Alert archive / Nebraska / Special Weather Statements in 2017

Special Weather Statement, NWS North Platte, NE

August 26, 2017Brown County, Nebraska

NWS North Platte, NE issued this special weather statement at Aug 26, 2017, 11:41 PM CDT for Brown County, Nebraska. It was in force for 49 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
Aug 26, 2017, 11:41 PM CDT (04:41 UTC)
Expired
Aug 27, 2017, 12:30 AM CDT
In force
49 min
Issued by
NWS North Platte, NE

County Brown County, NE

The radar

The North Platte radar (KLNX), 105 km from the middle of the area, began a volume at 04:42 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, 4.7 hours before the alert went out and 183 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 2017-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 557 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 2017-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
557 J/kg
Mixed-layer CIN
-125 J/kg
Mixed-layer LCL
2379 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

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 Aug 26, 8:21 PM CDT, 3 hours 20 minutes earlier.

Area forecast discussion, Aug 26, 8:21 PM CDT, 3 hours 20 minutes before
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Hazardous weather outlook, Aug 26, 8:27 PM CDT, 3 hours 14 minutes before
Hazardous Weather Outlook
National Weather Service North Platte NE
827 PM CDT Sat Aug 26 2017

NEZ004>010-022>029-035>038-056>059-069>071-094-280130-
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-
827 PM CDT Sat Aug 26 2017 /727 PM MDT Sat Aug 26 2017/

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

.DAY ONE...TONIGHT.

For the most part, the widespread severe weather potential has
ended for tonight. A few stronger storms are still possible late
Saturday night with gusty winds and small hail possible.

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

Afternoon and evening thunderstorms are possible Wednesday through
Saturday. At this time widespread severe weather is not
anticipated.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is no longer needed tonight.

&&

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

kulik

In the hours before

Special weather statement, Aug 26, 6:37 PM CDT, 5 hours 4 minutes before
Special Weather Statement
National Weather Service North Platte NE
537 PM MDT SAT AUG 26 2017

NEZ023-035-270015-
Grant NE-Arthur NE-
537 PM MDT SAT AUG 26 2017

...SPECIAL WEATHER STATEMENT...

At 536 PM MDT, Doppler radar was tracking a strong thunderstorm near
Hyannis, or 25 miles north of Arthur, moving southeast at 25 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Arthur, Hyannis, Green Lake, Lena, Sand Puddin Lake, Three Mile Lake,
Pratt Lake, Spring Valley Lake, Cogill Lake and Calora.

This includes the following highways...
 Highway 2 between mile markers 145 and 150.
 Highway 61 between mile markers 124 and 159.
 Highway 92 between mile markers 165 and 174.

A severe thunderstorm watch remains in effect until 1000 PM MDT for
west central Nebraska.

LAT...LON 4195 10191 4204 10170 4171 10140 4163 10141
      4152 10167
TIME...MOT...LOC 2336Z 332DEG 23KT 4193 10176

Power
Local storm report, Aug 26, 7:36 PM CDT, 4 hours 5 minutes before
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Special weather statement, Aug 26, 8:51 PM CDT, 2 hours 50 minutes before
Special Weather Statement
National Weather Service North Platte NE
851 PM CDT SAT AUG 26 2017

NEZ005-006-270230-
Eastern Cherry NE-Keya Paha NE-
851 PM CDT SAT AUG 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CHERRY...
NORTHWESTERN BROWN AND NORTHWESTERN KEYA PAHA COUNTIES UNTIL 930 PM
CDT...

At 850 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Littleburg, or 12 miles northeast of Valentine,
moving east at 25 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Norden, Sparks and Smith Falls State Park.

This includes Highway 12 between mile markers 10 and 30.

LAT...LON 4280 10010 4281 10014 4283 10015 4284 10020
      4282 10020 4296 10046 4300 10046 4299 9995
TIME...MOT...LOC 0150Z 288DEG 22KT 4298 10034

Kulik
Special weather statement, Aug 26, 10:50 PM CDT, 51 minutes before
Special Weather Statement
National Weather Service North Platte NE
1050 PM CDT SAT AUG 26 2017

NEZ005-006-008-270445-
Brown NE-Eastern Cherry NE-Keya Paha NE-
1050 PM CDT SAT AUG 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CHERRY...
NORTHWESTERN BROWN AND WESTERN KEYA PAHA COUNTIES UNTIL 1145 PM
CDT...

