Alert archive / Nebraska / Special Weather Statements in 2019

Special Weather Statement, NWS North Platte, NE

August 4, 2019Sheridan County, Nebraska

NWS North Platte, NE issued this special weather statement at Aug 4, 2019, 3:47 PM MDT for Sheridan County, Nebraska. It was in force for 43 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 4, 2019, 3:47 PM MDT (21:47 UTC)
Expired
Aug 4, 2019, 4:30 PM MDT
In force
43 min
Issued by
NWS North Platte, NE

County Sheridan County, NE

The radar

The North Platte radar (KLNX), 127 km from the middle of the area, began a volume at 21:47 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 (KUNR), launched 12:00Z, 9.8 hours before the alert went out and 201 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 12:00Z on 2019-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 286 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, Rapid City, SD at 12:00Z on 2019-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.19395878Sfc1 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
286 J/kg
Mixed-layer CIN
-291 J/kg
Mixed-layer LCL
2343 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
4 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 Aug 4, 3:06 PM MDT, 41 minutes earlier.

Area forecast discussion, Aug 4, 3:06 PM MDT, 41 minutes before
Area Forecast Discussion
National Weather Service North Platte NE
406 PM CDT Sun Aug 4 2019

.SHORT TERM...(This evening through Monday night)
Issued at 352 PM CDT Sun Aug 4 2019

The main concern this forecast period is thunderstorm development
this afternoon and evening. Thunderstorms will continue to
develop across northwest Nebraska this afternoon. There is some
inconsistencies with the models in how far eastward the
thunderstorms will sustain themselves. Leaned more with HRRR and
HREF where storms will form into a cluster across northern
Nebraska and drop southeastward but should enter a less favorable
environment and will begin to diminish before reaching portions
of southwest and central Nebraska.

Storms that occur late this afternoon and evening have the
potential to become strong to severe, with the main hazards being
strong winds, large hail and heavy rain potential. The best chance
for severe thunderstorms will be across northwestern Nebraska,
mainly along and west of a line from Kilgore to Ellsworth.

A cold front will push through the area on Monday. There is a
chance of thunderstorms Monday afternoon and evening in
association with the cold front. At this time the severe threat
looks to be marginal as storms may develop behind the cold front
in a less favorable environment for severe storms but with the
amount of moister in the area could have the potential for heavy
rainfall.

.LONG TERM...(Tuesday through Sunday)
Issued at 352 PM CDT Sun Aug 4 2019

Surface high pressure will sit over the Central Plains Tuesday
into Wednesday before a frontal boundary moves through the area
Wednesday evening. Highs will remain seasonal in the 80s, with
slight chances of thunderstorms on Tuesday afternoon and evening.
A better chance of widespread thunderstorms will be Wednesday
afternoon in association with the cold front. Cooler temperatures
on Thursday and Friday with highs only in the upper 70s to low
80s. There will be a chance of thunderstorms Thursday through
Sunday.

&&

.AVIATION...(For the 18Z TAFS through 18Z Monday afternoon)
Issued at 1229 PM CDT Sun Aug 4 2019

VFR conditions forecast at the KLBF and KVTN terminals through 18Z
Monday. There will be scattered thunderstorms late this afternoon
across the northwest Sandhills. The thunderstorms to move
southeast with coverage to diminish late evening and overnight.
Included VCTS at KVTN from 00Z until 04Z. At KLBF, VCSH after 05Z.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...
None.
&&

SHORT TERM...Gomez
LONG TERM...Gomez
AVIATION...Roberg
Hazardous weather outlook, Aug 4, 2:40 PM MDT, 1 hour 7 minutes before
Hazardous Weather Outlook
National Weather Service North Platte NE
340 PM CDT Sun Aug 4 2019

NEZ004>010-022>029-035>038-056>059-069>071-094-052045-
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-
340 PM CDT Sun Aug 4 2019 /240 PM MDT Sun Aug 4 2019/

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

.DAY ONE...TONIGHT.

Scattered thunderstorms across the northwest Sandhills, mainly
northwest of a line from Valentine through Thedford and Ellsworth
will be capable of producing large hail, strong wind gusts and
heavy rainfall this evening. Thunderstorms will track further
southeastward this evening into the Sandhills and portions of
southwest Nebraska and may produce small hail, gusty winds and
brief heavy rain.

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

Additional scattered thunderstorms will move southeast across the
area Monday afternoon and evening. A few of these could be
severe.

An active pattern will bring chances for thunderstorms through
much of the week Tuesday through Saturday. Later forecasts will
determine any severe threats.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight.

&&

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

Roberg

In the hours before

Special weather statement, Aug 4, 1:09 PM MDT, 2 hours 38 minutes before
Special Weather Statement
National Weather Service North Platte NE
109 PM MDT Sun Aug 4 2019

NEZ004-094-042000-
Sheridan NE-Western Cherry NE-
109 PM MDT Sun Aug 4 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHERRY AND
NORTHEASTERN SHERIDAN COUNTIES UNTIL 200 PM MDT...

At 109 PM MDT, Doppler radar was tracking a strong thunderstorm 8
miles south of Batesland, or 14 miles north of Gordon, moving
southeast at 10 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Irwin, Hoover Lake and Shell Lake State Wildlife Management Area.

