 9623
TIME...MOT...LOC 2145Z 249DEG 55KT 4141 9651 4010 9638 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...90 MPH

$$

DeWald

434 
WWUS53 KOAX 152212
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
412 PM CST Wed Dec 15 2021

IAC071-085-129-155-NEC025-055-097-127-131-133-147-153-177-152245-
/O.CON.KOAX.SV.W.0200.000000T0000Z-211215T2245Z/
Mills IA-Fremont IA-Pottawattamie IA-Harrison IA-Johnson NE-
Nemaha NE-Douglas NE-Pawnee NE-Sarpy NE-Washington NE-Otoe NE-
Richardson NE-Cass NE-
412 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CST
FOR MILLS...FREMONT...WESTERN POTTAWATTAMIE...SOUTHERN HARRISON...
EASTERN JOHNSON...NEMAHA...EASTERN DOUGLAS...EASTERN PAWNEE...
NORTHEASTERN SARPY...SOUTHEASTERN WASHINGTON...EASTERN OTOE...
RICHARDSON AND EASTERN CASS COUNTIES...

At 412 PM CST, severe thunderstorms were located along a line
extending from 4 miles south of Modale to near Murray to near
Westmoreland, moving northeast at 80 mph.

THESE ARE VERY DESTRUCTIVE STORMS.

HAZARD...90 mph wind gusts and penny size hail.

SOURCE...Trained weather spotters.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be heavily damaged or destroyed. Homes and businesses 
         will have substantial roof and window damage. Expect 
         extensive tree damage and power outages.

Locations impacted include...
Omaha, Falls City, Council Bluffs, Bellevue, Papillion, La Vista,
Blair, Nebraska City, Plattsmouth, Ralston, Glenwood, Auburn,
Missouri Valley, Logan, Hamburg, Malvern, Sidney, Treynor, Underwood
and Fort Calhoun.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for southwestern
Iowa...and southeastern and east central Nebraska.

This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.

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 4092 9607 4157 9628 4178 9557 4058 9550
      4057 9578 4052 9575 4052 9570 4056 9568
      4054 9565 4051 9569 4047 9569 4046 9564
      4042 9566 4034 9562 4031 9566 4024 9548
      4012 9541 4004 9542 4000 9533 4000 9623
TIME...MOT...LOC 2212Z 230DEG 70KT 4155 9603 4095 9590 3943 9644 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...90 MPH

$$

DeWald

222 
WWUS53 KOAX 152226
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
426 PM CST Wed Dec 15 2021

NEC097-152235-
/O.CAN.KOAX.SV.W.0200.000000T0000Z-211215T2245Z/
Johnson NE-
426 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN JOHNSON COUNTY 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
Iowa...and southeastern and east central Nebraska.

LAT...LON 4087 9596 4160 9612 4178 9557 4058 9550
      4057 9578 4052 9575 4052 9570 4056 9568
      4054 9565 4051 9569 4047 9569 4046 9564
      4042 9566 4034 9562 4031 9566 4024 9548
      4012 9541 4004 9542 4000 9533 4000 9608
TIME...MOT...LOC 2225Z 270DEG 55KT 4162 9580 4102 9567 3950 9622 

$$

IAC071-085-129-155-NEC025-055-127-131-133-147-153-177-152245-
/O.CON.KOAX.SV.W.0200.000000T0000Z-211215T2245Z/
Fremont IA-Mills IA-Pottawattamie IA-Harrison IA-Sarpy NE-
Washington NE-Nemaha NE-Otoe NE-Douglas NE-Richardson NE-Pawnee NE-
Cass NE-
426 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CST
FOR FREMONT...MILLS...WESTERN POTTAWATTAMIE...SOUTHERN HARRISON...
NORTHEASTERN SARPY...SOUTHEASTERN WASHINGTON...NEMAHA...EASTERN
OTOE...EASTERN DOUGLAS...RICHARDSON...EASTERN PAWNEE AND EASTERN CASS
COUNTIES...

At 425 PM CST, severe thunderstorms were located along a line
extending from Logan to 4 miles southeast of Glenwood to near Onaga,
moving east at 65 mph.

THESE ARE VERY DESTRUCTIVE STORMS.

HAZARD...90 mph wind gusts and penny size hail.

SOURCE...Trained weather spotters.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be heavily damaged or destroyed. Homes and businesses 
         will have substantial roof and window damage. Expect 
         extensive tree damage and power outages.

