Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS North Platte, NE

September 2, 2021Valley County, Nebraska

NWS North Platte, NE issued this special weather statement at Sep 2, 2021, 4:58 PM CDT for Valley County, Nebraska. It was in force for 32 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 2, 2021, 4:58 PM CDT (21:58 UTC)
Expired: Sep 2, 2021, 5:30 PM CDT
In force: 32 min
Issued by: NWS North Platte, NE
Hail: 0.50 in
Wind: 40

County Valley County, NE

The radar

The North Platte radar (KLNX), 114 km from the middle of the area, began a volume at 21:57 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 12:00Z, 10.0 hours before the alert went out and 112 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: 2 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 733 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 200 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

995 
WWUS83 KLBF 022158
SPSLBF

Special Weather Statement
National Weather Service North Platte NE
458 PM CDT Thu Sep 2 2021
 
NEZ038-022230-
Custer NE-
458 PM CDT Thu Sep 2 2021

...A strong thunderstorm will impact portions of northeastern Custer
County through 530 PM CDT...

At 457 PM CDT, Doppler radar was tracking a strong thunderstorm near
Weissert, or 16 miles northeast of Broken Bow, moving east at 30 mph.

HAZARD...Winds in excess of 40 mph and half inch 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...
Comstock, Weissert, Arcadia Diversion Dam State Wildlife Management
Area, Wescott and Big Oak Canyon.

This includes Highway 183 between mile markers 101 and 113.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4144 9948 4162 9947 4164 9921 4141 9921
      4141 9922
TIME...MOT...LOC 2157Z 273DEG 24KT 4153 9938 

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

$$

NMJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 1, 7:09 PM CDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	28 min
Sep 1, 7:38 PM CDT	Special Weather Statement	LBF	Sheridan	52 min
Sep 1, 8:21 PM CDT	Special Weather Statement	LBF	Sheridan	54 min
Sep 1, 8:48 PM CDT	Special Weather Statement	LBF	Hayes	42 min
Sep 1, 9:30 PM CDT	Special Weather Statement	LBF	Sheridan	45 min
Sep 1, 10:08 PM CDT	Special Weather Statement	LBF	Garden	52 min
Sep 1, 10:13 PM CDT	Special Weather Statement	LBF	Sheridan	47 min
Sep 1, 10:27 PM CDT	Special Weather Statement	LBF	Sheridan	33 min
Sep 1, 10:42 PM CDT	Special Weather Statement	LBF	Arthur	18 min
Sep 1, 10:46 PM CDT	Areal Flood Advisory	LBF	Cherry, Garden, Sheridan	3 hr
Sep 1, 10:55 PM CDT	Special Weather Statement	LBF	Sheridan	65 min
Sep 1, 10:59 PM CDT	Special Weather Statement	LBF	Arthur, Grant	61 min
Sep 1, 11:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Cherry, Sheridan	45 min
Sep 1, 11:42 PM CDT	Special Weather Statement	LBF	Arthur	18 min
Sep 2, 12:08 AM CDT	Areal Flood Advisory	LBF	Arthur, Deuel, Garden, Keith, Perkins	3 hr
Sep 2, 12:45 AM CDT	Special Weather Statement	LBF	Arthur	45 min
Sep 2, 12:59 AM CDT	Special Weather Statement	LBF	Logan	46 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.