Alert archive / Nebraska / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 279, NWS North Platte, NE

August 31, 2018Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 31, 2018, 10:13 PM CDT for Lincoln County, Nebraska. It was in force for 36 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 31, 2018, 10:13 PM CDT (03:13 UTC)
Expired: Aug 31, 2018, 10:49 PM CDT
In force: 36 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Lincoln County, NE

The radar

The North Platte radar (KLNX), 137 km from the middle of the area, began a volume at 03:13 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.

What was reported inside it

Time	Report	Where	Remark
Aug 31, 10:15 PM CDT	TSTM WND DMG	5 S Wallace, NE	THUNDERSTORM WIND GUST ESTIMATED AT 60 MPH DROPED A LARGE TREE LIMB ON A HOUSE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 2 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.2 hours before the alert went out and 54 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1554 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 2614 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

748 
WUUS53 KLBF 010313
SVRLBF
NEC111-010400-
/O.NEW.KLBF.SV.W.0279.180901T0313Z-180901T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
1013 PM CDT FRI AUG 31 2018

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southwestern Lincoln County in southwestern Nebraska...

* Until 1100 PM CDT.

* At 1013 PM CDT, a severe thunderstorm was located near Wallace, or
  20 miles north of Hayes Center, moving east at 30 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Wallace, Dickens and Somerset. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4072 10125 4087 10125 4091 10078 4070 10076
TIME...MOT...LOC 0313Z 266DEG 27KT 4079 10115 

HAIL...1.50IN
WIND...60MPH
 
$$

Snively

2 follow-up statements

267 
WWUS53 KLBF 010330
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1030 PM CDT FRI AUG 31 2018

NEC111-010400-
/O.CON.KLBF.SV.W.0279.000000T0000Z-180901T0400Z/
Lincoln NE-
1030 PM CDT FRI AUG 31 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR SOUTHWESTERN LINCOLN COUNTY...

At 1030 PM CDT, a severe thunderstorm was located over Dickens, or 21
miles north of Hayes Center, moving east at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Wallace, Dickens and Somerset. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4076 10118 4087 10118 4091 10078 4070 10076
TIME...MOT...LOC 0330Z 264DEG 21KT 4082 10103 

HAIL...1.00IN
WIND...60MPH
 
$$

Snively

993 
WWUS53 KLBF 010349
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1049 PM CDT FRI AUG 31 2018

NEC111-010359-
/O.CAN.KLBF.SV.W.0279.000000T0000Z-180901T0400Z/
Lincoln NE-
1049 PM CDT FRI AUG 31 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LINCOLN COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.  However gusty winds are still possible with this
thunderstorm.

LAT...LON 4076 10118 4087 10118 4091 10078 4070 10076
TIME...MOT...LOC 0348Z 266DEG 27KT 4083 10084 

$$

Snively

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 31, 6:28 PM CDT, 3 hours 45 minutes earlier.

Area forecast discussion, Aug 31, 6:28 PM CDT, 3 hours 45 minutes before

Area Forecast Discussion
National Weather Service North Platte NE
628 PM CDT Fri Aug 31 2018

.SYNOPSIS...
Issued at 316 PM CDT Fri Aug 31 2018

The H5 pattern across the CONUS this morning had an
elongated area of high pressure which extended from North Carolina,
west into the Texas Panhandle and off the coast of Baja California.
North of this feature, broad west southwesterly flow extended from
northern California, east northeast to New England. A couple of
decent shortwave troughs were noted within this flow. The first
across the Pacific NW and a second over southern Saskatchewan.
Within the broad west southwesterly flow aloft, shortwaves were
noted over eastern Nebraska, southern Utah and central California.
At the surface, low pressure was located over central South Dakota.
A cold front had pushed into northwestern Nebraska and the west
central Panhandle of Nebraska this afternoon. south of the front,
temperatures had surged into the 90s while readings were in the
middle 70s in the northeastern Nebraska Panhandle.

&&

.SHORT TERM...(This evening through Saturday)
Issued at 316 PM CDT Fri Aug 31 2018

Tonight and Saturday...Precipitation chances will be
the main forecast concern over the next 24 hours. The northern
stream shortwave trough over southern Saskatchewan, will migrate east
into Manitoba this evening forcing the cold front through the
remainder of western and southwestern Nebraska by mid evening. At
the same time, the southern Utah shortwave (mentioned above) will
emerge onto the eastern plains of Colorado and swrn Nebraska by mid
evening. Thunderstorms should initiate INVOF the front in swrn
Nebraska early this evening, then migrate east northeast into
central and northeastern Nebraska overnight. Decent model agreement
was noted between the GFS and NAM12 solutions with their 12z
forecast runs as to the timing and position of storms tonight. The
HREF ensembles develop convection in swrn Nebraska early on with a
secondary batch across portions of central Nebraska by late evening.
That being said, will focus the highest pops tonight from
southwestern into eastern portions of the forecast area. For
Saturday, western and north central Nebraska will lie in a post
frontal environment with easterly, then southeasterly winds
developing by afternoon. Mainly dry conditions are expected,
however, skies will be partly to mostly cloudy, especially in
southwestern Nebraska. Highs will range from around 80 in the
southwest to the lower 80s elsewhere.

