Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 121, NWS North Platte, NE

August 14, 20214 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 14, 2021, 8:14 AM MDT for 4 counties in Nebraska. It was in force for 46 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: Aug 14, 2021, 8:14 AM MDT (14:14 UTC)
Expired: Aug 14, 2021, 9:00 AM MDT
In force: 46 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Chase County, NE, Hayes County, NE, Lincoln County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 151 km from the middle of the area, began a volume at 14:17 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
Aug 14, 8:56 AM MDT	HAIL 1	9 Ssw Grainton, NE	TIME ESTIMATED FROM RADAR. HAIL LASTED APPROXIMATELY 5 TO 6 MINUTES.

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 2.2 hours before the alert went out and 79 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: 993 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

As transmitted.

147 
WUUS53 KLBF 141414
SVRLBF
NEC029-085-111-135-141500-
/O.NEW.KLBF.SV.W.0121.210814T1414Z-210814T1500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
914 AM CDT Sat Aug 14 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southeastern Perkins County in southwestern Nebraska...
  Northeastern Chase County in southwestern Nebraska...
  Southwestern Lincoln County in southwestern Nebraska...
  Northwestern Hayes County in southwestern Nebraska...

* Until 1000 AM CDT/900 AM MDT/.

* At 914 AM CDT/814 AM MDT/, a severe thunderstorm was located 7
  miles south of Elsie, or 19 miles east of Grant, moving southeast
  at 10 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  southeastern Perkins, northeastern Chase, southwestern Lincoln and
  northwestern Hayes Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4073 10149 4083 10137 4070 10105 4048 10132
TIME...MOT...LOC 1414Z 318DEG 10KT 4074 10139 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Snively

2 follow-up statements

245 
WWUS53 KLBF 141432
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
932 AM CDT Sat Aug 14 2021

NEC029-085-111-135-141500-
/O.CON.KLBF.SV.W.0121.000000T0000Z-210814T1500Z/
Perkins NE-Chase NE-Lincoln NE-Hayes NE-
932 AM CDT Sat Aug 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 AM
CDT/900 AM MDT/ FOR SOUTHEASTERN PERKINS...NORTHEASTERN CHASE...
SOUTHWESTERN LINCOLN AND NORTHWESTERN HAYES COUNTIES...

At 931 AM CDT/831 AM MDT/, a severe thunderstorm was located 9 miles
south of Elsie, or 20 miles northeast of Imperial, moving southeast
at 10 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 Perkins, northeastern Chase, southwestern Lincoln and
northwestern Hayes Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4082 10138 4070 10105 4048 10132 4074 10148
TIME...MOT...LOC 1431Z 302DEG 8KT 4071 10134 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Snively

766 
WWUS53 KLBF 141451
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
951 AM CDT Sat Aug 14 2021

NEC111-141501-
/O.CAN.KLBF.SV.W.0121.000000T0000Z-210814T1500Z/
Lincoln NE-
951 AM CDT Sat Aug 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LINCOLN COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4052 10127 4070 10142 4077 10135 4073 10125
      4070 10125 4070 10116 4067 10109 4062 10114
TIME...MOT...LOC 1451Z 292DEG 8KT 4071 10131 

$$

NEC029-085-135-141500-
/O.CON.KLBF.SV.W.0121.000000T0000Z-210814T1500Z/
Perkins NE-Chase NE-Hayes NE-
951 AM CDT Sat Aug 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 AM
CDT/900 AM MDT/ FOR SOUTHEASTERN PERKINS...NORTHEASTERN CHASE AND
NORTHWESTERN HAYES COUNTIES...

At 951 AM CDT/851 AM MDT/, a severe thunderstorm was located 10 miles
south of Elsie, or 20 miles northwest of Hayes Center, moving
southeast at 10 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 remain over mainly rural areas of
southeastern Perkins, northeastern Chase and northwestern Hayes
Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4052 10127 4070 10142 4077 10135 4073 10125
      4070 10125 4070 10116 4067 10109 4062 10114
TIME...MOT...LOC 1451Z 292DEG 8KT 4071 10131 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Snively

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 5:09 AM MDT	Special Weather Statement	LBF	Keith	51 min
Aug 14, 5:18 AM MDT	Severe Thunderstorm Warning	LBF	Keith	42 min
Aug 14, 5:43 AM MDT	Severe Thunderstorm Warning	LBF	Keith	47 min
Aug 14, 5:51 AM MDT	Severe Thunderstorm Warning	LBF	Keith	19 min
Aug 14, 5:56 AM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, McPherson	49 min
Aug 14, 6:23 AM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	37 min
Aug 14, 6:44 AM MDT	Special Weather Statement	LBF	McPherson	46 min
Aug 14, 6:59 AM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Perkins	46 min
Aug 14, 7:35 AM MDT	Special Weather Statement	LBF	Keith	40 min
Aug 14, 7:44 AM MDT	Severe Thunderstorm Warning	LBF	Chase, Hayes, Perkins	31 min
Aug 14, 8:33 AM MDT	Special Weather Statement	LBF	Perkins	42 min
Aug 14, 8:49 AM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	41 min
Aug 14, 8:59 AM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Hayes, Perkins	26 min
Aug 14, 9:28 AM MDT	Severe Thunderstorm Warning	LBF	Perkins	47 min
Aug 14, 10:02 AM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Hayes, Lincoln, Perkins	43 min
Aug 14, 10:44 AM MDT	Special Weather Statement	LBF	Hayes	46 min
Aug 14, 11:39 AM MDT	Special Weather Statement	LBF	Lincoln	51 min
Aug 14, 12:29 PM MDT	Special Weather Statement	LBF	Lincoln	46 min
Aug 14, 4:16 PM MDT	Special Weather Statement	LBF	Dawes	59 min
Aug 14, 4:21 PM MDT	Special Weather Statement	LBF	Sheridan	39 min
Aug 14, 4:26 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	49 min
Aug 14, 4:28 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	47 min
Aug 14, 4:56 PM MDT	Special Weather Statement	LBF	Sheridan	49 min
Aug 14, 5:01 PM MDT	Special Weather Statement	LBF	Sheridan	44 min
Aug 14, 5:06 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	39 min
Aug 14, 5:44 PM MDT	Special Weather Statement	LBF	Sheridan	46 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 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.