Alert archive / Nebraska / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 32, NWS North Platte, NE

May 10, 2018Keith County, Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 10, 2018, 6:00 PM MDT for Keith County, Perkins County, Nebraska. It was in force for 45 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: May 10, 2018, 6:00 PM MDT (00:00 UTC)
Expired: May 10, 2018, 6:45 PM MDT
In force: 45 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

Counties Keith County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 148 km from the middle of the area, began a volume at 00:05 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
May 10, 6:40 PM MDT	HAIL 1	6 S Ogallala, NE	ESTIMATED TIME OF 640PM MDT OR 740PM CDT. HAD QUARTER SIZE HAIL AND LOTS OF MARBLE SIZE HAIL.

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 40 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 10, 1:41 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.0 hours before the alert went out and 103 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: 1050 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 1982 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 446 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.2

Open this sounding in Storm Lab

The text

As transmitted.

212 
WUUS53 KLBF 110000
SVRLBF
NEC101-135-110045-
/O.NEW.KLBF.SV.W.0032.180511T0000Z-180511T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
600 PM MDT THU MAY 10 2018

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northern Perkins County in southwestern Nebraska...
  Southwestern Keith County in southwestern Nebraska...

* Until 645 PM MDT

* At 600 PM MDT, a severe thunderstorm was located near Brule, or 8
  miles southeast of Big Springs, moving northeast at 20 mph.

  HAZARD...Golf ball size hail. 

  SOURCE...Radar indicated. 

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

* This severe thunderstorm will be near, 
  Brule around 615 PM MDT. 
  Ogallala around 645 PM MDT. 

Other locations impacted by this severe thunderstorm include Megeath.

This includes the following highways...
 Highway 61 between mile markers 73 and 92.
 Interstate 80 in Nebraska between mile markers 110 and 132.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter such as an interior room, a
bathroom, closet or basement.

&&

LAT...LON 4090 10197 4107 10204 4125 10182 4094 10131
TIME...MOT...LOC 0000Z 240DEG 18KT 4100 10193 

HAIL...1.75IN
WIND...<50MPH
 
$$

Taylor

2 follow-up statements

075 
WWUS53 KLBF 110015 RRA
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
615 PM MDT THU MAY 10 2018

NEC101-135-110045-
/O.CON.KLBF.SV.W.0032.000000T0000Z-180511T0045Z/
Perkins NE-Keith NE-
615 PM MDT THU MAY 10 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR NORTHEASTERN PERKINS AND SOUTHWESTERN KEITH COUNTIES...

At 615 PM MDT, a severe thunderstorm was located near Brule, or 7
miles southwest of Ogallala, moving northeast 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. 

This severe storm will be near...
  Ogallala around 640 PM MDT. 

This includes the following highways...
 Highway 61 between mile markers 74 and 92.
 Interstate 80 in Nebraska between mile markers 115 and 132.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter, such as an interior room,
a bathroom or closet or basement.

&&

LAT...LON 4093 10181 4111 10198 4125 10182 4094 10131
TIME...MOT...LOC 0015Z 234DEG 21KT 4106 10184 

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

Taylor

364 
WWUS53 KLBF 110034
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
634 PM MDT THU MAY 10 2018

NEC101-135-110045-
/O.CON.KLBF.SV.W.0032.000000T0000Z-180511T0045Z/
Perkins NE-Keith NE-
634 PM MDT THU MAY 10 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR NORTHEASTERN PERKINS AND SOUTHWESTERN KEITH COUNTIES...

At 633 PM MDT, a severe thunderstorm was located near Brule, or 10
miles southwest of Ogallala, moving northeast at 10 mph.

HAZARD...Two inch 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. 

this severe thunderstorm will remain over mainly rural areas of
northeastern Perkins and southwestern Keith Counties.

This includes the following highways...
 Highway 61 between mile markers 74 and 92.
 Interstate 80 in Nebraska between mile markers 115 and 132.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter, such as an interior room,
a bathroom or closet or basement.

&&

LAT...LON 4093 10181 4111 10198 4125 10182 4094 10131
TIME...MOT...LOC 0033Z 241DEG 8KT 4101 10183 

HAIL...2.00IN
WIND...60MPH
 
$$

Taylor

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 May 10, 2:49 PM MDT, 3 hours 11 minutes earlier.

