Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS North Platte, NE

August 19, 2021Chase County, Nebraska

NWS North Platte, NE issued this special weather statement at Aug 19, 2021, 10:32 PM MDT for Chase County, Nebraska. It was in force for 43 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, 10:32 PM MDT (04:32 UTC)
Expired: Aug 19, 2021, 11:15 PM MDT
In force: 43 min
Issued by: NWS North Platte, NE
Hail: 0.88 in
Wind: 40

County Chase County, NE

The radar

The Goodland radar (KGLD), 132 km from the middle of the area, began a volume at 04:35 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 113 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.

125 
WWUS83 KLBF 200432
SPSLBF

Special Weather Statement
National Weather Service North Platte NE
1032 PM MDT Thu Aug 19 2021
 
NEZ069-200515-
Chase NE-
1032 PM MDT Thu Aug 19 2021

...Strong thunderstorms will impact portions of southwestern Perkins,
Chase and western Hayes Counties through 1115 PM MDT...

At 1031 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Enders to near Champion to 12 miles south
of Lamar. Movement was north at 25 mph.

HAZARD...Winds in excess of 40 mph and nickel 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, Wauneta, Lamar, Enders, Enders Reservoir State Recreation
Area, Champion, Crete, Chase, Center Dam Campground, Wanamaker State
Wildfire Management Area, Area A Campground and Church Grove
Campground.

This includes Highway 61 between mile markers 25 and 53.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

A Tornado Watch remains in effect until 1100 PM MDT for southwestern
Nebraska.

&&

LAT...LON 4070 10205 4070 10135 4051 10134 4035 10138
      4035 10205
TIME...MOT...LOC 0431Z 187DEG 21KT 4043 10147 4042 10173 4039 10197 

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 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, 6:02 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Perkins	43 min
Aug 19, 6:13 PM MDT	Flash Flood Warning	LBF	Keith	3 hr
Aug 19, 6:32 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	43 min
Aug 19, 6:42 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	48 min
Aug 19, 6:50 PM MDT	Areal Flood Advisory	LBF	Arthur	2 hr
Aug 19, 6:59 PM MDT	Areal Flood Advisory	LBF	Chase, Perkins	2 hr
Aug 19, 7:13 PM MDT	Areal Flood Warning	LBF	Chase, Perkins	24 hr
Aug 19, 7:39 PM MDT	Areal Flood Advisory	LBF	Keith, Lincoln, Perkins	3 hr
Aug 19, 7:42 PM MDT	Special Weather Statement	LBF	Perkins	48 min
Aug 19, 8:14 PM MDT	Special Weather Statement	LBF	Chase	46 min
Aug 19, 8:17 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Hayes, Lincoln, Perkins	43 min
Aug 19, 8:28 PM MDT	Special Weather Statement	LBF	Lincoln	47 min
Aug 19, 8:40 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Frontier, Hayes, Lincoln, Perkins	50 min
Aug 19, 8:51 PM MDT	Areal Flood Advisory	LBF	Custer, Keith, Lincoln	4 hr
Aug 19, 8:56 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	49 min
Aug 19, 9:34 PM MDT	Special Weather Statement	LBF	Frontier, Hayes	41 min
Aug 19, 9:41 PM MDT	Special Weather Statement	LBF	Dawson	49 min
Aug 19, 10:22 PM MDT	Special Weather Statement	LBF	Custer	38 min
Aug 19, 10:28 PM MDT	Special Weather Statement	LBF	Frontier	47 min
Aug 19, 11:15 PM MDT	Special Weather Statement	LBF	Chase	45 min
Aug 19, 11:58 PM MDT	Special Weather Statement	LBF	Hayes	47 min
Aug 20, 12:39 AM MDT	Areal Flood Warning	LBF	Chase, Hayes	19 hr
Aug 20, 12:50 AM MDT	Areal Flood Advisory	LBF	Lincoln	2 hr
Aug 20, 12:56 AM MDT	Special Weather Statement	LBF	Lincoln	49 min
Aug 20, 2:12 AM MDT	Special Weather Statement	LBF	Custer	48 min
Aug 20, 9:35 AM MDT	River Flood Advisory	LBF	Hayes	10 hr
Aug 20, 1:40 PM MDT	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.