Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS North Platte, NE

September 1, 2021Sheridan County, Nebraska

NWS North Platte, NE issued this special weather statement at Sep 1, 2021, 7:21 PM MDT for Sheridan County, Nebraska. It was in force for 54 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 1, 2021, 7:21 PM MDT (01:21 UTC)
Expired: Sep 1, 2021, 8:15 PM MDT
In force: 54 min
Issued by: NWS North Platte, NE
Hail: 0.75 in
Wind: 55

County Sheridan County, NE

The radar

The North Platte radar (KLNX), 160 km from the middle of the area, began a volume at 01:22 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

Rapid City, SD (KUNR), launched 00:00Z, 1.4 hours before the alert went out and 163 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: 549 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1203 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

As transmitted.

247 
WWUS83 KLBF 020121
SPSLBF

Special Weather Statement
National Weather Service North Platte NE
721 PM MDT Wed Sep 1 2021
 
NEZ004-094-020215-
Sheridan NE-Western Cherry NE-
721 PM MDT Wed Sep 1 2021

...A strong thunderstorm will impact portions of northwestern Cherry
and northeastern Sheridan Counties through 815 PM MDT...

At 721 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles southeast of Rushville, moving northeast at 20 mph.

HAZARD...Wind gusts of 50 to 55 mph and penny 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...
Gordon, Rushville, Clinton, Lone Butte, Irwin, Highway 27 crossing
the Niobrara River, Highway 250 crossing the Niobrara River, Shell
Lake State Wildlife Management Area, Bayonne and Intersection of
Highway 27 and Mills Road.

This includes the following highways...
 Highway 20 between mile markers 92 and 119, and between mile markers
126 and 128.
 Highway 250 between mile markers 37 and 48.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until midnight MDT for
the Panhandle of and north central Nebraska.

&&

LAT...LON 4248 10230 4256 10251 4293 10240 4294 10178
TIME...MOT...LOC 0121Z 206DEG 19KT 4259 10236 

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH

$$

CDC

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 1, 6:09 PM MDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	28 min
Sep 1, 6:38 PM MDT	Special Weather Statement	LBF	Sheridan	52 min
Sep 1, 7:48 PM MDT	Special Weather Statement	LBF	Hayes	42 min
Sep 1, 8:30 PM MDT	Special Weather Statement	LBF	Sheridan	45 min
Sep 1, 9:08 PM MDT	Special Weather Statement	LBF	Garden	52 min
Sep 1, 9:13 PM MDT	Special Weather Statement	LBF	Sheridan	47 min
Sep 1, 9:27 PM MDT	Special Weather Statement	LBF	Sheridan	33 min
Sep 1, 9:42 PM MDT	Special Weather Statement	LBF	Arthur	18 min
Sep 1, 9:46 PM MDT	Areal Flood Advisory	LBF	Cherry, Garden, Sheridan	3 hr
Sep 1, 9:55 PM MDT	Special Weather Statement	LBF	Sheridan	65 min
Sep 1, 9:59 PM MDT	Special Weather Statement	LBF	Arthur, Grant	61 min
Sep 1, 10:30 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Cherry, Sheridan	45 min
Sep 1, 10:42 PM MDT	Special Weather Statement	LBF	Arthur	18 min
Sep 1, 11:08 PM MDT	Areal Flood Advisory	LBF	Arthur, Deuel, Garden, Keith, Perkins	3 hr
Sep 1, 11:45 PM MDT	Special Weather Statement	LBF	Arthur	45 min
Sep 1, 11:59 PM MDT	Special Weather Statement	LBF	Logan	46 min
Sep 2, 3:58 PM MDT	Special Weather Statement	LBF	Valley	32 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.