Locations impacted include...
Omaha, Falls City, Council Bluffs, Bellevue, Papillion, La Vista,
Blair, Nebraska City, Plattsmouth, Ralston, Glenwood, Auburn,
Missouri Valley, Logan, Hamburg, Malvern, Sidney, Treynor, Underwood
and Fort Calhoun.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for southwestern
Iowa...and southeastern and east central Nebraska.

This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.

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 4087 9596 4160 9612 4178 9557 4058 9550
      4057 9578 4052 9575 4052 9570 4056 9568
      4054 9565 4051 9569 4047 9569 4046 9564
      4042 9566 4034 9562 4031 9566 4024 9548
      4012 9541 4004 9542 4000 9533 4000 9608
TIME...MOT...LOC 2225Z 270DEG 55KT 4162 9580 4102 9567 3950 9622 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...90 MPH

$$

DeWald

085 
WWUS53 KOAX 152231
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
431 PM CST Wed Dec 15 2021

NEC025-055-133-153-177-152241-
/O.CAN.KOAX.SV.W.0200.000000T0000Z-211215T2245Z/
Sarpy NE-Washington NE-Douglas NE-Pawnee NE-Cass NE-
431 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SARPY...
SOUTHEASTERN WASHINGTON...EASTERN DOUGLAS...EASTERN PAWNEE AND
EASTERN CASS 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
Iowa...and southeastern Nebraska.

LAT...LON 4100 9578 4166 9594 4178 9557 4058 9550
      4057 9578 4052 9575 4052 9570 4056 9568
      4054 9565 4051 9569 4047 9569 4046 9564
      4042 9566 4034 9562 4031 9566 4024 9548
      4012 9541 4004 9542 4000 9533 4001 9598
TIME...MOT...LOC 2231Z 249DEG 62KT 4166 9561 4106 9548 4003 9582 

$$

IAC071-085-129-155-NEC127-131-147-152245-
/O.CON.KOAX.SV.W.0200.000000T0000Z-211215T2245Z/
Fremont IA-Mills IA-Pottawattamie IA-Harrison IA-Nemaha NE-Otoe NE-
Richardson NE-
431 PM CST Wed Dec 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CST
FOR FREMONT...CENTRAL MILLS...WESTERN POTTAWATTAMIE...SOUTHEASTERN
HARRISON...CENTRAL NEMAHA...SOUTHEASTERN OTOE AND RICHARDSON
COUNTIES...

At 431 PM CST, severe thunderstorms were located along a line
extending from 6 miles north of Persia to 4 miles northwest of
Emerson to 8 miles north of Sabetha, moving east at 70 mph.

THESE ARE VERY DESTRUCTIVE STORMS.

HAZARD...90 mph wind gusts and penny size hail.

SOURCE...Trained weather spotters.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be heavily damaged or destroyed. Homes and businesses 
         will have substantial roof and window damage. Expect 
         extensive tree damage and power outages.

Locations impacted include...
Falls City, eastern Council Bluffs, Nebraska City, Glenwood, Auburn,
Missouri Valley, Logan, Hamburg, Malvern, Sidney, Treynor, Underwood,
Humboldt, Peru, Persia, Riverton, Verdon, Stella, Shubert and
Woodbine.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CST for southwestern
Iowa...and southeastern Nebraska.

This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. These storms have the potential to cause
serious injury and significant property damage.

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 4100 9578 4166 9594 4178 9557 4058 9550
      4057 9578 4052 9575 4052 9570 4056 9568
      4054 9565 4051 9569 4047 9569 4046 9564
      4042 9566 4034 9562 4031 9566 4024 9548
      4012 9541 4004 9542 4000 9533 4001 9598
TIME...MOT...LOC 2231Z 249DEG 62KT 4166 9561 4106 9548 4003 9582 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...90 MPH

$$

DeWald

194 
WWUS53 KOAX 152245
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
445 PM CST Wed Dec 15 2021

IAC071-085-129-155-NEC127-131-147-152254-
/O.EXP.KOAX.SV.W.0200.000000T0000Z-211215T2245Z/
Fremont IA-Mills IA-Pottawattamie IA-Harrison IA-Nemaha NE-Otoe NE-
Richardson NE-
445 PM CST Wed Dec 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR FREMONT...CENTRAL MILLS...
WESTERN POTTAWATTAMIE...SOUTHEASTERN HARRISON...CENTRAL NEMAHA...
SOUTHEASTERN OTOE AND RICHARDSON COUNTIES WILL EXPIRE AT 445 PM
CST...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 800 PM CST for southwestern
Iowa...and southeastern Nebraska.