At 1049 PM CDT, Doppler radar was tracking a strong thunderstorm near
Keyapaha, or 21 miles northeast of Valentine, moving southeast at 45
mph.

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

Locations impacted include...
Springview, Norden, Thomas Creek State Wildlife Management Area,
Smith Falls State Park, Bobcat State Wildlife Management Area,
Meadville, North River Trail and Sparks.

This includes the following highways...
 Highway 183 between mile markers 208 and 225.
 Highway 12 between mile markers 13 and 58.

LAT...LON 4284 9948 4259 10011 4300 10042 4300 9977
TIME...MOT...LOC 0349Z 316DEG 40KT 4311 10026

Kulik
Special weather statement, Aug 26, 11:33 PM CDT, 8 minutes before
Special Weather Statement
National Weather Service North Platte NE
1033 PM MDT SAT AUG 26 2017

NEZ004-094-270515-
Sheridan NE-Western Cherry NE-
1033 PM MDT SAT AUG 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHERRY AND
NORTHEASTERN SHERIDAN COUNTIES UNTIL 1115 PM MDT...

At 1033 PM MDT, Doppler radar was tracking a strong thunderstorm 11
miles north of Gordon, moving southeast at 25 mph.

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

Locations impacted include...
Hoover Lake, Irwin, Intersection of Highway 20 and Irwin Road, Shell
Lake State Wildlife Management Area, Rock Hill and Bayonne.

This includes the following highways...
 Highway 20 between mile markers 109 and 126.
 Highway 61 near mile marker 214.

LAT...LON 4276 10170 4268 10209 4300 10223 4300 10204
TIME...MOT...LOC 0433Z 314DEG 23KT 4296 10212

Snively
Special weather statement, Aug 26, 11:41 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service North Platte NE
1141 PM CDT SAT AUG 26 2017

NEZ006-008-009-270530-
Brown NE-Rock NE-Keya Paha NE-
1141 PM CDT SAT AUG 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN CHERRY...NORTHERN ROCK...
CENTRAL BROWN AND SOUTHEASTERN KEYA PAHA COUNTIES UNTIL 1230 AM
CDT...

At 1140 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northeast of Springview to 7 miles
north of Ainsworth to near Johnstown. Movement was southeast at 45
mph.

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

Locations impacted include...
Ainsworth, Bassett, Long Pine, Newport, Johnstown, Hofeld Lake,
Keller Park State Recreation Area, Thomas Creek State Wildlife
Management Area, Mariaville, Pine Glen State Wildlife Refuge and
Antelope Peak.

This includes the following highways...
 Highway 183 between mile markers 172 and 212.
 Highway 20 between mile markers 227 and 269.

LAT...LON 4276 9924 4272 9924 4243 9947 4230 10007
      4253 10019 4258 10018 4268 9994 4291 9960
TIME...MOT...LOC 0440Z 293DEG 38KT 4287 9964 4265 9991 4261 10013

Kulik

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 7:01 PM CDTSevere Thunderstorm WarningLBFCherry, Hooker44 min
Aug 26, 7:17 PM CDTSevere Thunderstorm WarningLBFGarden, Sheridan29 min
Aug 26, 8:51 PM CDTSpecial Weather StatementLBFKeya Paha39 min
Aug 26, 10:50 PM CDTSpecial Weather StatementLBFKeya Paha55 min
Aug 27, 12:30 AM CDTSpecial Weather StatementLBFCherry45 min
Aug 27, 12:36 AM CDTSpecial Weather StatementLBFBrown39 min
Aug 27, 12:57 AM CDTSevere Thunderstorm WarningLBFBlaine, Brown48 min
Aug 27, 1:11 AM CDTSpecial Weather StatementLBFCherry49 min
Aug 27, 1:36 AM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Loup54 min
Aug 27, 1:46 AM CDTSpecial Weather StatementLBFHooker, Thomas44 min
Aug 27, 2:01 AM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Hooker, Logan, McPherson, Thomas44 min
Aug 27, 3:23 AM CDTSpecial Weather StatementLBFCuster52 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.