Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 39, NWS Omaha, NE

June 11, 2021Pawnee County, Richardson County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 11, 2021, 11:45 AM CDT for Pawnee County, Richardson County, Nebraska. It was in force for 45 min. 3 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 11, 2021, 11:45 AM CDT (16:45 UTC)
Expired
Jun 11, 2021, 12:30 PM CDT
In force
45 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Pawnee County, NE, Richardson County, NE

The radar

The Topeka radar (KTWX), 124 km from the middle of the area, began a volume at 16:48 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, 12:03 PM CDTTSTM WND GST 501 W Pawnee City, NE
Jun 11, 12:22 PM CDTTSTM WND DMGDu Bois, NECORRECTS PREVIOUS TSTM WND DMG REPORT FROM DU BOIS. TREES DOWN IN DU BOIS WITH REPORT OF TREES DOWN ALONG HWY 50 NORTH OF TOWN.
Jun 11, 12:22 PM CDTTSTM WND DMGDu Bois, NETREES DOWN IN DU BOIS WITH REPORT OF TREES DOWN ALONG HWY 50 NORTH OF TOWN.

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

Topeka, KS (KTOP), launched 12:00Z, 4.8 hours before the alert went out and 132 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, Topeka, KS at 12:00Z on 2021-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2135 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, Topeka, KS at 12:00Z on 2021-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.1939Sfc1 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
2135 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
1019 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.2

Open this sounding in Storm Lab

The text

As transmitted.

211 
WUUS53 KOAX 111645
SVROAX
NEC133-147-111730-
/O.NEW.KOAX.SV.W.0039.210611T1645Z-210611T1730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Omaha/Valley Nebraska
1145 AM CDT Fri Jun 11 2021

The National Weather Service in Omaha has issued a

* Severe Thunderstorm Warning for...
  Western Richardson County in southeastern Nebraska...
  Pawnee County in southeastern Nebraska...

* Until 1230 PM CDT.

* At 1145 AM CDT, a severe thunderstorm was located near Pawnee City,
  or 22 miles north of Seneca, moving east at 30 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 be near...
  Pawnee City around 1155 AM CDT.
  Table Rock around 1200 PM CDT.

Other locations in the path of this severe thunderstorm include
Humboldt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4001 9637 4026 9631 4026 9625 4022 9584
      4000 9588 4000 9627
TIME...MOT...LOC 1645Z 279DEG 24KT 4013 9622 

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

Mead
2 follow-up statements
551 
WWUS53 KOAX 111655
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
1155 AM CDT Fri Jun 11 2021

NEC133-147-111730-
/O.CON.KOAX.SV.W.0039.000000T0000Z-210611T1730Z/
Richardson NE-Pawnee NE-
1155 AM CDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR WESTERN RICHARDSON AND PAWNEE COUNTIES...

At 1155 AM CDT, a severe thunderstorm was located over Pawnee City,
or 20 miles north of Seneca, 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 storm will be near...
  Table Rock around 1205 PM CDT.

Other locations in the path of this severe thunderstorm include
Humboldt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4003 9632 4026 9631 4026 9625 4022 9584
      4000 9588 4000 9627
TIME...MOT...LOC 1655Z 281DEG 21KT 4011 9617 

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

Mead
700 
WWUS53 KOAX 111722
SVSOAX

Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
1222 PM CDT Fri Jun 11 2021

NEC133-147-111730-
/O.EXP.KOAX.SV.W.0039.000000T0000Z-210611T1730Z/
Richardson NE-Pawnee NE-
1222 PM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN RICHARDSON AND PAWNEE
COUNTIES WILL EXPIRE AT 1230 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

Remember, a Severe Thunderstorm Warning still remains in effect for
portions of eastern Pawnee county until 1 PM.

LAT...LON 4003 9632 4026 9631 4026 9625 4022 9584
      4000 9588 4000 9627
TIME...MOT...LOC 1720Z 279DEG 24KT 4009 9597 

$$

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, 12:11 PM CDTSevere Thunderstorm WarningOAXNemaha, Richardson34 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.