.LONG TERM...(Saturday night through Friday)
Issued at 316 PM CDT Fri Aug 31 2018

The shortwave trough, currently over the Pacific NW, will drop
south into the SWRN CONUS Saturday night into Sunday. A lead
disturbance will ride northeast into the central plains Saturday
night into Sunday. Showers and thunderstorms will develop INVOF
the front in northeastern Colorado and Swrn Nebraska late Saturday
night, riding northeast into central and northeastern Nebraska.
Though the severe threat will be minimal, some heavy rain will be
possible given forecast PWATS of better than 1.5 inches. Beyond
Sunday, high pressure will build into the east central and sern
CONUS. This will allow the swrn CONUS trough to remain in place
well into next week. The resultant weather pattern will be
highlighted by wetter and warmer than normal conditions across the
forecast area through next week.

&&

.AVIATION...(For the 00Z TAFS through 00Z Saturday evening)
Issued at 627 PM CDT Fri Aug 31 2018

VFR conditions are expected throughout the forecast period, however,
brief MVFR or IFR conditions will be possible with scattered showers
and thunderstorms around the area during the evening and early
overnight hours. Mid to high level cloud cover is expected to
continue through 14z Saturday with improving conditions in northern
Nebraska after 15z. Central Nebraska will remain under cloud
cover through 00z on Saturday with increasing chances of showers
and thunderstorms after 21z.

&&

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

SYNOPSIS...Buttler
SHORT TERM...Buttler
LONG TERM...Buttler
AVIATION...CDC/Thorne

Hazardous weather outlook, Aug 31, 3:20 PM CDT, 6 hours 53 minutes before

Hazardous Weather Outlook
National Weather Service North Platte NE
320 PM CDT Fri Aug 31 2018

NEZ004>010-022>029-035>038-056>059-069>071-094-012030-
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-
320 PM CDT Fri Aug 31 2018 /220 PM MDT Fri Aug 31 2018/

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

.DAY ONE...TONIGHT.

A marginal risk of severe weather is possible east of a line from
Imperial to Springview this evening. Large hail and damaging winds
will be the primary threats.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

A marginal risk for severe thunderstorms is possible south of a
line from Imperial to Brady on Saturday evening. Large hail,
damaging winds, and heavy rain will be possible.

The threat for thunderstorms will continue Sunday through Tuesday
night across north central Nebraska. At this time, the threat for
severe storms is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

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

kulik

In the hours before

Local storm report, Aug 31, 8:17 PM CDT, 1 hour 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
817 PM CDT FRI AUG 31 2018

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

0803 PM     HAIL             5 E LEMOYNE             41.29N 101.70W
08/31/2018  E1.00 INCH       KEITH              NE   TRAINED SPOTTER

            MOSTLY DIME SIZE BUT UP TO QUARTER SIZE HAIL.

&&

BLANCHETTE

Local storm report, Aug 31, 8:19 PM CDT, 1 hour 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
819 PM CDT FRI AUG 31 2018

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

0803 PM     TSTM WND GST     5 E LEMOYNE             41.29N 101.70W
08/31/2018  E60 MPH          KEITH              NE   TRAINED SPOTTER

&&

BLANCHETTE

Special weather statement, Aug 31, 8:34 PM CDT, 1 hour 39 minutes before

Special Weather Statement
National Weather Service North Platte NE
834 PM CDT FRI AUG 31 2018

NEZ024-035-036-057-059-010215-
Hooker NE-Arthur NE-McPherson NE-Lincoln NE-Keith NE-
834 PM CDT FRI AUG 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ARTHUR...EASTERN
KEITH...SOUTHWESTERN HOOKER...NORTHWESTERN LINCOLN AND WESTERN
MCPHERSON COUNTIES UNTIL 915 PM CDT/815 PM MDT/...

At 833 PM CDT/733 PM MDT/, Doppler radar was tracking strong
thunderstorms along a line extending from 16 miles southeast of
Arthur to 6 miles north of Sarben. Movement was northeast at 25 mph.

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

Locations impacted include...
Tryon, Sutherland, Paxton, Sarben, Keystone, Roscoe, Kingsley Dam,
Coker, Flatts, Big Lamunyon Flats, Nevens, Broganville, Big Bald
Hill, Bucktail Lake, Diamond Bar Lake, Bucktail and Schnick Lake.

