Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS North Platte, NE

May 13, 2021Arthur County, Keith County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 13, 2021, 4:44 PM MDT for Arthur County, Keith County, Nebraska. It was in force for 46 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: May 13, 2021, 4:44 PM MDT (22:44 UTC)
Expired: May 13, 2021, 5:30 PM MDT
In force: 46 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Arthur County, NE, Keith County, NE

The radar

The North Platte radar (KLNX), 102 km from the middle of the area, began a volume at 22:46 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
May 13, 4:48 PM MDT	HAIL 0.88	12 S Arthur, NE	DELAYED REPORT. ESTIMATED NICKLE SIZED HAIL REPORTED VIA FACEBOOK.
May 13, 4:59 PM MDT	TSTM WND GST 65	10 Sw Bucktail Lake, NE
May 13, 4:59 PM MDT	HAIL 1	10 Sw Bucktail Lake, NE

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, 10.7 hours before the alert went out and 85 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 957 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 306 m²/s²
0-3 km storm-relative helicity: 262 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

140 
WUUS53 KLBF 132244
SVRLBF
NEC005-101-132330-
/O.NEW.KLBF.SV.W.0007.210513T2244Z-210513T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
444 PM MDT Thu May 13 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southeastern Arthur County in west central Nebraska...
  Northeastern Keith County in southwestern Nebraska...

* Until 530 PM MDT.

* At 443 PM MDT, a severe thunderstorm was located 7 miles south of
  Arthur, 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...
  Arthur, Keystone, Big Bald Hill, Broganville and McKeag. 

This includes the following highways...
 Highway 61 between mile markers 105 and 125.
 Highway 92 near mile marker 165.

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 4147 10185 4159 10167 4142 10140 4140 10140
      4140 10136 4134 10127 4114 10158
TIME...MOT...LOC 2243Z 318DEG 20KT 4147 10169 

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

Jurgensen

1 follow-up statement

298 
WWUS53 KLBF 132301
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
501 PM MDT Thu May 13 2021

NEC005-101-132330-
/O.CON.KLBF.SV.W.0007.000000T0000Z-210513T2330Z/
Arthur NE-Keith NE-
501 PM MDT Thu May 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM MDT
FOR SOUTHEASTERN ARTHUR AND NORTHEASTERN KEITH COUNTIES...

At 500 PM MDT, a severe thunderstorm was located 11 miles north of
Keystone, or 15 miles southeast of Arthur, moving southeast at 30
mph.

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

SOURCE...Radar indicated. At 459 PM MDT, Public reported quarter 
         size hail and 65 mph wind gusts in southeast Arthur County.

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

Locations impacted include...
Keystone, Big Bald Hill, Broganville and McKeag. 

This includes Highway 61 between mile markers 109 and 118.
 
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 4147 10179 4156 10162 4142 10140 4140 10140
      4140 10136 4134 10127 4114 10158 4116 10160
TIME...MOT...LOC 2300Z 313DEG 26KT 4138 10153 

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

Jurgensen

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 2:04 PM MDT	Special Weather Statement	LBF	Cherry	41 min
May 13, 2:12 PM MDT	Special Weather Statement	LBF	Cherry	48 min
May 13, 2:17 PM MDT	Special Weather Statement	LBF	Grant	43 min
May 13, 2:44 PM MDT	Severe Thunderstorm Warning	LBF	Grant, Sheridan	46 min
May 13, 2:49 PM MDT	Severe Thunderstorm Warning	LBF	Garden	41 min
May 13, 3:12 PM MDT	Special Weather Statement	LBF	Thomas	48 min
May 13, 3:27 PM MDT	Special Weather Statement	LBF	Arthur, Grant	48 min
May 13, 3:36 PM MDT	Special Weather Statement	LBF	Chase	24 min
May 13, 3:43 PM MDT	Special Weather Statement	LBF	Arthur	47 min
May 13, 3:53 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Grant	52 min
May 13, 3:56 PM MDT	Special Weather Statement	LBF	Thomas	49 min
May 13, 3:58 PM MDT	Special Weather Statement	LBF	Chase	47 min
May 13, 5:10 PM MDT	Special Weather Statement	LBF	Logan	50 min
May 13, 5:12 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Lincoln, McPherson, Perkins	48 min
May 13, 5:30 PM MDT	Special Weather Statement	LBF	McPherson	45 min
May 13, 5:36 PM MDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan, Thomas	39 min
May 13, 5:50 PM MDT	Severe Thunderstorm Warning	LBF	Hayes, Keith, Lincoln, Perkins	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.