Alert archive / Nebraska / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 316, NWS North Platte, NE

August 16, 2020Frontier County, Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 16, 2020, 7:00 PM CDT for Frontier County, Lincoln County, Nebraska. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 16, 2020, 7:00 PM CDT (00:00 UTC)
Expired: Aug 16, 2020, 7:45 PM CDT
In force: 45 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Frontier County, NE, Lincoln County, NE

The radar

The North Platte radar (KLNX), 130 km from the middle of the area, began a volume at 00:02 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 16, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.0 hours before the alert went out and 248 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: 3 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 3874 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 16, 6:38 PM CDT, 22 minutes earlier.

Area forecast discussion, Aug 16, 6:38 PM CDT, 22 minutes before

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Hazardous weather outlook, Aug 16, 2:49 PM CDT, 4 hours 11 minutes before

Hazardous Weather Outlook
National Weather Service North Platte NE
249 PM CDT Sun Aug 16 2020

NEZ004>010-022>029-035>038-056>059-069>071-094-172000-
Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-
Grant-Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-
Logan-Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier-
Western Cherry-
249 PM CDT Sun Aug 16 2020 /149 PM MDT Sun Aug 16 2020/

This Hazardous Weather Outlook is for portions of western and
north central Nebraska.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A thunderstorm watch has been issued for southwest Nebraska and
the southern Sandhills. A slight risk for severe weather exist
for southwest Nebraska and the southeastern Sandhills, and a
marginal risk exist for areas southeast of a line from O'Neill to
Grant. Isolated storms will be possible this afternoon and
evening, with the main hazards being large hail and damaging
winds.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

An isolated thunderstorm cannot be ruled out the next several
days, however most areas will remain dry. No severe weather is
expected at this time.

.SPOTTER INFORMATION STATEMENT...

Please relay any information about observed severe weather or
impacts to the National Weather Service.

&&

Get your weather, hydrological, and climate information at
http://www.weather.gov/northplatte

In the hours before

Special weather statement, Aug 16, 4:28 PM CDT, 2 hours 32 minutes before

Special Weather Statement
National Weather Service North Platte NE
428 PM CDT Sun Aug 16 2020

NEZ070-162215-
Hayes NE-
428 PM CDT Sun Aug 16 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HAYES COUNTY UNTIL
515 PM CDT...

At 428 PM CDT, Doppler radar was tracking a strong thunderstorm near
Hayes Center, moving south at 20 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Hayes Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
southwestern Nebraska.

LAT...LON 4053 10111 4054 10088 4035 10084 4035 10112
      4036 10112
TIME...MOT...LOC 2128Z 356DEG 17KT 4047 10100

CDC

Special weather statement, Aug 16, 4:41 PM CDT, 2 hours 19 minutes before

Special Weather Statement
National Weather Service North Platte NE
441 PM CDT Sun Aug 16 2020

NEZ069-070-162215-
Chase NE-Hayes NE-
441 PM CDT Sun Aug 16 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CHASE AND
SOUTHWESTERN HAYES COUNTIES UNTIL 515 PM CDT/415 PM MDT/...

At 441 PM CDT/341 PM MDT/, Doppler radar was tracking a strong
thunderstorm near Wauneta, or 14 miles west of Hayes Center, moving
south at 15 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Wauneta and Hamlet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM CDT/800 PM
MDT/ for southwestern Nebraska.

LAT...LON 4036 10143 4051 10136 4051 10112 4035 10114
      4035 10136
TIME...MOT...LOC 2141Z 011DEG 13KT 4046 10128

CDC

Special weather statement, Aug 16, 4:43 PM CDT, 2 hours 17 minutes before

Special Weather Statement
National Weather Service North Platte NE
343 PM MDT Sun Aug 16 2020

NEZ069-162215-
Chase NE-
343 PM MDT Sun Aug 16 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL CHASE COUNTY UNTIL
415 PM MDT...

At 343 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Champion to near Enders Reservoir State
Recreation Area. Movement was southeast at 20 mph.

Nickel size hail will be possible with these storms.

Locations impacted include...
Enders Reservoir State Recreation Area, Champion, Center Dam
Campground, Area A Campground and Church Grove Campground.

This includes Highway 61 between mile markers 25 and 30.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 800 PM MDT for
southwestern Nebraska.

LAT...LON 4052 10186 4048 10158 4036 10142 4035 10184
TIME...MOT...LOC 2143Z 315DEG 16KT 4048 10178 4038 10154

CDC

Local storm report, Aug 16, 5:05 PM CDT, 1 hour 55 minutes before

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Special weather statement, Aug 16, 5:54 PM CDT, 1 hour 6 minutes before

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Special weather statement, Aug 16, 6:52 PM CDT, 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 6:00 PM CDT	Special Weather Statement	LBF	Sheridan	30 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2020 Every severe thunderstorm warning in 2020

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.