Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 71, NWS Omaha, NE

June 24, 20214 counties in Iowa; 5 counties in Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 24, 2021, 3:17 AM CDT for 4 counties in Iowa; 5 counties in Nebraska. It was in force for 58 min. 1 report 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, 3:17 AM CDT (08:17 UTC)
Expired
Jun 24, 2021, 4:15 AM CDT
In force
58 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE

The radar

The Omaha radar (KOAX), 123 km from the middle of the area, began a volume at 08:16 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
Jun 24, 3:39 AM CDTHAIL 11 Se Nebraska City, NEREPORT FROM MPING: QUARTER (1.00 IN.).

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
Jun 23, 10:37 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 24, 2:20 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 8.3 hours before the alert went out and 123 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 00:00Z on 2021-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2039 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2021-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.193958Sfc1 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
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.

379 
WUUS53 KOAX 240817
SVROAX
IAC071-129-137-145-NEC097-127-131-133-147-240915-
/O.NEW.KOAX.SV.W.0071.210624T0817Z-210624T0915Z/

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

The National Weather Service in Omaha has issued a

* Severe Thunderstorm Warning for...
  Fremont County in southwestern Iowa...
  Southwestern Montgomery County in southwestern Iowa...
  Southeastern Mills County in southwestern Iowa...
  Page County in southwestern Iowa...
  Johnson County in southeastern Nebraska...
  Nemaha County in southeastern Nebraska...
  Eastern Otoe County in southeastern Nebraska...
  Richardson County in southeastern Nebraska...
  Pawnee County in southeastern Nebraska...

* Until 415 AM CDT.

* At 316 AM CDT, severe thunderstorms were located along a line
  extending from 4 miles southeast of Glenwood to 8 miles southwest
  of Sterling, moving southeast at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Malvern around 320 AM CDT.

Other locations in the path of these severe thunderstorms include
Shenandoah, Pawnee City, Essex, Table Rock, Humboldt, Coin, Clarinda
and Braddyville.

This includes Interstate 29 between mile markers 1 and 17.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4026 9647 4105 9552 4089 9492 4057 9492
      4057 9578 4054 9577 4053 9577 4055 9565
      4047 9569 4046 9564 4034 9562 4031 9566
      4030 9557 4023 9547 4018 9548 4012 9540
      4005 9542 4001 9533 4000 9534 4000 9620
TIME...MOT...LOC 0816Z 305DEG 50KT 4101 9569 4035 9644 

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

Nicolaisen
1 follow-up statement
538 
WWUS53 KOAX 240841
SVSOAX

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

IAC071-129-137-145-NEC097-127-131-133-147-240915-
/O.CON.KOAX.SV.W.0071.000000T0000Z-210624T0915Z/
Fremont IA-Montgomery IA-Mills IA-Page IA-Johnson NE-Nemaha NE-
Otoe NE-Richardson NE-Pawnee NE-
341 AM CDT Thu Jun 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 AM CDT
FOR FREMONT...SOUTHWESTERN MONTGOMERY...SOUTHEASTERN MILLS...PAGE...
JOHNSON...NEMAHA...EASTERN OTOE...RICHARDSON AND PAWNEE COUNTIES...

At 340 AM CDT, severe thunderstorms were located along a line
extending from near Essex to Table Rock, moving southeast at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Shenandoah and Essex around 345 AM CDT.
  Coin around 355 AM CDT.
  Clarinda around 400 AM CDT.
  Braddyville around 405 AM CDT.

Other locations impacted by these severe thunderstorms include
Dawson, Rulo, Preston, Camp Catron, College Springs, Brownville,
Coburg, Braddyville, Shambaugh and Tabor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4026 9647 4105 9552 4089 9492 4057 9492
      4057 9578 4054 9577 4053 9577 4055 9565
      4047 9569 4046 9564 4034 9562 4031 9566
      4030 9557 4023 9547 4018 9548 4012 9540
      4005 9542 4001 9533 4000 9534 4000 9620
TIME...MOT...LOC 0840Z 305DEG 50KT 4083 9536 4017 9611 

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

Nicolaisen

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 1:43 AM CDTSevere Thunderstorm WarningOAXMonona47 min
Jun 24, 2:15 AM CDTSevere Thunderstorm WarningOAXHarrison, Mills, Monona, Pottawattamie60 min
Jun 24, 2:51 AM CDTSevere Thunderstorm WarningOAXFremont, Mills, Montgomery39 min
Jun 24, 2:54 AM CDTSevere Thunderstorm WarningOAXMills36 min
Jun 24, 2:23 PM CDTFlash Flood WatchOAXFremont, Page37 hr
Jun 24, 6:43 PM CDTSevere Thunderstorm WarningOAXFremont47 min
Jun 23, 11:27 PM CDTSevere Thunderstorm WarningOAXAntelope, Knox, Madison, Pierce48 min
Jun 24, 12:12 AM CDTSevere Thunderstorm WarningOAXAntelope, Madison, Pierce, Stanton, Wayne48 min
Jun 24, 12:40 AM CDTSevere Thunderstorm WarningOAXAntelope, Boone, Madison, Platte50 min
Jun 24, 12:58 AM CDTSevere Thunderstorm WarningOAXAntelope, Boone, Colfax, Cuming, Madison, Pierce and 3 more47 min
Jun 24, 1:11 AM CDTTornado WarningOAXMadison, Stanton34 min
Jun 24, 1:22 AM CDTSevere Thunderstorm WarningOAXBurt, Butler, Colfax, Cuming, Dodge, Madison and 5 more23 min
Jun 24, 1:41 AM CDTTornado WarningOAXColfax, Cuming, Dodge, Stanton34 min
Jun 24, 1:55 AM CDTSevere Thunderstorm WarningOAXButler, Colfax, Dodge, Lancaster, Saunders, Seward50 min
Jun 24, 2:24 AM CDTSevere Thunderstorm WarningOAXCass, Gage, Jefferson, Lancaster, Otoe, Saline and 1 more51 min
Jun 24, 5:10 PM CDTSevere Thunderstorm WarningOAXCass, Lancaster, Otoe40 min
Jun 24, 5:34 PM CDTFlash Flood WarningOAXCass, Lancaster, Otoe4 hr
Jun 24, 5:35 PM CDTSevere Thunderstorm WarningOAXGage, Jefferson, Saline, Seward40 min
Jun 24, 5:43 PM CDTTornado WarningOAXOtoe47 min
Jun 24, 5:51 PM CDTSevere Thunderstorm WarningOAXCass, Sarpy, Saunders54 min
Jun 24, 5:55 PM CDTSevere Thunderstorm WarningOAXLancaster, Saline, Seward50 min
Jun 24, 6:07 PM CDTTornado WarningOAXOtoe38 min
Jun 24, 6:12 PM CDTFlash Flood WarningOAXPawnee, Richardson8 hr
Jun 24, 6:12 PM CDTSevere Thunderstorm WarningOAXGage, Lancaster, Saline, Seward48 min
Jun 24, 6:16 PM CDTSpecial Weather StatementOAXDouglas89 min
Jun 24, 6:28 PM CDTSevere Thunderstorm WarningOAXRichardson47 min
Jun 24, 6:32 PM CDTFlash Flood WarningOAXCass3 hr
Jun 24, 6:34 PM CDTTornado WarningOAXRichardson41 min
Jun 24, 6:48 PM CDTFlash Flood WarningOAXSaline, Seward3 hr

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.