Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 67, NWS Omaha, NE

June 24, 20218 counties in Nebraska; 4 counties in Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Jun 24, 2021, 2:15 AM CDT for 8 counties in Nebraska; 4 counties in Iowa. It was in force for 60 min. 15 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: Jun 24, 2021, 2:15 AM CDT (07:15 UTC)
Expired: Jun 24, 2021, 3:15 AM CDT
In force: 60 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Harrison County, IA, Mills County, IA, Monona County, IA, Pottawattamie County, IA, Burt County, NE, Cass County, NE, Dodge County, NE, Douglas County, NE, Sarpy County, NE, Saunders County, NE, Thurston County, NE, Washington County, NE

The radar

The Omaha radar (KOAX), 55 km from the middle of the area, began a volume at 07:18 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
Jun 24, 2:15 AM CDT	TSTM WND GST 60	2 Ene Winslow, NE	POWER IS OUT.
Jun 24, 2:25 AM CDT	TSTM WND GST 59	1 Wnw Fremont, NE	KFET GUST TO 51 KT.
Jun 24, 2:30 AM CDT	TSTM WND DMG	Mead, NE	POWERLINES DOWN.
Jun 24, 2:50 AM CDT	TSTM WND GST 65	4 S Inglewood, NE	MEASURED ON PERSONAL WEATHER STATION.
Jun 24, 2:59 AM CDT	TSTM WND DMG	1 Nne Papillion, NE	TREE SNAPPED OFF IN BACK YARD. REPORT TIME BASED ON RADAR.
Jun 24, 3:00 AM CDT	TSTM WND DMG	1 Ene La Vista, NE	LARGE TREE BRANCH DOWN. REPORT AND ACCOMPANYING PICTURE RECEIVED VIA SOCIAL MEDIA. REPORT TIME BASED ON RADAR.
Jun 24, 3:00 AM CDT	TSTM WND GST 60	2 Nne Leshara, NE	MESONET STATION UP944 2.3 NE LESHARA (UPR).
Jun 24, 3:00 AM CDT	TSTM WND GST 60	2 Nne Leshara, NE
Jun 24, 3:10 AM CDT	TSTM WND DMG	2 Nnw Bellevue, NE	PHOTO SUBMITTED VIA SOCIAL MEDIA OF A LARGE TREE DOWN ON A RESIDENTIAL HOME CAUSING ROOF DAMAGE.
Jun 24, 3:12 AM CDT	TSTM WND DMG	3 E Omaha, NE	SIGNIFICANT TREE DAMAGE ABOUT 34TH AND HARNEY AREA. TREE IN THE ROAD. REPORT TIME BASED ON RADAR.
Jun 24, 3:12 AM CDT	TSTM WND GST 66	2 Sw Papillion, NE	MEASURED ON PERSONAL WEATHER STATION.
Jun 24, 3:14 AM CDT	TSTM WND GST 58	Tekamah, NE
Jun 24, 3:20 AM CDT	TSTM WND DMG	3 Ese Omaha, NE	LARGE DIAMETER TREE BROKEN AT THE TRUNK AND LAYING ACROSS ROAD ON HARNEY ST.
Jun 24, 3:22 AM CDT	TSTM WND GST 66	7 Ene Omaha, NE	ASOS STATION KOMA OMAHA EPPLEY AIRFIELD.
Jun 24, 3:25 AM CDT	TSTM WND DMG	4 Ne South Bend, NE	LARGE TREE DOWNED AND SWING SET OVERTURNED. TIME ESTIMATED FROM RADAR.

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
Jun 23, 10:37 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 7.3 hours before the alert went out and 56 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: 2039 J/kg
Mixed-layer CIN: -306 J/kg
Mixed-layer LCL: 1664 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

540 
WUUS53 KOAX 240715
SVROAX
IAC085-129-133-155-NEC021-025-053-055-153-155-173-177-240815-
/O.NEW.KOAX.SV.W.0067.210624T0715Z-210624T0815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Omaha/Valley Nebraska
215 AM CDT Thu Jun 24 2021

The National Weather Service in Omaha has issued a

* Severe Thunderstorm Warning for...
  Monona County in west central Iowa...
  Northern Mills County in southwestern Iowa...
  Pottawattamie County in southwestern Iowa...
  Harrison County in southwestern Iowa...
  Sarpy County in east central Nebraska...
  Burt County in east central Nebraska...
  Washington County in east central Nebraska...
  Eastern Dodge County in east central Nebraska...
  Douglas County in east central Nebraska...
  Southeastern Thurston County in northeastern Nebraska...
  Eastern Saunders County in east central Nebraska...
  Northeastern Cass County in southeastern Nebraska...

* Until 315 AM CDT.

* At 214 AM CDT, severe thunderstorms were located along a line
  extending from 4 miles south of Macy to Yutan, moving east at 65
  mph.

  HAZARD...70 mph wind gusts. This storm has a history of producing 
           widespread wind damage. 

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Whiting and Decatur around 220 AM CDT.
  Gretna, Onawa, Elkhorn and Millard around 225 AM CDT.

