Alert archive / Nebraska / Special Weather Statements in 2020

Special Weather Statement, NWS North Platte, NE

June 27, 2020Blaine County, Nebraska

NWS North Platte, NE issued this special weather statement at Jun 27, 2020, 11:13 PM CDT for Blaine County, Nebraska. It was in force for 32 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
Jun 27, 2020, 11:13 PM CDT (04:13 UTC)
Expired
Jun 27, 2020, 11:45 PM CDT
In force
32 min
Issued by
NWS North Platte, NE

County Blaine County, NE

The radar

The North Platte radar (KLNX), 54 km from the middle of the area, began a volume at 04:16 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, 4.2 hours before the alert went out and 69 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2020-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1659 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2020-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1659 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
2362 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.1

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 Jun 27, 6:25 PM CDT, 4 hours 48 minutes earlier.

Area forecast discussion, Jun 27, 6:25 PM CDT, 4 hours 48 minutes before
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Hazardous weather outlook, Jun 27, 2:55 PM CDT, 8 hours 18 minutes before
Hazardous Weather Outlook
National Weather Service North Platte NE
255 PM CDT Sat Jun 27 2020

NEZ004>010-022>029-035>038-056>059-069>071-094-282000-
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-
255 PM CDT Sat Jun 27 2020 /155 PM MDT Sat Jun 27 2020/

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

.DAY ONE...TONIGHT.

There is a marginal risk of severe thunderstorms across much
western and north central Nebraska this evening. The hazard is
isolated severe storms capable of large hail and wind damage.

There is also a potential for heavy rainfall across portions of
north central and southwest Nebraska. The area of concern is
generally along and east of a line from Palisade to Paxton to
Mullen, including North Platte and Broken Bow. Slow moving
thunderstorms may produce 1 to 2 inches of rainfall in this area
which could lead to flooding.

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

An isolated severe thunderstorm is possible late Sunday afternoon
through early Sunday evening. The area of concern is generally
north of Interstate 80 and along and west of highway 61. The
hazard is large hail and wind damage.

Organized severe thunderstorm activity is expected late Tuesday
across much of western and north central Nebraska. Large hail and
wind damage are the hazards. Check later forecasts as the timing
and magnitude of the severe weather will become more certain.

Isolated, mainly late afternoon or evening thunderstorms are
possible Wednesday through Friday. The risk of severe weather is
low.

.SPOTTER INFORMATION STATEMENT...

Please relay any information about observed severe weather to the
NWS.

&&

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

In the hours before

Special weather statement, Jun 27, 7:15 PM CDT, 3 hours 58 minutes before
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Special weather statement, Jun 27, 7:30 PM CDT, 3 hours 43 minutes before
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Special weather statement, Jun 27, 7:43 PM CDT, 3 hours 30 minutes before
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Special weather statement, Jun 27, 8:12 PM CDT, 3 hours 1 minute before
Special Weather Statement
National Weather Service North Platte NE
812 PM CDT Sat Jun 27 2020

NEZ006-007-010-280145-
Holt NE-Keya Paha NE-Boyd NE-
812 PM CDT Sat Jun 27 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HOLT...NORTHEASTERN
KEYA PAHA AND WESTERN BOYD COUNTIES UNTIL 845 PM CDT...

At 812 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles southeast of Naper, or 15 miles west of Spencer, moving
northeast at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Butte, Naper, Dustin, Anoka, Brocksburg and Hull Lake State Wildlife
Management Area.

This includes Highway 12 between mile markers 81 and 116.

LAT...LON 4265 9897 4287 9937 4300 9930 4300 9875
TIME...MOT...LOC 0112Z 202DEG 26KT 4287 9900

Snively
Special weather statement, Jun 27, 8:17 PM CDT, 2 hours 56 minutes before
Special Weather Statement
National Weather Service North Platte NE
817 PM CDT Sat Jun 27 2020

NEZ035-036-057-059-280145-
Arthur NE-McPherson NE-Lincoln NE-Keith NE-
817 PM CDT Sat Jun 27 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ARTHUR...
NORTHEASTERN KEITH...NORTHWESTERN LINCOLN AND CENTRAL MCPHERSON
COUNTIES UNTIL 845 PM CDT/745 PM MDT/...

At 816 PM CDT/716 PM MDT/, Doppler radar was tracking a cluster of
strong thunderstorms 20 miles southwest of Tryon, moving northeast
at 25 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Tryon, Flatts, Big Lamunyon Flats, Diamond Bar Lake and Schnick Lake.

This includes the following highways...
 Highway 92 between mile markers 182 and 211.
 Highway 97 between mile markers 23 and 35.

LAT...LON 4119 10116 4138 10152 4173 10124 4155 10078
TIME...MOT...LOC 0116Z 212DEG 22KT 4143 10123

Snively
Special weather statement, Jun 27, 11:13 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service North Platte NE
1113 PM CDT Sat Jun 27 2020

NEZ038-280445-
Custer NE-
1113 PM CDT Sat Jun 27 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CUSTER COUNTY UNTIL
1145 PM CDT...

At 1113 PM CDT, Doppler radar was tracking a strong thunderstorm 12
miles south of Dunning, or 21 miles northeast of Stapleton, moving
east at 15 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

This storm will remain over mainly rural areas of northwestern Custer
and southeastern Blaine Counties.

This includes Highway 2 between mile markers 248 and 255.

LAT...LON 4156 10024 4173 10023 4174 9990 4155 9991
TIME...MOT...LOC 0413Z 261DEG 14KT 4165 10016

Snively

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 7:13 PM CDTSpecial Weather StatementLBFHayes47 min
Jun 27, 7:15 PM CDTSpecial Weather StatementLBFMcPherson30 min
Jun 27, 7:30 PM CDTSpecial Weather StatementLBFBoyd45 min
Jun 27, 7:43 PM CDTSpecial Weather StatementLBFMcPherson32 min
Jun 27, 8:12 PM CDTSpecial Weather StatementLBFBoyd33 min
Jun 27, 8:17 PM CDTSpecial Weather StatementLBFMcPherson28 min
Jun 27, 11:42 PM CDTSpecial Weather StatementLBFBlaine48 min
Jun 28, 12:34 AM CDTSpecial Weather StatementLBFLoup41 min
Jun 28, 1:48 AM CDTSpecial Weather StatementLBFBlaine42 min
Jun 28, 2:03 AM CDTSevere Thunderstorm WarningLBFCuster42 min
Jun 28, 2:40 AM CDTSpecial Weather StatementLBFValley50 min

Nearby

Special Weather Statements in Nebraska, 2020Every special weather statement 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.