LAT...LON 4100 9578 4166 9594 4178 9557 4058 9550
      4057 9578 4052 9575 4052 9570 4056 9568
      4054 9565 4051 9569 4047 9569 4046 9564
      4042 9566 4034 9562 4031 9566 4024 9548
      4012 9541 4004 9542 4000 9533 4001 9598
TIME...MOT...LOC 2244Z 249DEG 55KT 4173 9537 4113 9524 4010 9559 

$$

DeWald

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Dec 15, 2:00 PM CST, 1 hour 35 minutes earlier.

Area forecast discussion, Dec 15, 2:00 PM CST, 1 hour 35 minutes before

Area Forecast Discussion
National Weather Service Omaha/Valley NE
200 PM CST Wed Dec 15 2021

...Updated Mesoscale Forecast Discussion...

.MESOSCALE DISCUSSION...
Issued at 116 PM CST Wed Dec 15 2021

A Tornado Watch has been issued for much of eastern Nebraska and
western Iowa. Temperatures have soared into the 70s and dew point
temperatures are in the upper 50s. Storms are currently ongoing
in south central Nebraska where tornado and thunderstorm warnings
have been issued. The storms have a forward motion to the
northeast at approximately 80 mph. Widespread damaging winds are
expected with peak wind gusts up to 90 mph possible. Impressive
shear and storm relative helicity values will aid smaller scale
circulations within the squall line leading to a risk for
tornadoes.

After the squall line has passed through, there may be a lull in
wind gusts, but it will only be temporary. Sustained wind speeds
of 30 to 40 mph are expected through the afternoon and into the
evening. Peak wind gusts of up to 70 mph are forecast between 4 PM
and 8 PM. This will be several hours of severe criteria winds
which could lead to damage to trees, power lines, and some
structures. Power outages are likely. Winds are expected to begin
to decrease after 8 PM, but 40 mph gusts are forecast up until
midnight, after which the winds gusts should drop to lower than 20
mph.

Along the NE/SD border, light snow with accumulations under an
inch are possible. Blowing snow leading to reduced visibilities
due to strong winds and snowfall could result in hazardous
travel.

&&

.DISCUSSION...
Issued at 401 AM CST Wed Dec 15 2021

.Synopsis:

A highly impactful weather system is set to affect the entire
forecast area today, with prolonged damaging winds gusts, areas of
extreme fire danger, severe weather, and brief whiteout conditions
all being possible hazards.

Today:

Water vapor imagery this morning places a very progressive,
neutrally-tilted upper trough over the Intermountain West, with
broad southwesterly flow at the all levels over the central CONUS.
This trough is expected progress to the lee of the Rockies by late
morning, beginning a rapid deepening process throughout the day. A
surface center of low pressure is expected to develop and travel
from the Nebraska Panhandle across northern Nebraska/souther
South Dakota, dragging a very strong dryline ahead of a cold front
to the west of it. As the system deepens, the mid/upper flow is
expected to become negatively-tilted, inducing strong moisture
flux into the area and general warm air advection as extremely
strong wind fields in the lower levels develop as the system
deepens. Deep mixing and extremely impressive low-level winds are
going to allow for efficient momentum transfer to the surface.
Wind gusts values are expected to land in the 60 to 75 mph range
this afternoon, with the strongest winds being associated with a
southwest to westerly sting jet that wraps around the dry conveyor
belt. Power outages, damage to trees/power poles/potentially
structures, and hazardous travel conditions for any vehicles are
expected. To put this system in context, the large majority of
fields available (such as surface temperatures, sustained winds,
and gust) are at the very top of the ECMWF model reanalysis for
this time of year; going back 20 years.

The next piece of the hazard puzzle comes in the form of extreme
fire danger, associated with the strong winds and low relative
humidity values behind the dryline. As the dryline passes through
the area, portions of southeast Nebraska are going to see dewpoints
fall by as much as 44 degrees over the course of an hour or two.
Arcing power lines and sparks from vehicles or machinery could serve
as a source of ignition while winds gust to over 70 mph in spots
collocated with minimum relative humidity values as low as 12%. The
main are of concern for extreme and uncontrollable fire behavior is
generally south of a line from Columbus to Harlan, and also has Red
Flag Warning in place beginning at noon.