Area forecast discussion, May 10, 2:49 PM MDT, 3 hours 11 minutes before

Area Forecast Discussion
National Weather Service North Platte NE
349 PM CDT Thu May 10 2018

.SHORT TERM...(This evening through Friday)
Issued at 334 PM CDT Thu May 10 2018

Models continue to agree that thunderstorms will congeal into an MCS
across the Sandhills into southwest NE early this evening, and then
track eastward across north central and central Nebraska mid to late
evening. Surface low pressure will be located across northeast
CO. early this evening, with a warm front extending east from the
low across west central and southwest Nebraska. This is the area
where low level moisture will be maximized with SFC dew points
near 60F. This is also the area of best instability and strongest
shear. Large hail and wind damage seem most likely in these areas
as the storms move through. In addition there is a small chance
that an isolated tornado may form, especially right near the warm
front where LCL levels may be lower due to the local higher
moisture content.

.LONG TERM...(Friday night through Thursday)
Issued at 334 PM CDT Thu May 10 2018

Unsettled weather will continue Friday into Saturday. A large upper
level low pressure system will remain established across the
western CONUS. We'll be on the eastern fringes, with a chance for
showers through Saturday. NAM does continue to indicate some
instability in the mid levels Friday night, and will include
thunder during this time. Otherwise the surface front will be well
to the south in KS, with an overcast stratus cloud deck and cool
temperatures locked in our area both Friday and Saturday. By
Sunday, expected some improvement as the upper level low weakens
across the Rockies. Breaks in the clouds should allow highs to
reach the mid and upper 60s.

The upper trough will reload and deepen next week across the
western U.S. This will continue southwest flow aloft across the
central plains. A stationary front will meander north and south
during this time, separating warm, humid Gulf air to the south and
cooler drier Canadian air to the north. This, with the upper
trough locate d to the west, should yield a good set up for at
least scattered thunderstorms at times. Highs mostly will be in
the mid to upper 70s, with perhaps some lower 80s.

&&

.AVIATION...(For the 18Z TAFS through 18Z Friday afternoon)
Issued at 1246 PM CDT Thu May 10 2018

Main forecast challenge involves timing of TSRA and coverage, as
well as stratus to follow. Short range models/CAMS indicate a
variety of possible outcomes with the TSRA but confidence is good
on at least SCT coverage of storms by this evening. Main complex
should track across the Sandhills but will affect both TAF sites
this evening. Stratus should develop quickly behind the MCS cold
pool and will remain in place for most of the day Friday.
Therefore a trend toward LIFR is in the forecast.

&&

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

SHORT TERM...Taylor
LONG TERM...Taylor
AVIATION...Stoppkotte

Hazardous weather outlook, May 10, 2:52 PM MDT, 3 hours 8 minutes before

Hazardous Weather Outlook
National Weather Service North Platte NE
352 PM CDT Thu May 10 2018

NEZ004>010-022>029-035>038-056>059-069>071-094-112100-
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-
352 PM CDT Thu May 10 2018 /252 PM MDT Thu May 10 2018/

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

.DAY ONE...TONIGHT.

Severe thunderstorms capable of large hail and wind damage are
expected late this afternoon and early evening across western
Nebraska. The risk of severe weather will spread east into north
central and central Nebraska this evening.

Storm activity will develop across the Panhandle late this
afternoon. The thunderstorms are expected to become numerous as
they move east through western Nebraska early this evening and
later across north central Nebraska in central Nebraska.

Large hail is the main threat late this afternoon and early this
evening across the Panhandle and western Nebraska. Then more of a
wind damage threat is expected as storms move east across north
central and central Nebraska.

An isolated tornado could form late this afternoon or early this
evening, and this would be most likely to occur about 35 miles
north or south of a line from Oshkosh to North Platte.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

Thunderstorms are possible at times Friday through Wednesday. The
risk of organized severe weather appears low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late this afternoon and tonight.

&&

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

Taylor

In the hours before

Local storm report, May 10, 4:14 PM MDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
514 PM CDT THU MAY 10 2018

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

0511 PM     HAIL             22 SE GORDON            42.58N 101.90W
05/10/2018  E1.00 INCH       CHERRY             NE   PUBLIC

&&

JGOMEZ

Special weather statement, May 10, 4:15 PM MDT, 1 hour 45 minutes before

Special Weather Statement
National Weather Service North Platte NE
415 PM MDT THU MAY 10 2018

NEZ022-056-102300-
Deuel NE-Garden NE-
415 PM MDT THU MAY 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GARDEN AND NORTHERN
DEUEL COUNTIES UNTIL 500 PM MDT...

At 415 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Lodgepole, or 14 miles northwest of Chappell, moving
northeast at 40 mph.

Nickel size hail will be possible with this storm.

This strong thunderstorm will be near...
  Oshkosh around 445 PM MDT.
  Lewellen around 455 PM MDT.

Other locations impacted by this storm include Ash Hollow State
Historical Park, Bluewater Battlefield State Historical Park, Mount
Vernon, Windlass Hill, Intersection of Highway 27 and 9 Mile Road and
Sugar Loaf Hill.

This includes Highway 92 between mile markers 115 and 117.

