Alert archive / Nebraska / Special Weather Statements in 2017

Special Weather Statement, NWS North Platte, NE

July 10, 2017Holt County, Nebraska

NWS North Platte, NE issued this special weather statement at Jul 10, 2017, 11:35 PM CDT for Holt County, Nebraska. It was in force for 40 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
Jul 10, 2017, 11:35 PM CDT (04:35 UTC)
Expired
Jul 11, 2017, 12:15 AM CDT
In force
40 min
Issued by
NWS North Platte, NE

County Holt County, NE

The radar

The North Platte radar (KLNX), 135 km from the middle of the area, began a volume at 04:37 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, 4.6 hours before the alert went out and 181 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 2017-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2186 joules per kilogram.LCLLFCEL10008507005003002001001 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 2017-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.1939Sfc1 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
2186 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
2008 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
292 m²/s²
Significant tornado parameter
0.0
Supercell composite
12.4

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 Jul 10, 11:35 PM CDT, 0 minutes earlier.

Area forecast discussion, Jul 10, 11:35 PM CDT, 0 minutes before
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Hazardous weather outlook, Jul 10, 5:01 PM CDT, 6 hours 34 minutes before
Hazardous Weather Outlook
National Weather Service North Platte NE
501 PM CDT Mon Jul 10 2017

NEZ004>010-022>029-035>038-056>059-069>071-094-112215-
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-
501 PM CDT Mon Jul 10 2017 /401 PM MDT Mon Jul 10 2017/

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

.DAY ONE...TONIGHT.

As a warm front slowly lifts north across southwest Nebraska
tonight. There is some potential for stronger, organized
thunderstorm activity along and north of the front this evening.
The area of concern is near and north of a line from Grant through
Curtis. The main concerns will be strong thunderstorm wind gusts
of 50 mph or greater, and hail up to nickel size.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

The next chance for organized thunderstorms will arrive Wednesday
and Wednesday night. For Thursday and beyond, an upper level
ridge will build across the region, with only isolated
thunderstorms possible, mainly during the late afternoon and
evening hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

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

Taylor

In the hours before

Special weather statement, Jul 10, 9:54 PM CDT, 1 hour 41 minutes before
Special Weather Statement
National Weather Service North Platte NE
954 PM CDT MON JUL 10 2017

NEZ035-036-110345-
Arthur-McPherson-
954 PM CDT MON JUL 10 2017

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN ARTHUR...
NORTHEASTERN KEITH...SOUTHERN HOOKER AND WESTERN MCPHERSON
COUNTIES...

At 954 PM CDT/854 PM MDT/, strong thunderstorms were clustered 11
miles southeast of Arthur, moving northeast at 40 mph.

Wind gusts up to 50 mph and pea size hail are possible with this
storm.

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

This includes Highway 92 between mile markers 174 and 201.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4175 10113 4174 10111 4152 10098 4139 10145
      4140 10159 4153 10166
TIME...MOT...LOC 0254Z 245DEG 33KT 4149 10151

ET
Special weather statement, Jul 10, 10:28 PM CDT, 1 hour 7 minutes before
Special Weather Statement
National Weather Service North Platte NE
1028 PM CDT MON JUL 10 2017

NEZ036-057-059-110415-
McPherson NE-Lincoln NE-Keith NE-
1028 PM CDT MON JUL 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN KEITH...NORTHWESTERN
LINCOLN AND SOUTH CENTRAL MCPHERSON COUNTIES UNTIL 1115 PM CDT/1015
PM MDT/...

At 1026 PM CDT/926 PM MDT/, Doppler radar was tracking a strong
thunderstorm near Sarben, or 25 miles east of Ogallala, moving east
at 30 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Sutherland, Paxton, Sarben, Coker, Big Bald Hill and Nevens.

This includes Highway 97 between mile markers 2 and 18.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

If on or near Sutherland Reservoir, get out of the water and move
indoors or inside a vehicle. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.

&&

LAT...LON 4111 10146 4132 10152 4146 10090 4121 10077
TIME...MOT...LOC 0326Z 253DEG 26KT 4125 10127

Snively
Special weather statement, Jul 10, 10:35 PM CDT, 1 hour before
Special Weather Statement
National Weather Service North Platte NE
1035 PM CDT MON JUL 10 2017

NEZ024-025-036-037-110415-
Hooker NE-McPherson NE-Thomas NE-Logan NE-
1035 PM CDT MON JUL 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HOOKER...
NORTHWESTERN LOGAN...NORTHEASTERN MCPHERSON AND SOUTHWESTERN THOMAS
COUNTIES UNTIL 1115 PM CDT/1015 PM MDT/...

At 1035 PM CDT/935 PM MDT/, Doppler radar was tracking a strong
thunderstorm near Tryon, moving northeast at 40 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Tryon, Shimmons Lake and Highway 83 crossing The Dismal River.

This includes the following highways...
 Highway 92 between mile markers 197 and 206.
 Highway 97 between mile markers 32 and 48.
 Highway 83 between mile markers 124 and 132.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4194 10067 4166 10043 4150 10106 4171 10119
TIME...MOT...LOC 0335Z 246DEG 33KT 4162 10102

ET
Special weather statement, Jul 10, 10:51 PM CDT, 44 minutes before
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Special weather statement, Jul 10, 10:54 PM CDT, 41 minutes before
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Special weather statement, Jul 10, 11:35 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 8:02 PM CDTSpecial Weather StatementLBFDeuel43 min
Jul 10, 8:19 PM CDTSevere Thunderstorm WarningLBFDeuel, Garden41 min
Jul 10, 8:45 PM CDTSevere Thunderstorm WarningLBFDeuel, Garden45 min
Jul 10, 9:17 PM CDTSpecial Weather StatementLBFBlaine, Loup43 min
Jul 10, 9:22 PM CDTSpecial Weather StatementLBFArthur23 min
Jul 10, 9:38 PM CDTSpecial Weather StatementLBFKeith52 min
Jul 10, 9:54 PM CDTSpecial Weather StatementLBFGarfield, Loup, Wheeler51 min
Jul 10, 9:59 PM CDTSevere Thunderstorm WarningLBFArthur, McPherson46 min
Jul 10, 10:28 PM CDTSpecial Weather StatementLBFMcPherson47 min
Jul 10, 10:35 PM CDTSpecial Weather StatementLBFMcPherson40 min
Jul 10, 10:39 PM CDTSevere Thunderstorm WarningLBFWheeler25 min
Jul 10, 10:51 PM CDTSpecial Weather StatementLBFRock39 min
Jul 10, 10:54 PM CDTSpecial Weather StatementLBFGarfield, Wheeler51 min
Jul 11, 3:57 AM CDTHeat AdvisoryLBFChase, Custer, Frontier, Hayes, Lincoln16 hr
Jul 11, 6:25 PM CDTSpecial Weather StatementLBFHayes50 min

Nearby

Special Weather Statements in Nebraska, 2017Every special weather statement in 2017

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.