With the strong moisture flux ahead of the dry line, dewpoints ahead
of the surface low and dryline top out in the low-to-upper 50's
assisting MLCAPE values reach values as high as 900 J/kg in far
northeastern Nebraska, with bulk shear values well upwards of 60
kts. Current CAM runs indicate that the main convective mode will
take the form of a line of showers and storms along the main
boundary, reinforcing the primary wind threat. Sufficient
curvature exists in the low-level hodographs to support a tornado
threat embedded in the main line of storms as well, with the main
area of concern being in northeastern Nebraska into north-central
Iowa. A lower-probability scenario is the possibility of a more
discrete, quick-moving tornadic supercell or two where the main
pressure falls are expected with the advancement of the surface
low. The main failure mode of the latter scenario will be the
difficulty that a consistent updraft will be sustained despite the
very strong shear and entrainment. The main timeframe for severe
weather in the CWA will be from 2 to 7 PM.

A complicating factor to the forecast associated with the wraparound
moisture will come in the form of snow along the backside of the
surface low, where wind speeds will still be strong as much cooler
temperatures push south; introducing the possibility of brief
whiteout conditions. The chances for this happening currently look
to stay north of a line from Albion to Pender. These rapid-onset
whiteout conditions are often accompanied by a flash freeze of road
temperatures, creating extremely hazardous travel conditions if
they manifest. The main timeframe for this hazard looks to be from
5 to 9 PM.

The overall weather even is expected to wind down late this evening
into the overnight hours, with wind gusts returning to sub-30 mph
speeds by sunrise.

.Thursday into Early Next Week:

Going forward into the forecast period quiet weather is expected as
the mid/upper pattern modulates between zonal to southwesterly flow.
Little chance for meaningful precipitation are forecast, as the
main weather makers miss our neck of the woods to the
north/south/east. Highs will generally stay above-average, and in
the low-to mid 40's for much of the area.

&&

.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
Issued at 1134 AM CST Wed Dec 15 2021

Extremely strong wind gusts will occur this TAF period with peak
wind gusts of 50 to 60 kts. The strongest winds are expected to
occur between 22Z and 02Z. There are signals from the HRRR/RAP/FV3
that wind gusts could be stronger than forecast. A line of
thunderstorms are also forecast to move through the area this
afternoon. That line of storms will be moving quickly with speeds
up to 80 mph.

The strong winds will not end with the storms. A wind shift is
expected from the south to the southwest, and eventually to the
northwest. Severe criteria winds are expected to persist for
several hours. Ceilings may briefly drop down MVFR criteria with
the passage of the thunderstorms. Skies will quickly clear up
afterward.

There is likely not to be a typical updated afternoon general AFD.
Next update will be on the overnight. There will be an updated
aviation discussion for 00Z TAFs.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...High Wind Warning until 9 PM CST this evening for NEZ011-012-
     015>018-030>034-042>045-050>053-065>068-078-088>093.

     Red Flag Warning until 9 PM CST this evening for NEZ050>053-
     065>068-078-088>093.

IA...High Wind Warning until 9 PM CST this evening for IAZ043-055-056-
     069-079-080-090-091.

     Red Flag Warning until 9 PM CST this evening for IAZ069-079-080-
     090-091.

&&

MESOSCALE...Fajman
DISCUSSION...Petersen
AVIATION...Fajman

Hazardous weather outlook, Dec 15, 1:27 PM CST, 2 hours 8 minutes before

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
127 PM CST Wed Dec 15 2021

IAZ069-079-080-090-091-NEZ050>053-065>068-078-088>093-161930-
Pottawattamie-Mills-Montgomery-Fremont-Page-Butler-Saunders-
Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline-Jefferson-Gage-
Johnson-Nemaha-Pawnee-Richardson-
127 PM CST Wed Dec 15 2021

This Hazardous Weather Outlook is for portions of southwest Iowa,
east central Nebraska, and southeast Nebraska.

.DAY ONE...This Afternoon and Tonight

There are several weather threats today.

A Tornado Watch is in effect from 1 PM until 8 PM. Strong to
severe storms are likely this afternoon, including wind gusts in
excess of 70 to 80 mph with a few tornadoes possible. Storms will
develop quickly and may move up to 85 mph.

A High Wind Warning is in effect from from 12 PM Wednesday
morning through 9 PM Wednesday evening. The strongest winds are
expected to arrive by noon and beyond.

A Red Flag Warning has been issued for the afternoon and early
evening.

