Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 130, NWS North Platte, NE

August 14, 2021Garden County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 14, 2021, 7:34 PM MDT for Garden County, Nebraska. It was in force for 26 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: Aug 14, 2021, 7:34 PM MDT (01:34 UTC)
Expired: Aug 14, 2021, 8:00 PM MDT
In force: 26 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Garden County, NE

The radar

The North Platte radar (KLNX), 169 km from the middle of the area, began a volume at 01:37 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, 7:36 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.
Aug 14, 8:05 PM MDT	HAIL 1	9 Ssw Oshkosh, 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.

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, 1.6 hours before the alert went out and 157 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.

742 
WUUS53 KLBF 150134
SVRLBF
NEC069-150200-
/O.NEW.KLBF.SV.W.0130.210815T0134Z-210815T0200Z/

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

The National Weather Service in North Platte has issued a

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

* Until 800 PM MDT.

* At 733 PM MDT, a severe thunderstorm was located over Oshkosh,
  moving south 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 and Intersection of Highway 27 and 9 Mile Road. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4152 10247 4146 10224 4122 10231 4122 10261
      4125 10261
TIME...MOT...LOC 0133Z 016DEG 25KT 4142 10239 

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

$$

NMJ

1 follow-up statement

949 
WWUS53 KLBF 150158
SVSLBF

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

NEC069-150207-
/O.EXP.KLBF.SV.W.0130.000000T0000Z-210815T0200Z/
Garden NE-
758 PM MDT Sat Aug 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN GARDEN COUNTY
WILL EXPIRE AT 800 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 Nebraska.

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

Remember, a Severe Thunderstorm Warning still remains in effect for
southern Garden and central Deuel Counties.

LAT...LON 4152 10247 4146 10224 4122 10231 4122 10261
      4125 10261
TIME...MOT...LOC 0157Z 016DEG 25KT 4126 10245 

$$

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, 6:59 PM MDT	Severe Thunderstorm Warning	LBF	Garden	46 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.