Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS North Platte, NE

May 15, 2021Perkins County, Nebraska

NWS North Platte, NE issued this special weather statement at May 15, 2021, 6:03 PM MDT for Perkins County, Nebraska. It was in force for 42 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: May 15, 2021, 6:03 PM MDT (00:03 UTC)
Expired: May 15, 2021, 6:45 PM MDT
In force: 42 min
Issued by: NWS North Platte, NE

County Perkins County, NE

The radar

The North Platte radar (KLNX), 164 km from the middle of the area, began a volume at 00:05 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, 0.1 hours before the alert went out and 115 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: 266 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1597 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 15, 1:44 PM MDT, 4 hours 19 minutes earlier.

Area forecast discussion, May 15, 1:44 PM MDT, 4 hours 19 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, May 15, 2:08 PM MDT, 3 hours 55 minutes before

Hazardous Weather Outlook
National Weather Service North Platte NE
308 PM CDT Sat May 15 2021

NEZ004>010-022>029-035>038-056>059-069>071-094-162015-
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-
308 PM CDT Sat May 15 2021 /208 PM MDT Sat May 15 2021/

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

.DAY ONE...TONIGHT.

Thunderstorms are possible tonight. A few storms may be strong to
severe, with the greatest potential across southwest Nebraska.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

Additional thunderstorms are possible on Sunday across all of
western and north central Nebraska. At this time severe weather
threat looks low, but can't rule out and isolated strong to
severe thunderstorm.

Next week the weather pattern becomes more active with
thunderstorms possible daily throughout the week.

.SPOTTER INFORMATION STATEMENT...

Please report hail, strong winds, and heavy rain to the National
Weather Service.

&&

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

Roberg

In the hours before

Special weather statement, May 15, 5:54 PM MDT, 9 minutes before

Special Weather Statement
National Weather Service North Platte NE
554 PM MDT Sat May 15 2021

NEZ022-035-057-160045-
Arthur NE-Garden NE-Keith NE-
554 PM MDT Sat May 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ARTHUR...
NORTHWESTERN KEITH AND SOUTHEASTERN GARDEN COUNTIES UNTIL 645 PM
MDT...

At 553 PM MDT, Doppler radar was tracking a strong thunderstorm near
Lewellen, or 15 miles east of Oshkosh, moving northeast at 15 mph.

Nickel size hail and winds in excess of 30 mph will be possible with
this storm.

This storm will remain over mainly rural areas of southwestern
Arthur...northwestern Keith and southeastern Garden Counties,
including the following locations... Ruthon, Haythorn Lake, Belmar,
Clear Creek State Wildlife Management Area, McKeag and Otter Creek
Campground.

This includes the following highways...
 Highway 61 between mile markers 108 and 118.
 Highway 92 between mile markers 116 and 126.

LAT...LON 4125 10206 4141 10218 4162 10182 4139 10163
TIME...MOT...LOC 2353Z 238DEG 14KT 4137 10204

Taylor

Special weather statement, May 15, 6:01 PM MDT, 2 minutes before

Special Weather Statement
National Weather Service North Platte NE
601 PM MDT Sat May 15 2021

NEZ069-160045-
Chase NE-
601 PM MDT Sat May 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN CHASE COUNTY UNTIL 645 PM
MDT...

At 601 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles south of Lamar, or 19 miles southeast of Holyoke, moving
northeast at 15 mph.

Nickel size hail and winds in excess of 30 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Lamar around 640 PM MDT.

Other locations impacted by this storm include Crete and Chase.

LAT...LON 4037 10205 4053 10206 4069 10192 4051 10165
      4035 10191 4035 10202
TIME...MOT...LOC 0001Z 222DEG 11KT 4043 10200

Taylor

Special weather statement, May 15, 6:03 PM MDT, 0 minutes before

Special Weather Statement
National Weather Service North Platte NE
603 PM MDT Sat May 15 2021

NEZ058-160045-
Perkins NE-
603 PM MDT Sat May 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN PERKINS AND SOUTHWESTERN
KEITH COUNTIES UNTIL 645 PM MDT...

At 603 PM MDT, Doppler radar was tracking a strong thunderstorm near
Venango, or 14 miles west of Grant, moving northeast at 15 mph.

Nickel size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Venango, Brandon and Wild Horse Spring.

This includes Highway 61 between mile markers 69 and 78.

LAT...LON 4072 10199 4079 10206 4094 10206 4095 10205
      4101 10198 4100 10197 4100 10173 4091 10163
TIME...MOT...LOC 0003Z 228DEG 12KT 4085 10200

Taylor

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 6:01 PM MDT	Special Weather Statement	LBF	Chase	44 min
May 15, 6:31 PM MDT	Special Weather Statement	LBF	Lincoln	44 min
May 15, 6:42 PM MDT	Severe Thunderstorm Warning	LBF	Perkins	48 min
May 15, 6:48 PM MDT	Special Weather Statement	LBF	Arthur	42 min
May 15, 7:06 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	39 min
May 15, 7:13 PM MDT	Severe Thunderstorm Warning	LBF	Keith	47 min
May 15, 7:35 PM MDT	Special Weather Statement	LBF	Perkins	40 min
May 15, 7:44 PM MDT	Severe Thunderstorm Warning	LBF	Perkins	46 min
May 15, 8:06 PM MDT	Special Weather Statement	LBF	Lincoln	39 min
May 15, 8:07 PM MDT	Special Weather Statement	LBF	Custer	38 min
May 15, 8:23 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	52 min
May 15, 8:42 PM MDT	Special Weather Statement	LBF	Perkins	48 min
May 15, 9:56 PM MDT	Special Weather Statement	LBF	Perkins	49 min
May 15, 11:08 PM MDT	Special Weather Statement	LBF	Perkins	52 min
May 15, 11:21 PM MDT	Areal Flood Warning	LBF	Lincoln, Perkins	4 hr
May 16, 3:16 AM MDT	Areal Flood Advisory	LBF	Cherry, Grant, Hooker	3 hr
May 16, 3:38 AM MDT	Areal Flood Advisory	LBF	Sheridan	101 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.