Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS North Platte, NE

September 16, 2021Chase County, Perkins County, Nebraska

NWS North Platte, NE issued this special weather statement at Sep 16, 2021, 10:21 PM MDT for Chase County, Perkins County, Nebraska. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 16, 2021, 10:21 PM MDT (04:21 UTC)
Expired: Sep 16, 2021, 11:00 PM MDT
In force: 39 min
Issued by: NWS North Platte, NE
Hail: 0.25 in
Wind: 50

Counties Chase County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 152 km from the middle of the area, began a volume at 04:23 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.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.4 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: 1601 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 2561 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted.

816 
WWUS83 KLBF 170421
SPSLBF

Special Weather Statement
National Weather Service North Platte NE
1121 PM CDT Thu Sep 16 2021
 
NEZ057>059-069-070-170500-
Chase NE-Hayes NE-Perkins NE-Lincoln NE-Keith NE-
1121 PM CDT Thu Sep 16 2021

...Strong thunderstorms will impact portions of Perkins, southeastern
Keith, Chase, southwestern Lincoln and northern Hayes Counties
through MIDNIGHT CDT/1100 PM MDT/...

At 1121 PM CDT/1021 PM MDT/, Doppler radar was tracking strong
thunderstorms along a line extending from near Grant to 8 miles north
of Wauneta. Movement was northeast at 30 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Imperial, Grant, Paxton, Wallace, Madrid, Elsie, Enders, Enders
Reservoir State Recreation Area, Champion, Chase, Grainton, Center
Dam Campground, Brandon, Wild Horse Spring, Marengo, Wanamaker State
Wildfire Management Area and Church Grove Campground.

This includes the following highways...
 Highway 61 between mile markers 41 and 77.
 Interstate 80 in Nebraska between mile markers 142 and 146.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

A Severe Thunderstorm Watch remains in effect until 300 AM CDT/200 AM
MDT/ for southwestern Nebraska.

&&

LAT...LON 4113 10136 4066 10081 4042 10155 4051 10195
      4088 10202
TIME...MOT...LOC 0421Z 244DEG 28KT 4084 10177 4054 10138 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

$$

Snively

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 16, 6:20 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	40 min
Sep 16, 6:38 PM MDT	Special Weather Statement	LBF	Keith	52 min
Sep 16, 6:51 PM MDT	Special Weather Statement	LBF	Sheridan	39 min
Sep 16, 6:58 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Lincoln, McPherson, Perkins	47 min
Sep 16, 7:21 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	39 min
Sep 16, 7:27 PM MDT	Special Weather Statement	LBF	Perkins	33 min
Sep 16, 7:33 PM MDT	Special Weather Statement	LBF	Cherry	42 min
Sep 16, 7:35 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Hooker, Lincoln, Logan, McPherson and 1 more	55 min
Sep 16, 7:55 PM MDT	Special Weather Statement	LBF	Cherry	50 min
Sep 16, 8:00 PM MDT	Special Weather Statement	LBF	Lincoln	45 min
Sep 16, 8:09 PM MDT	Special Weather Statement	LBF	Cherry	36 min
Sep 16, 8:27 PM MDT	Special Weather Statement	LBF	Custer, Logan	63 min
Sep 16, 8:31 PM MDT	Special Weather Statement	LBF	Lincoln	59 min
Sep 16, 8:36 PM MDT	Special Weather Statement	LBF	Cherry	39 min
Sep 16, 8:37 PM MDT	Special Weather Statement	LBF	Chase	68 min
Sep 16, 8:47 PM MDT	Special Weather Statement	LBF	Arthur, Hooker, McPherson, Thomas	43 min
Sep 16, 8:56 PM MDT	Special Weather Statement	LBF	Garfield, Holt, Loup, Rock	49 min
Sep 16, 9:15 PM MDT	Special Weather Statement	LBF	Lincoln	45 min
Sep 16, 9:28 PM MDT	Special Weather Statement	LBF	Custer	62 min
Sep 16, 9:30 PM MDT	Special Weather Statement	LBF	McPherson	45 min
Sep 16, 9:50 PM MDT	Special Weather Statement	LBF	Lincoln	25 min
Sep 16, 9:54 PM MDT	Special Weather Statement	LBF	Boyd	51 min
Sep 16, 9:56 PM MDT	Special Weather Statement	LBF	Chase	34 min
Sep 16, 10:14 PM MDT	Special Weather Statement	LBF	Logan, Thomas	46 min
Sep 16, 10:57 PM MDT	Special Weather Statement	LBF	Hayes, Keith, Perkins	48 min
Sep 16, 10:58 PM MDT	Special Weather Statement	LBF	Blaine	47 min
Sep 16, 11:42 PM MDT	Special Weather Statement	LBF	Lincoln	48 min
Sep 17, 12:30 AM MDT	Special Weather Statement	LBF	Frontier	45 min

Nearby

Special Weather Statements in Nebraska, 2021 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.