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 4300 10192 4293 10179 4282 10207 4300 10228
TIME...MOT...LOC 1909Z 297DEG 10KT 4301 10214

Roberg
Special weather statement, Aug 4, 2:12 PM MDT, 1 hour 35 minutes before
Special Weather Statement
National Weather Service North Platte NE
212 PM MDT Sun Aug 4 2019

NEZ004-094-042100-
Sheridan NE-Western Cherry NE-
212 PM MDT Sun Aug 4 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHERRY AND
NORTHEASTERN SHERIDAN COUNTIES UNTIL 300 PM MDT...

At 212 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Gordon to 29 miles southwest of Medicine
Lake. Movement was east at 15 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Gordon, Highway 61 crossing the Snake River, Round Lake, Morgan Lake,
Irwin, Intersection of Highway 20 and Irwin Road, Shell Lake State
Wildlife Management Area, Rock Hill, Bayonne and Intersection of
Highway 27 and Mills Road.

This includes the following highways...
 Highway 20 between mile markers 103 and 126.
 Highway 61 between mile markers 191 and 206.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4297 10193 4243 10156 4245 10206 4295 10237
TIME...MOT...LOC 2012Z 262DEG 14KT 4287 10220 4250 10193

Roberg
Special weather statement, Aug 4, 2:21 PM MDT, 1 hour 26 minutes before
Special Weather Statement
National Weather Service North Platte NE
221 PM MDT Sun Aug 4 2019

NEZ004-042100-
Sheridan NE-
221 PM MDT Sun Aug 4 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SHERIDAN COUNTY
UNTIL 300 PM MDT...

At 221 PM MDT, Doppler radar was tracking a strong thunderstorm over
Hay Springs, moving east at 15 mph.

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

Locations impacted include...
Rushville, Hay Springs, Intersection of Beaver Creek Road and White
Clay Creek Road, Highway 250 crossing the Niobrara River,
Intersection of Highway 87 and Antelope Road and Walgren Lake State
Recreation Area.

This includes the following highways...
 Highway 20 between mile markers 74 and 91.
 Highway 250 between mile markers 31 and 46.

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 4289 10250 4246 10241 4252 10277 4277 10278
      4278 10277 4279 10279 4281 10279
TIME...MOT...LOC 2021Z 260DEG 13KT 4269 10267

Roberg
Special weather statement, Aug 4, 3:07 PM MDT, 40 minutes before
Special Weather Statement
National Weather Service North Platte NE
307 PM MDT Sun Aug 4 2019

NEZ094-042145-
Western Cherry NE-
307 PM MDT Sun Aug 4 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CHERRY COUNTY UNTIL
345 PM MDT...

At 307 PM MDT, Doppler radar was tracking a strong thunderstorm 26
miles southwest of Medicine Lake, or 33 miles southeast of Gordon,
moving east at 15 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Highway 61 crossing the Snake River, Round Lake, Intersection of
Highway 61 and Survey Valley Road and Morgan Lake.

This includes Highway 61 between mile markers 183 and 201.

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 4240 10192 4259 10201 4258 10153 4228 10157
TIME...MOT...LOC 2107Z 283DEG 13KT 4244 10177

Roberg
Special weather statement, Aug 4, 3:47 PM MDT, 0 minutes before
Special Weather Statement
National Weather Service North Platte NE
347 PM MDT Sun Aug 4 2019

NEZ004-094-042230-
Sheridan NE-Western Cherry NE-
347 PM MDT Sun Aug 4 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CHERRY AND EAST
CENTRAL SHERIDAN COUNTIES UNTIL 430 PM MDT...

At 347 PM MDT, Doppler radar was tracking a strong thunderstorm 21
miles southeast of Rushville, moving east at 30 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Whitman Road crossing the North Branch of the Middle Loup River,
Round Lake, Big Hill, Intersection of Highway 61 and Survey Valley
Road, Billys Lake and Morgan Lake.

This includes Highway 61 between mile markers 176 and 193.

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.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of and north central Nebraska.

LAT...LON 4236 10237 4253 10232 4247 10153 4217 10147
TIME...MOT...LOC 2147Z 286DEG 24KT 4243 10226

Roberg

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 1:52 PM MDTSevere Thunderstorm WarningLBFCherry33 min
Aug 4, 2:12 PM MDTSpecial Weather StatementLBFSheridan48 min
Aug 4, 2:21 PM MDTSpecial Weather StatementLBFSheridan39 min
Aug 4, 3:07 PM MDTSpecial Weather StatementLBFSheridan38 min
Aug 4, 4:22 PM MDTSpecial Weather StatementLBFHooker38 min
Aug 4, 4:40 PM MDTSpecial Weather StatementLBFCherry50 min
Aug 4, 4:54 PM MDTSpecial Weather StatementLBFGrant, Hooker51 min
Aug 4, 5:06 PM MDTSevere Thunderstorm WarningLBFCherry39 min
Aug 4, 5:45 PM MDTSpecial Weather StatementLBFKeya Paha45 min
Aug 4, 5:47 PM MDTSpecial Weather StatementLBFArthur, Grant43 min

Nearby

Special Weather Statements in Nebraska, 2019Every special weather statement in 2019

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.