Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS North Platte, NE

August 19, 2021Frontier County, Nebraska

NWS North Platte, NE issued this special weather statement at Aug 19, 2021, 11:28 PM CDT for Frontier County, Nebraska. It was in force for 47 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 19, 2021, 11:28 PM CDT (04:28 UTC)
Expired: Aug 20, 2021, 12:15 AM CDT
In force: 47 min
Issued by: NWS North Platte, NE
Hail: 0.00 in
Wind: 50

County Frontier County, NE

The radar

The Grand Island radar (KUEX), 159 km from the middle of the area, began a volume at 04:31 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, 4.5 hours before the alert went out and 70 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: 1368 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1220 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 208 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 10.2

Open this sounding in Storm Lab

The text

As transmitted.

048 
WWUS83 KLBF 200428
SPSLBF

Special Weather Statement
National Weather Service North Platte NE
1128 PM CDT Thu Aug 19 2021
 
NEZ071-200515-
Frontier NE-
1128 PM CDT Thu Aug 19 2021

...Strong thunderstorms will impact portions of Frontier County
through 1215 AM CDT...

At 1128 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Moorefield to near Curtis to 14 miles
north of Culbertson. Movement was southeast at 35 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...
Curtis, Eustis, Moorefield, Stockville, Medicine Creek Reservoir
State Recreation Area, Maywood, Quick, Willow View Campground,
Freedom, Orafino, Bluegill Haven Campground, Red Willow Reservoir
State Recreation Area and Dancing Leaf Earth Lodge.

This includes Highway 83 between mile markers 27 and 50.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

A Tornado Watch remains in effect until midnight CDT for southwestern
Nebraska.

&&

LAT...LON 4068 10075 4070 10000 4068 9998 4044 9998
      4044 10009 4035 10010 4035 10075
TIME...MOT...LOC 0428Z 315DEG 30KT 4071 10036 4057 10053 4042 10073 

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

$$

Taylor

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 7:02 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Perkins	43 min
Aug 19, 7:13 PM CDT	Flash Flood Warning	LBF	Keith	3 hr
Aug 19, 7:32 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	43 min
Aug 19, 7:42 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	48 min
Aug 19, 7:50 PM CDT	Areal Flood Advisory	LBF	Arthur	2 hr
Aug 19, 7:59 PM CDT	Areal Flood Advisory	LBF	Chase, Perkins	2 hr
Aug 19, 8:13 PM CDT	Areal Flood Warning	LBF	Chase, Perkins	24 hr
Aug 19, 8:39 PM CDT	Areal Flood Advisory	LBF	Keith, Lincoln, Perkins	3 hr
Aug 19, 8:42 PM CDT	Special Weather Statement	LBF	Perkins	48 min
Aug 19, 9:14 PM CDT	Special Weather Statement	LBF	Chase	46 min
Aug 19, 9:17 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Hayes, Lincoln, Perkins	43 min
Aug 19, 9:28 PM CDT	Special Weather Statement	LBF	Lincoln	47 min
Aug 19, 9:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Frontier, Hayes, Lincoln, Perkins	50 min
Aug 19, 9:51 PM CDT	Areal Flood Advisory	LBF	Custer, Keith, Lincoln	4 hr
Aug 19, 9:56 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	49 min
Aug 19, 10:34 PM CDT	Special Weather Statement	LBF	Frontier, Hayes	41 min
Aug 19, 10:41 PM CDT	Special Weather Statement	LBF	Dawson	49 min
Aug 19, 11:22 PM CDT	Special Weather Statement	LBF	Custer	38 min
Aug 19, 11:32 PM CDT	Special Weather Statement	LBF	Chase	43 min
Aug 20, 12:15 AM CDT	Special Weather Statement	LBF	Chase	45 min
Aug 20, 12:58 AM CDT	Special Weather Statement	LBF	Hayes	47 min
Aug 20, 1:39 AM CDT	Areal Flood Warning	LBF	Chase, Hayes	19 hr
Aug 20, 1:50 AM CDT	Areal Flood Advisory	LBF	Lincoln	2 hr
Aug 20, 1:56 AM CDT	Special Weather Statement	LBF	Lincoln	49 min
Aug 20, 3:12 AM CDT	Special Weather Statement	LBF	Custer	48 min
Aug 20, 10:35 AM CDT	River Flood Advisory	LBF	Hayes	10 hr
Aug 20, 2:40 PM CDT	River Flood Advisory	LBF	Lincoln	24 hr

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.