Alert archive / Nebraska / Special Weather Statements in 2017

Special Weather Statement, NWS North Platte, NE

May 14, 2017Sheridan County, Nebraska

NWS North Platte, NE issued this special weather statement at May 14, 2017, 10:10 PM MDT for Sheridan County, Nebraska. It was in force for 50 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 14, 2017, 10:10 PM MDT (04:10 UTC)
Expired
May 14, 2017, 11:00 PM MDT
In force
50 min
Issued by
NWS North Platte, NE

County Sheridan County, NE

The radar

The North Platte radar (KLNX), 153 km from the middle of the area, began a volume at 04:11 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

Rapid City, SD (KRAP), launched 00:00Z, 4.2 hours before the alert went out and 173 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, Rapid City, SD at 00:00Z on 2017-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Rapid City, SD at 00:00Z on 2017-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2628 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 14, 5:22 PM MDT, 4 hours 48 minutes earlier.

Area forecast discussion, May 14, 5:22 PM MDT, 4 hours 48 minutes before
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Hazardous weather outlook, May 14, 2:26 PM MDT, 7 hours 44 minutes before
Hazardous Weather Outlook
National Weather Service North Platte NE
326 PM CDT Sun May 14 2017

NEZ004>010-022>029-035>038-056>059-069>071-094-152030-
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-
326 PM CDT Sun May 14 2017 /226 PM MDT Sun May 14 2017/

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

.DAY ONE...TONIGHT.

Scattered thunderstorms are possible late this evening across
Western Nebraska. Storm activity, if it develops, will spread east
through North Central Nebraska late tonight.

A strong or briefly severe storm is possible and this would most
likely across Western Nebraska late this evening North Central
Nebraska late tonight. Large hail and damaging winds are the
concern.

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

Thunderstorms are expected to develop Monday through Wednesday
night. The best chance will be during the late afternoon, evening
and overnight hours.

Isolated strong to briefly severe thunderstorms are possible Monday
and Tuesday. The area of concern Monday is all of Western and North
Central Nebraska. The area of concern Tuesday is along and east of
highway 83. Large hail and damaging winds are the main concerns with
any storms which reach severe limits both days.

Although the outlook for organized severe weather appears low at
this time, check later outlooks. The risk of severe weather could
increase in some areas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

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

In the hours before

Special weather statement, May 14, 9:35 PM MDT, 35 minutes before
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Local storm report, May 14, 10:04 PM MDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1104 PM CDT SUN MAY 14 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1055 PM     HAIL             HAY SPRINGS             42.68N 102.69W
05/14/2017  E0.50 INCH       SHERIDAN           NE   911 CALL CENTER

            UP TO DIME SIZE

&&

SNIVELY
Special weather statement, May 14, 10:10 PM MDT, 0 minutes before
Special Weather Statement
National Weather Service North Platte NE
1010 PM MDT SUN MAY 14 2017

NEZ004-094-150500-
Sheridan NE-Western Cherry NE-
1010 PM MDT SUN MAY 14 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL CHERRY AND CENTRAL
SHERIDAN COUNTIES UNTIL 1100 PM MDT...

At 1009 PM MDT, Doppler radar was tracking a strong thunderstorm near
Rushville, moving east at 45 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Gordon, Rushville, Clinton, Morgan Lake, Billys Lake, Lone Butte,
Irwin, Highway 27 crossing the Niobrara River, Smith Lake State
Wildlife Management Area, Intersection of Highway 20 and Irwin Road,
Highway 250 crossing the Niobrara River, Rock Hill, Bayonne and
Intersection of Highway 27 and Mills Road.

This includes the following highways...
 Highway 20 between mile markers 86 and 124.
 Highway 250 between mile markers 26 and 48.
 Highway 61 between mile markers 193 and 195.

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.

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.

&&

LAT...LON 4239 10247 4280 10260 4290 10190 4247 10169
TIME...MOT...LOC 0409Z 255DEG 38KT 4267 10243

JWS

The office that day

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

IssuedProductOfficeCountiesLasted
May 14, 9:35 PM MDTSpecial Weather StatementLBFSheridan40 min
May 14, 10:56 PM MDTSpecial Weather StatementLBFCherry49 min
May 14, 11:30 PM MDTSevere Thunderstorm WarningLBFSheridan45 min
May 14, 11:41 PM MDTSpecial Weather StatementLBFCherry49 min
May 15, 3:13 AM MDTSpecial Weather StatementLBFCherry47 min
May 15, 3:51 AM MDTSpecial Weather StatementLBFCherry39 min
May 15, 4:39 AM MDTSpecial Weather StatementLBFKeya Paha51 min
May 15, 5:19 AM MDTSpecial Weather StatementLBFKeya Paha41 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.