This includes the following highways...
 Highway 61 between mile markers 93 and 113.
 Highway 92 near mile marker 138, and between mile markers 176 and
206.
 Highway 97 between mile markers 32 and 33.
 Interstate 80 in Nebraska between mile markers 131 and 158.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4108 10162 4139 10179 4175 10123 4155 10091
      4125 10098 4101 10127
TIME...MOT...LOC 0133Z 228DEG 30KT 4147 10139 4125 10129

Thorne

Special weather statement, Aug 31, 8:59 PM CDT, 1 hour 14 minutes before

Special Weather Statement
National Weather Service North Platte NE
759 PM MDT FRI AUG 31 2018

NEZ022-056>058-069-010245-
Deuel NE-Chase NE-Perkins NE-Garden NE-Keith NE-
759 PM MDT FRI AUG 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR PERKINS...KEITH...NORTHERN
CHASE...SOUTHEASTERN GARDEN AND EASTERN DEUEL COUNTIES UNTIL 845 PM
MDT...

At 759 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northwest of Lemoyne to 9 miles
southwest of Grant. Movement was northeast at 25 mph.

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

Locations impacted include...
Ogallala, Grant, Brule, Madrid, Venango, Lemoyne, Keystone, Roscoe,
Kingsley Dam, Eagle Gulch Campground, Ruthon, Clear Creek State
Wildlife Management Area, Brandon, Megeath, Otter Creek Campground,
Lake View Campground, Wild Horse Spring and Belmar.

This includes the following highways...
 Highway 61 between mile markers 48 and 109.
 Highway 92 between mile markers 119 and 138.
 Interstate 80 in Nebraska between mile markers 109 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4060 10205 4139 10206 4139 10161 4062 10147
TIME...MOT...LOC 0159Z 237DEG 21KT 4135 10190 4074 10184

Thorne

Special weather statement, Aug 31, 9:29 PM CDT, 44 minutes before

Special Weather Statement
National Weather Service North Platte NE
929 PM CDT FRI AUG 31 2018

NEZ025-036-037-059-010315-
McPherson NE-Thomas NE-Lincoln NE-Logan NE-
929 PM CDT FRI AUG 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN LINCOLN...LOGAN...
SOUTHEASTERN MCPHERSON AND SOUTHEASTERN THOMAS COUNTIES UNTIL 1015 PM
CDT...

At 929 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Ringgold, or 11 miles southeast of Tryon, moving
east at 30 mph.

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

Locations impacted include...
Stapleton, Tryon, Gandy, Ringgold, Tarboz Lake, Shanklin Bluff,
Hoagland and Brown Lake.

This includes the following highways...
 Highway 92 between mile markers 200 and 244.
 Highway 97 between mile markers 7 and 33.
 Highway 83 between mile markers 99 and 129.

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.

&&

LAT...LON 4119 10118 4136 10120 4146 10115 4150 10111
      4169 10081 4174 10043 4139 10026
TIME...MOT...LOC 0229Z 252DEG 28KT 4142 10083

Thorne

Special weather statement, Aug 31, 9:41 PM CDT, 32 minutes before

Special Weather Statement
National Weather Service North Platte NE
941 PM CDT FRI AUG 31 2018

NEZ057>059-010330-
Perkins NE-Lincoln NE-Keith NE-
941 PM CDT FRI AUG 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN PERKINS...SOUTHEASTERN
KEITH AND SOUTHWESTERN LINCOLN COUNTIES UNTIL 1030 PM CDT/930 PM
MDT/...

At 941 PM CDT/841 PM MDT/, Doppler radar was tracking strong
thunderstorms along a line extending from near Roscoe to 6 miles
northeast of Madrid to 7 miles southwest of Elsie. Movement was
northeast at 30 mph.

Dime size hail and wind gusts of 50 to 55 mph will be possible with
these storms.

Locations impacted include...
Paxton, Wallace, Madrid, Elsie, Sarben, Roscoe and Grainton.

This includes the following highways...
 Highway 61 between mile markers 84 and 86.
 Interstate 80 in Nebraska between mile markers 130 and 153.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4120 10135 4108 10111 4072 10108 4070 10153
      4091 10156 4110 10174
TIME...MOT...LOC 0241Z 244DEG 27KT 4108 10161 4094 10149 4076 10148

Thorne

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 31, 7:18 PM CDT	Special Weather Statement	LBF	Custer	27 min
Aug 31, 7:39 PM CDT	Special Weather Statement	LBF	Custer	51 min
Aug 31, 7:45 PM CDT	Special Weather Statement	LBF	Keith	45 min
Aug 31, 7:54 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	51 min
Aug 31, 8:34 PM CDT	Special Weather Statement	LBF	Keith, McPherson	41 min
Aug 31, 8:51 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, McPherson	39 min
Aug 31, 8:59 PM CDT	Special Weather Statement	LBF	Keith, Perkins	46 min
Aug 31, 9:29 PM CDT	Special Weather Statement	LBF	Logan	46 min
Aug 31, 9:41 PM CDT	Special Weather Statement	LBF	Perkins	49 min
Aug 31, 10:37 PM CDT	Special Weather Statement	LBF	Lincoln	38 min
Aug 31, 11:36 PM CDT	Special Weather Statement	LBF	Frontier	39 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2018 Every severe thunderstorm warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.