Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 4, NWS North Platte, NE

May 13, 2021Grant County, Sheridan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 13, 2021, 2:44 PM MDT for Grant County, Sheridan County, 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: May 13, 2021, 2:44 PM MDT (20:44 UTC)
Expired: May 13, 2021, 3:30 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 Grant County, NE, Sheridan County, NE

The radar

The North Platte radar (KLNX), 123 km from the middle of the area, began a volume at 20:46 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, 3:22 PM MDT	HAIL 1.25	10 S Ashby, NE	DELAYED REPORT. ESTIMATED 1 1/4 INCH HAIL VIA FACEBOOK AND VERIFIED VIA RADAR FROM THAT TIME.

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, 8.7 hours before the alert went out and 154 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.

628 
WUUS53 KLBF 132044
SVRLBF
NEC075-161-132130-
/O.NEW.KLBF.SV.W.0004.210513T2044Z-210513T2130Z/

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

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Western Grant County in west central Nebraska...
  Southeastern Sheridan County in the Panhandle of Nebraska...

* Until 330 PM MDT.

* At 242 PM MDT, a severe thunderstorm was located near Ellsworth, or
  35 miles east of Alliance, 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.

* Locations impacted include...
  Ellsworth, Hyannis, Ashby, Bingham, Finnegan Lake, Dominick Lake,
  Swede Lake and Kennedy Lake.

This includes the following highways...
 Highway 2 between mile markers 118 and 147.
 Highway 61 between mile markers 146 and 148, and between mile
markers 156 and 163.

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.

&&

LAT...LON 4212 10226 4206 10170 4174 10181 4174 10206
      4201 10207 4201 10231
TIME...MOT...LOC 2042Z 284DEG 20KT 4202 10220 

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

Jurgensen

2 follow-up statements

826 
WWUS53 KLBF 132109
SVSLBF

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

NEC075-161-132130-
/O.CON.KLBF.SV.W.0004.000000T0000Z-210513T2130Z/
Grant NE-Sheridan NE-
309 PM MDT Thu May 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM MDT
FOR WESTERN GRANT AND SOUTHEASTERN SHERIDAN COUNTIES...

At 308 PM MDT, a severe thunderstorm was located 7 miles southwest of
Ashby, or 30 miles northwest of Arthur, moving east at 20 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...
Hyannis, Ashby, Finnegan Lake, Dominick Lake, Swede Lake and Bingham.

This includes the following highways...
 Highway 2 between mile markers 125 and 147.
 Highway 61 between mile markers 146 and 148, and between mile
markers 156 and 163.

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.

&&

LAT...LON 4206 10170 4174 10181 4174 10206 4201 10207
      4201 10220 4210 10207
TIME...MOT...LOC 2108Z 281DEG 18KT 4194 10202 

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

Jurgensen

959 
WWUS53 KLBF 132127
SVSLBF

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

NEC075-161-132137-
/O.EXP.KLBF.SV.W.0004.000000T0000Z-210513T2130Z/
Grant NE-Sheridan NE-
327 PM MDT Thu May 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN GRANT AND SOUTHEASTERN
SHERIDAN COUNTIES WILL EXPIRE AT 330 PM MDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
and gusty winds are still possible with this thunderstorm.

LAT...LON 4206 10170 4174 10181 4174 10206 4201 10207
      4201 10220 4210 10207
TIME...MOT...LOC 2127Z 284DEG 20KT 4192 10189 

$$

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, 2:49 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, 4:44 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	46 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.