Other locations in the path of these severe thunderstorms include
Bellevue, Papillion, La Vista, Ralston, Council Bluffs, Ute, Treynor,
Carson, Macedonia and Oakland.

People near TD Ameritrade Park should seek safe shelter immediately!

This includes the following highways...
 Interstate 29 between mile markers 35 and 125.
 Interstate 80 in Iowa between mile markers 1 and 34.
 Interstate 80 in Nebraska between mile markers 430 and 454.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 4105 9659 4221 9645 4220 9567 4187 9567
      4186 9556 4160 9556 4160 9550 4150 9549
      4150 9540 4103 9538
TIME...MOT...LOC 0714Z 270DEG 57KT 4205 9633 4124 9642 

HAIL...<.75IN
WIND...70MPH
 
$$

Nicolaisen

1 follow-up statement

400 
WWUS53 KOAX 240735
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
235 AM CDT Thu Jun 24 2021

IAC085-129-133-155-NEC021-025-053-055-153-155-173-177-240815-
/O.CON.KOAX.SV.W.0067.000000T0000Z-210624T0815Z/
Monona IA-Mills IA-Pottawattamie IA-Harrison IA-Sarpy NE-Burt NE-
Washington NE-Dodge NE-Douglas NE-Thurston NE-Saunders NE-Cass NE-
235 AM CDT Thu Jun 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT
FOR MONONA...NORTHERN MILLS...POTTAWATTAMIE...HARRISON...SARPY...
BURT...WASHINGTON...EASTERN DODGE...DOUGLAS...SOUTHEASTERN
THURSTON...EASTERN SAUNDERS AND NORTHEASTERN CASS COUNTIES...

At 234 AM CDT, severe thunderstorms were located along a line
extending from 7 miles east of Onawa to Omaha, moving east at 65 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
  Council Bluffs, Ute, Treynor, Oakland, Carson and Macedonia.

People near TD Ameritrade Park should seek safe shelter immediately!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4105 9659 4221 9645 4220 9567 4187 9567
      4186 9556 4160 9556 4160 9550 4150 9549
      4150 9540 4103 9538
TIME...MOT...LOC 0734Z 270DEG 57KT 4205 9595 4124 9604 

HAIL...<.75IN
WIND...60MPH
 
$$

Nicolaisen

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 11:27 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Knox, Madison, Pierce	48 min
Jun 24, 12:12 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Madison, Pierce, Stanton, Wayne	48 min
Jun 24, 12:40 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison, Platte	50 min
Jun 24, 12:58 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Colfax, Cuming, Madison, Pierce and 3 more	47 min
Jun 24, 1:11 AM CDT	Tornado Warning	OAX	Madison, Stanton	34 min
Jun 24, 1:22 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Butler, Colfax, Cuming, Dodge, Madison and 5 more	23 min
Jun 24, 1:41 AM CDT	Tornado Warning	OAX	Colfax, Cuming, Dodge, Stanton	34 min
Jun 24, 1:43 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Butler, Colfax, Cuming, Dodge, Douglas and 7 more	47 min
Jun 24, 1:55 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Lancaster, Saunders, Seward	50 min
Jun 24, 2:24 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Gage, Jefferson, Lancaster, Otoe, Saline and 1 more	51 min
Jun 24, 2:51 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Gage, Johnson, Lancaster, Otoe, Sarpy	39 min
Jun 24, 2:54 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Gage, Johnson, Lancaster, Otoe, Sarpy	36 min
Jun 24, 3:17 AM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Otoe, Pawnee, Richardson	58 min
Jun 24, 2:23 PM CDT	Flash Flood Watch	OAX	Cass, Gage, Jefferson, Johnson, Lancaster, Nemaha and 4 more	37 hr
Jun 24, 5:10 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster, Otoe	40 min
Jun 24, 5:34 PM CDT	Flash Flood Warning	OAX	Cass, Lancaster, Otoe	4 hr
Jun 24, 5:35 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Saline, Seward	40 min
Jun 24, 5:43 PM CDT	Tornado Warning	OAX	Otoe	47 min
Jun 24, 5:51 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy, Saunders	54 min
Jun 24, 5:55 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saline, Seward	50 min
Jun 24, 6:07 PM CDT	Tornado Warning	OAX	Otoe	38 min
Jun 24, 6:12 PM CDT	Flash Flood Warning	OAX	Pawnee, Richardson	8 hr
Jun 24, 6:12 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Lancaster, Saline, Seward	48 min
Jun 24, 6:16 PM CDT	Special Weather Statement	OAX	Douglas	89 min
Jun 24, 6:28 PM CDT	Severe Thunderstorm Warning	OAX	Richardson	47 min
Jun 24, 6:32 PM CDT	Flash Flood Warning	OAX	Cass	3 hr
Jun 24, 6:34 PM CDT	Tornado Warning	OAX	Richardson	41 min
Jun 24, 6:43 PM CDT	Severe Thunderstorm Warning	OAX	Otoe	47 min
Jun 24, 6:48 PM CDT	Flash Flood Warning	OAX	Saline, Seward	3 hr

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.