An intense storm system will move through the region Wednesday.
Widespread wind gusts of 50 to 70 mph are likely, with potential
for peak gusts of 75 mph. A few severe storms and dangerous fire
weather conditions are also possible Wednesday afternoon. Areas of
blowing dust may also occur with reduced visibility.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Strong winds and dangerous fire conditions will linger into the
evening, then improve shortly after midnight.

.SPOTTER INFORMATION STATEMENT...

IAZ043-055-056-NEZ011-012-015>018-030>034-042>045-161930-
Monona-Harrison-Shelby-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-
Boone-Madison-Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-
127 PM CST Wed Dec 15 2021

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

.DAY ONE...This Afternoon and Tonight

There are several weather threats today.

A Tornado Watch is in effect from 1 PM until 8 PM. Strong to
severe storms are likely this afternoon, including wind gusts in
excess of 70 to 80 mph with a few tornadoes possible. Storms will
develop quickly and may move up to 85 mph.

A High Wind Warning is in effect from from 12 PM Wednesday
morning through 9 PM Wednesday evening. The strongest winds are
expected to arrive by noon and beyond.

An intense storm system will move through the region Wednesday.
Widespread wind gusts of 50 to 70 mph are likely, with potential
for peak gusts of 75 mph. A few severe storms are also possible on
Wednesday afternoon. Brief whiteout conditions are possible with
snow northwest of a line from Albion to Pender. Areas of blowing
dust may also occur with reduced visibility.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Strong winds will linger into the evening, then improve shortly
after midnight.

.SPOTTER INFORMATION STATEMENT...

In the hours before

Local storm report, Dec 15, 3:09 PM CST, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
309 PM CST WED DEC 15 2021

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

0305 PM     HAIL             COLUMBUS                41.44N 97.35W
12/15/2021  E1.25 INCH       PLATTE             NE   PUBLIC

&&

SF

Local storm report, Dec 15, 3:14 PM CST, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
314 PM CST WED DEC 15 2021

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

0313 PM     TORNADO          2 SE HUMPHREY           41.67N 97.46W
12/15/2021                   PLATTE             NE   911 CALL CENTER

            TORNADO ON THE GROUND.

&&

Local storm report, Dec 15, 3:16 PM CST, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
316 PM CST WED DEC 15 2021

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

0314 PM     TSTM WND GST     1 NNE COLUMBUS          41.45N 97.35W
12/15/2021  M68 MPH          PLATTE             NE   ASOS

&&

TSN

Local storm report, Dec 15, 3:23 PM CST, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
323 PM CST WED DEC 15 2021

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

0321 PM     TSTM WND GST     3 ESE LINCOLN           40.80N 96.64W
12/15/2021  M67 MPH          LANCASTER          NE   PUBLIC

            FROM A PERSONAL WEATHER STATION.

&&

TSN

Local storm report, Dec 15, 3:29 PM CST, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
329 PM CST WED DEC 15 2021

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

0327 PM     TSTM WND GST     HOWELLS                 41.73N 97.00W
12/15/2021  M76 MPH          COLFAX             NE   PUBLIC

            WIND GUST TO 76 MPH ALONG WITH PENNY SIZED
            HAIL.

&&

PEARSON

Local storm report, Dec 15, 3:35 PM CST, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
335 PM CST WED DEC 15 2021

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

0330 PM     TSTM WND GST     4 NW LINCOLN            40.85N 96.76W
12/15/2021  M93 MPH          LANCASTER          NE   ASOS

&&

TSN

The 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 Destructive damage threat	OAX	Antelope, Boone, Butler, Colfax, Madison, Pierce and 2 more	56 min
Dec 15, 2:26 PM CST	Severe Thunderstorm Warning Considerable damage threat	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 Destructive damage threat	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 Destructive damage threat	OAX	Burt, Butler, Colfax, Cuming, Dodge, Saunders and 4 more	51 min
Dec 15, 3:13 PM CST	Severe Thunderstorm Warning Considerable damage threat	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, 3:41 PM CST	Severe Thunderstorm Warning Destructive damage threat	OAX	Burt, Cuming, Thurston, Washington	64 min
Dec 15, 3:45 PM CST	Tornado Warning	OAX	Douglas, Saunders	30 min
Dec 15, 3:45 PM CST	Tornado Warning Tornado observed	OAX	Cuming, Thurston	45 min
Dec 15, 3:54 PM CST	Tornado Warning Tornado observed	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 Destructive damage threat	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 Tornado observed	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, 2021 Severe Thunderstorm Warnings in Iowa, 2021 Every 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.