Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS North Platte, NE

April 6, 2021Cherry County, Nebraska

NWS North Platte, NE issued this special weather statement at Apr 6, 2021, 6:21 PM MDT for Cherry County, Nebraska. It was in force for 39 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: Apr 6, 2021, 6:21 PM MDT (00:21 UTC)
Expired: Apr 6, 2021, 7:00 PM MDT
In force: 39 min
Issued by: NWS North Platte, NE

County Cherry County, NE

The radar

The North Platte radar (KLNX), 46 km from the middle of the area, began a volume at 00:21 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, 0.4 hours before the alert went out and 138 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 670 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 173 m²/s²
0-3 km storm-relative helicity: 362 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

436 
WWUS83 KLBF 070021
SPSLBF

Special Weather Statement
National Weather Service North Platte NE
721 PM CDT Tue Apr 6 2021
 
NEZ005-024-025-094-070100-
Hooker NE-Eastern Cherry NE-Western Cherry NE-Thomas NE-
721 PM CDT Tue Apr 6 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CHERRY...
NORTHEASTERN HOOKER AND NORTHWESTERN THOMAS COUNTIES UNTIL 800 PM
CDT/700 PM MDT/...

At 720 PM CDT/620 PM MDT/, Doppler radar was tracking strong 
thunderstorms extending from Valentine National Wildlife Refuge to 
Seneca to near Mullen. Movement was northwest at 10 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Mullen, Thedford, Seneca, Brownlee, Valentine National Wildlife
Refuge, Highway 97 crossing the North Loup River, Speckel Meir Lake,
Marsh Flat, Norway, Giant Hill, Highway 97 crossing Big Creek,
Sevenmile Hill, Big Alkali Lake State Wildlife Management Area, Kelso
and Highway 83 crossing Goose Creek.

This includes the following highways...
 Highway 2 between mile markers 179 and 210.
 Highway 97 between mile markers 60 and 115.
 Highway 83 between mile markers 146 and 149, and between mile
markers 172 and 202.

LAT...LON 4276 10049 4242 10143 4193 10109 4195 10054
      4228 10058 4246 10022
TIME...MOT...LOC 0020Z 150DEG 9KT 4249 10037 4222 10090 4198 10101 

$$

Snively

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 6, 6:01 PM MDT	Special Weather Statement	LBF	Custer	29 min
Apr 6, 6:04 PM MDT	Special Weather Statement	LBF	McPherson	41 min
Apr 6, 6:23 PM MDT	Severe Thunderstorm Warning	LBF	Custer	37 min
Apr 6, 6:30 PM MDT	Special Weather Statement	LBF	Sherman	30 min
Apr 6, 6:30 PM MDT	Special Weather Statement	LBF	Logan, Thomas	45 min
Apr 6, 6:39 PM MDT	Special Weather Statement	LBF	Sherman	36 min
Apr 6, 6:43 PM MDT	Special Weather Statement	LBF	Thomas	47 min
Apr 6, 7:00 PM MDT	Special Weather Statement	LBF	Cherry	45 min
Apr 6, 7:01 PM MDT	Special Weather Statement	LBF	Custer	44 min
Apr 6, 7:23 PM MDT	Special Weather Statement	LBF	Logan, Thomas	52 min
Apr 6, 7:43 PM MDT	Special Weather Statement	LBF	Cherry	47 min
Apr 6, 8:13 PM MDT	Special Weather Statement	LBF	Blaine, Thomas	47 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.