Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 40, NWS Omaha, NE

June 11, 2021Nemaha County, Richardson County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 11, 2021, 12:11 PM CDT for Nemaha County, Richardson County, Nebraska. It was in force for 34 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 11, 2021, 12:11 PM CDT (17:11 UTC)
Expired
Jun 11, 2021, 12:45 PM CDT
In force
34 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Nemaha County, NE, Richardson County, NE

The radar

The Omaha radar (KOAX), 126 km from the middle of the area, began a volume at 17:11 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 11, 12:14 PM CDTHAIL 1.52 S Auburn, 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
Jun 11, 8:30 AM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 5.2 hours before the alert went out and 126 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 2021-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2132 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 12:00Z on 2021-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
2132 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
899 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

263 
WUUS53 KOAX 111711
SVROAX
NEC127-147-111745-
/O.NEW.KOAX.SV.W.0040.210611T1711Z-210611T1745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Omaha/Valley Nebraska
1211 PM CDT Fri Jun 11 2021

The National Weather Service in Omaha has issued a

* Severe Thunderstorm Warning for...
  Southeastern Nemaha County in southeastern Nebraska...
  North central Richardson County in southeastern Nebraska...

* Until 1245 PM CDT.

* At 1210 PM CDT, a severe thunderstorm was located over Auburn, or
  23 miles northwest of Falls City, moving east at 25 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Stella around 1220 PM CDT.
  Shubert around 1230 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4028 9594 4046 9589 4044 9565 4043 9564
      4042 9566 4034 9562 4031 9566 4031 9564
      4032 9561 4029 9555 4026 9555 4024 9547
      4016 9549
TIME...MOT...LOC 1710Z 281DEG 23KT 4036 9582 

HAIL...1.25IN
WIND...60MPH
 
$$

Mead
2 follow-up statements
218 
WWUS53 KOAX 111731
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
1231 PM CDT Fri Jun 11 2021

NEC127-147-111745-
/O.CON.KOAX.SV.W.0040.000000T0000Z-210611T1745Z/
Nemaha NE-Richardson NE-
1231 PM CDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT
FOR SOUTHEASTERN NEMAHA AND NORTH CENTRAL RICHARDSON COUNTIES...

At 1231 PM CDT, a severe thunderstorm was located 7 miles north of
Shubert, or 15 miles southwest of Tarkio, moving east at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
southeastern Nemaha and north central Richardson Counties, including
the following locations... Nemaha, Brownville, Brownville State
Recreation Area, Indian Cave State Park and Barada.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4027 9583 4044 9578 4044 9565 4043 9564
      4042 9566 4034 9562 4031 9566 4031 9564
      4032 9561 4029 9555 4026 9555 4024 9547
      4016 9549
TIME...MOT...LOC 1731Z 281DEG 23KT 4033 9565 

HAIL...1.00IN
WIND...60MPH
 
$$

Mead
338 
WWUS53 KOAX 111739
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
1239 PM CDT Fri Jun 11 2021

NEC127-147-111748-
/O.EXP.KOAX.SV.W.0040.000000T0000Z-210611T1745Z/
Nemaha NE-Richardson NE-
1239 PM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NEMAHA AND NORTH
CENTRAL RICHARDSON COUNTIES WILL EXPIRE AT 1245 PM CDT...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning will be allowed to expire. 
However gusty winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 300 PM CDT for
southeastern Nebraska.

LAT...LON 4027 9583 4044 9578 4044 9565 4043 9564
      4042 9566 4034 9562 4031 9566 4031 9564
      4032 9561 4029 9555 4026 9555 4024 9547
      4016 9549
TIME...MOT...LOC 1738Z 281DEG 23KT 4032 9560 

$$

Mead

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 5:27 AM CDTSevere Thunderstorm WarningOAXKnox33 min
Jun 11, 5:55 AM CDTSevere Thunderstorm WarningOAXAntelope, Cedar, Knox, Pierce, Wayne35 min
Jun 11, 6:45 AM CDTSevere Thunderstorm WarningOAXBoone30 min
Jun 11, 7:10 AM CDTSevere Thunderstorm WarningOAXBurt, Cuming, Madison, Platte, Stanton, Thurston35 min
Jun 11, 7:24 AM CDTSevere Thunderstorm WarningOAXPlatte36 min
Jun 11, 7:34 AM CDTSevere Thunderstorm WarningOAXBurt, Cuming, Dodge, Thurston26 min
Jun 11, 7:41 AM CDTSevere Thunderstorm WarningOAXButler, Colfax, Madison, Platte, Stanton34 min
Jun 11, 7:50 AM CDTSevere Thunderstorm WarningOAXBurt, Washington40 min
Jun 11, 8:13 AM CDTSevere Thunderstorm WarningOAXButler, Colfax, Platte47 min
Jun 11, 8:55 AM CDTSpecial Weather StatementOAXCass, Douglas, Sarpy35 min
Jun 11, 9:00 AM CDTSevere Thunderstorm WarningOAXButler, Lancaster, Saunders, Seward30 min
Jun 11, 10:43 AM CDTAreal Flood AdvisoryOAXLancaster3 hr
Jun 11, 10:51 AM CDTSevere Thunderstorm WarningOAXJohnson, Nemaha, Otoe39 min
Jun 11, 11:26 AM CDTSevere Thunderstorm WarningOAXJohnson, Nemaha, Richardson49 min
Jun 11, 11:45 AM CDTSevere Thunderstorm WarningOAXPawnee, Richardson45 min
Jun 11, 12:19 PM CDTSevere Thunderstorm WarningOAXPawnee, Richardson41 min
Jun 11, 12:25 PM CDTTornado WarningOAXRichardson16 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.