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.

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.

&&

A severe thunderstorm watch remains in effect until 700 PM MDT for
the Panhandle of Nebraska.

LAT...LON 4146 10264 4169 10199 4142 10201 4140 10208
      4119 10209 4113 10261 4139 10261 4140 10264
TIME...MOT...LOC 2215Z 241DEG 34KT 4126 10263

Taylor

Local storm report, May 10, 5:29 PM MDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
629 PM CDT THU MAY 10 2018

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

0613 PM     HAIL             2 E GORDON              42.81N 102.16W
05/10/2018  M1.00 INCH       SHERIDAN           NE   TRAINED SPOTTER

&&

ET

Local storm report, May 10, 5:33 PM MDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
633 PM CDT THU MAY 10 2018

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

0610 PM     HAIL             18 ESE LAKESIDE         41.96N 102.14W
05/10/2018  E1.75 INCH       GARDEN             NE   PUBLIC

            GOLF BALL SIZE HAIL AND 40 TO 50 MPH WINDS.

&&

JGOMEZ

Local storm report, May 10, 5:47 PM MDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
647 PM CDT THU MAY 10 2018

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

0635 PM     HEAVY RAIN       GORDON                  42.81N 102.20W
05/10/2018  E0.00 INCH       SHERIDAN           NE   PUBLIC

            HEAVY RAIN, STREET FLOODING IN TOWN.

&&

JGOMEZ

Local storm report, May 10, 5:58 PM MDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
658 PM CDT THU MAY 10 2018

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

0632 PM     HAIL             19 N ELLSWORTH          42.33N 102.29W
05/10/2018  E1.00 INCH       SHERIDAN           NE   PUBLIC

&&

JGOMEZ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 6:09 PM MDT	Severe Thunderstorm Warning	LBF	Garden	51 min
May 10, 6:11 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	28 min
May 10, 6:27 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Grant	48 min
May 10, 6:42 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	48 min
May 10, 6:50 PM MDT	Areal Flood Advisory	LBF	Keith, Perkins	3 hr
May 10, 6:58 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Keith	47 min
May 10, 7:05 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	40 min
May 10, 7:16 PM MDT	Severe Thunderstorm Warning	LBF	Hooker, Logan, McPherson, Thomas	44 min
May 10, 7:29 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, Perkins	46 min
May 10, 7:42 PM MDT	Severe Thunderstorm Warning	LBF	Perkins	48 min
May 10, 7:47 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Logan, McPherson, Thomas	43 min
May 10, 8:12 PM MDT	Special Weather Statement	LBF	Lincoln	48 min
May 10, 8:25 PM MDT	Areal Flood Advisory	LBF	Perkins	3 hr
May 10, 8:28 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln, Perkins	47 min
May 10, 8:37 PM MDT	Special Weather Statement	LBF	Lincoln	53 min
May 10, 8:41 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	49 min
May 10, 8:57 PM MDT	Special Weather Statement	LBF	Custer	48 min
May 10, 9:05 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Lincoln	55 min
May 10, 9:09 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	51 min
May 10, 9:13 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln, Perkins	62 min
May 10, 9:20 PM MDT	Areal Flood Advisory	LBF	Lincoln, Perkins	3 hr
May 10, 9:44 PM MDT	Areal Flood Advisory	LBF	Keith	3 hr
May 10, 9:58 PM MDT	Severe Thunderstorm Warning	LBF	Custer	62 min
May 10, 10:01 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	29 min
May 10, 10:25 PM MDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	50 min
May 10, 10:30 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	45 min
May 10, 10:59 PM MDT	Severe Thunderstorm Warning	LBF	Custer	31 min
May 10, 11:12 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	48 min
May 10, 11:41 PM MDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	49 min
May 10, 11:53 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	52 min
May 11, 12:44 AM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	46 min
May 11, 1:27 AM MDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan, McPherson	48 min
May 11, 2:12 AM MDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan	63 min
May 11, 3:05 AM MDT	Special Weather Statement	LBF	Hooker	55 min
May 11, 3:36 AM MDT	Special Weather Statement	LBF	Grant	39 min
May 11, 3:58 AM MDT	Special Weather Statement	LBF	Hooker	47 min
May 11, 4:14 AM MDT	Special Weather Statement	LBF	Grant	46 min
May 11, 4:18 AM MDT	Special Weather Statement	LBF	Thomas	27 min
May 11, 4:50 AM MDT	Special Weather Statement	LBF	Thomas	40 min
May 11, 4:56 AM MDT	Special Weather Statement	LBF	Cherry	49 min
May 11, 5:53 AM MDT	Special Weather Statement	LBF	Brown	52 min
May 11, 6:55 AM MDT	Special Weather Statement	LBF	Thomas	50 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.