Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 129, NWS North Platte, NE

August 14, 2021Garden County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 14, 2021, 6:59 PM MDT for Garden County, Nebraska. It was in force for 46 min. 4 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: Aug 14, 2021, 6:59 PM MDT (00:59 UTC)
Expired: Aug 14, 2021, 7:45 PM MDT
In force: 46 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Garden County, NE

The radar

The North Platte radar (KLNX), 146 km from the middle of the area, began a volume at 01:02 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, 7:30 PM MDT	HAIL 1.25	1 N Oshkosh, NE
Aug 14, 7:30 PM MDT	HAIL 1.5	13 Wnw Lewellen, NE	PICTURE OF LARGE HAILSTONES TO PING PONG BALL SIZE VIA FACEBOOK NORTHWEST OF OSHKOSH.
Aug 14, 7:36 PM MDT	FUNNEL CLOUD	2 W Oshkosh, NE	REPORT FROM TRAINED SPOTTER OF FUNNEL CLOUD
Aug 14, 7:37 PM MDT	HAIL 1.25	1 W Oshkosh, NE	HALF DOLLAR SIZE HAIL AND 46 MPH WINDS.

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
Aug 14, 3:28 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.0 hours before the alert went out and 139 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: 1783 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1421 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 16.9

Open this sounding in Storm Lab

The text

As transmitted.

727 
WUUS53 KLBF 150059
SVRLBF
NEC069-150145-
/O.NEW.KLBF.SV.W.0129.210815T0059Z-210815T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
659 PM MDT Sat Aug 14 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southeastern Garden County in the Panhandle of Nebraska...

* Until 745 PM MDT.

* At 658 PM MDT, a severe thunderstorm was located 10 miles south of
  Crescent Lake National Wildlife Refuge, or 12 miles north of
  Oshkosh, moving southeast 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.

* Locations impacted include...
  Oshkosh, Lewellen, Bluewater Battlefield State Historical Park and
  Dogtown Flats.

This includes Highway 92 between mile markers 115 and 116.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in North Platte.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4163 10247 4170 10230 4142 10198 4140 10198
      4140 10205 4134 10206 4122 10231
TIME...MOT...LOC 0058Z 326DEG 25KT 4159 10235 

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

$$

NMJ

2 follow-up statements

540 
WWUS53 KLBF 150118
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
718 PM MDT Sat Aug 14 2021

NEC069-150145-
/O.CON.KLBF.SV.W.0129.000000T0000Z-210815T0145Z/
Garden NE-
718 PM MDT Sat Aug 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM MDT
FOR SOUTHEASTERN GARDEN COUNTY...

At 718 PM MDT, a severe thunderstorm was located near Oshkosh, moving
southeast 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.

Locations impacted include...
Oshkosh, Lewellen, Bluewater Battlefield State Historical Park and
Dogtown Flats.

This includes Highway 92 between mile markers 115 and 116.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
North Platte.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4162 10229 4140 10205 4134 10206 4122 10231
      4156 10244
TIME...MOT...LOC 0118Z 334DEG 22KT 4148 10231 

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

$$

NMJ

585 
WWUS53 KLBF 150143
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
743 PM MDT Sat Aug 14 2021

NEC069-150152-
/O.EXP.KLBF.SV.W.0129.000000T0000Z-210815T0145Z/
Garden NE-
743 PM MDT Sat Aug 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GARDEN COUNTY
WILL EXPIRE AT 745 PM MDT...
        
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 1100 PM MDT for
the Panhandle of and southwestern Nebraska.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
North Platte.

LAT...LON 4162 10229 4140 10205 4134 10206 4122 10231
      4156 10244
TIME...MOT...LOC 0142Z 326DEG 25KT 4134 10219 

$$

NMJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 6:27 PM MDT	Special Weather Statement	LBF	Garden	48 min
Aug 14, 7:34 PM MDT	Severe Thunderstorm Warning	LBF	Garden	26 min
Aug 14, 7:57 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	48 min
Aug 14, 11:31 PM MDT	Special Weather Statement	LBF	Loup	59 min
Aug 15, 12:27 AM MDT	Special Weather Statement	LBF	Rock	63 min
Aug 15, 1:23 AM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Brown, Rock	31 min
Aug 15, 3:26 AM MDT	Special Weather Statement	LBF	Sherman	64 min
Aug 15, 4:01 AM MDT	Areal Flood Advisory	LBF	Custer	102 min
Aug 15, 4:29 AM MDT	Special Weather Statement	LBF	Holt	46 min
Aug 15, 4:35 AM MDT	Special Weather Statement	LBF	Custer	40 min
Aug 15, 5:35 AM MDT	Special Weather Statement	LBF	Garfield	40 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.