Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS North Platte, NE

August 6, 2021Cherry County, Nebraska

NWS North Platte, NE issued this special weather statement at Aug 6, 2021, 7:33 PM MDT for Cherry County, Nebraska. It was in force for 42 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: Aug 6, 2021, 7:33 PM MDT (01:33 UTC)
Expired: Aug 6, 2021, 8:15 PM MDT
In force: 42 min
Issued by: NWS North Platte, NE
Hail: 0.00 in
Wind: 50

County Cherry County, NE

The radar

The North Platte radar (KLNX), 121 km from the middle of the area, began a volume at 01:36 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, 1.6 hours before the alert went out and 185 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: 624 J/kg
Mixed-layer CIN: -211 J/kg
Mixed-layer LCL: 2013 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

658 
WWUS83 KLBF 070133
SPSLBF

Special Weather Statement
National Weather Service North Platte NE
733 PM MDT Fri Aug 6 2021
 
NEZ094-070215-
Western Cherry NE-
733 PM MDT Fri Aug 6 2021

...A strong thunderstorm will impact portions of north central Cherry
County through 815 PM MDT...

At 732 PM MDT, Doppler radar was tracking a strong thunderstorm 11
miles southeast of Lacreek Wildlife Refuge, or 20 miles southeast of
Martin, moving northeast at 30 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Cody, Nenzel, Cody Lake and Eli. 

This includes the following highways...
 Highway 20 between mile markers 139 and 168.
 Highway 61 near mile marker 231.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4300 10092 4299 10091 4276 10147 4300 10173
TIME...MOT...LOC 0132Z 247DEG 28KT 4295 10147 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

$$

Roberg

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 6:03 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	42 min
Aug 6, 6:39 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	51 min
Aug 6, 8:40 PM MDT	Special Weather Statement	LBF	Hayes	50 min
Aug 6, 10:19 PM MDT	Special Weather Statement	LBF	Dawson	41 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.