Alert archive / Nebraska / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 46, NWS North Platte, NE

May 10, 2018Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 10, 2018, 10:09 PM CDT for Lincoln County, Nebraska. It was in force for 51 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 10, 2018, 10:09 PM CDT (03:09 UTC)
Expired: May 10, 2018, 11:00 PM CDT
In force: 51 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

County Lincoln County, NE

The radar

The North Platte radar (KLNX), 119 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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, 7:59 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.2 hours before the alert went out and 28 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.

069 
WUUS53 KLBF 110309
SVRLBF
NEC111-110400-
/O.NEW.KLBF.SV.W.0046.180511T0309Z-180511T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
1009 PM CDT THU MAY 10 2018

The National Weather Service in North Platte has issued a

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

* Until 1100 PM CDT

* At 1008 PM CDT, severe thunderstorms were located along a line
  extending from near Oconto to near Moorefield, moving east at 45
  mph.

  HAZARD...70 mph wind gusts and penny size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings. 

* Locations impacted include...
  Brady, Wellfleet, Hansen Memorial Reserve State Wildlife Management
  Area, Jeffrey Canyon State Wildlife Management Area and Vroman.

This includes the following highways...
 Interstate 80 in Nebraska between mile markers 198 and 208.
 Highway 83 between mile markers 52 and 69.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4092 10085 4105 10023 4103 10022 4070 10022
      4070 10085
TIME...MOT...LOC 0308Z 276DEG 38KT 4107 9980 4075 10044 

HAIL...0.75IN
WIND...70MPH
 
$$

Taylor/Gomez

1 follow-up statement

692 
WWUS53 KLBF 110338
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1038 PM CDT THU MAY 10 2018

NEC111-110400-
/O.CON.KLBF.SV.W.0046.000000T0000Z-180511T0400Z/
Lincoln NE-
1038 PM CDT THU MAY 10 2018

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

At 1036 PM CDT, severe thunderstorms were located along a line
extending from 7 miles northeast of Sumner to near Eustis, moving
east at 45 mph.

HAZARD...70 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Brady, Wellfleet, Hansen Memorial Reserve State Wildlife Management
Area, Jeffrey Canyon State Wildlife Management Area and Vroman.

This includes the following highways...
 Interstate 80 in Nebraska between mile markers 198 and 208.
 Highway 83 between mile markers 52 and 69.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4092 10085 4105 10023 4103 10022 4070 10022
      4070 10085
TIME...MOT...LOC 0336Z 276DEG 38KT 4104 9943 4072 10007 

HAIL...0.75IN
WIND...70MPH
 
$$

Gomez

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, 7:08 PM CDT, 3 hours 1 minute earlier.

Area forecast discussion, May 10, 7:08 PM CDT, 3 hours 1 minute before

Area Forecast Discussion
National Weather Service North Platte NE
708 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 00Z TAFS through 00Z Friday evening)
Issued at 644 PM CDT Thu May 10 2018

Numerous thunderstorms developing across the eastern Panhandle
into the far western Sandhills. Storms are expected to continue
through the evening hours with movement east-northeast; storms
are anticipated to congeal and transition to clusters/line this
evening as well. Storms are expected to exit out of the local
forecast area during the small hours. Meanwhile, ceilings are
expected to deteriorate to low-end MVFR (less than 2 kft) to IFR
overnight with sub-VFR conditions continuing tomorrow.

&&

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

SHORT TERM...Taylor
LONG TERM...Taylor
AVIATION...ET

Hazardous weather outlook, May 10, 8:14 PM CDT, 1 hour 55 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service North Platte NE
814 PM CDT Thu May 10 2018

NEZ004>010-022>029-035>038-056>059-069>071-094-120115-
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-
814 PM CDT Thu May 10 2018 /714 PM MDT Thu May 10 2018/

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

.DAY ONE...TONIGHT.

Scattered to numerous strong to severe thunderstorms capable of
damaging winds, locally heavy rainfall, and hail are possible
this evening into the early small hours across most of western and
north central Nebraska, outside the eastern Panhandle. A Severe
Thunderstorm Watch is in effect.

Damaging winds and locally heavy rainfall are the primary
threats, however, large hail cannot be ruled out through the early
evening.

.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/ET

In the hours before

Local storm report, May 10, 9:32 PM CDT, 37 minutes before

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

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

0923 PM     TSTM WND GST     2 W HALSEY              41.90N 100.31W
05/10/2018  M48 MPH          THOMAS             NE   MESONET

            BESSEY NE RAWS HSYN1

&&

ET

Special weather statement, May 10, 9:37 PM CDT, 32 minutes before

Special Weather Statement
National Weather Service North Platte NE
937 PM CDT THU MAY 10 2018

NEZ059-110330-
Lincoln NE-
937 PM CDT THU MAY 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL LINCOLN COUNTY UNTIL 1030
PM CDT...

At 937 PM CDT, Doppler radar was tracking a strong thunderstorm over
North Platte, moving east at 25 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
North Platte, Maxwell, North Platte Airport, Lake Maloney State
Recreation Area and Keith.

This includes the following highways...
 Highway 97 near mile marker 1.
 Interstate 80 in Nebraska between mile markers 174 and 196.
 Highway 83 between mile markers 75 and 89.

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.

&&

A severe thunderstorm watch remains in effect until 300 AM CDT for
southwestern Nebraska.

LAT...LON 4102 10084 4120 10084 4124 10051 4101 10042
TIME...MOT...LOC 0237Z 267DEG 22KT 4112 10075

Taylor

Local storm report, May 10, 9:46 PM CDT, 23 minutes before

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

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

0939 PM     TSTM WND GST     NORTH PLATTE            41.13N 100.77W
05/10/2018  M64 MPH          LINCOLN            NE   ASOS

            KLBF ASOS PEAK WIND GUST

&&

ET

Local storm report, May 10, 9:49 PM CDT, 20 minutes before

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

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

0948 PM     TSTM WND GST     3 ENE NORTH PLATTE      41.15N 100.72W
05/10/2018  M64 MPH          LINCOLN            NE   ASOS

            LEE BIRD FIELD ASOS STILL GUSTING 56KTS

&&

SNIVELY

Special weather statement, May 10, 9:57 PM CDT, 12 minutes before

Special Weather Statement
National Weather Service North Platte NE
957 PM CDT THU MAY 10 2018

NEZ038-110345-
Custer NE-
957 PM CDT THU MAY 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LOUP...NORTHEASTERN
LINCOLN...CUSTER AND SOUTHEASTERN BLAINE COUNTIES UNTIL 1045 PM
CDT...

At 957 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles north of Victoria Springs State
Recreation Area to near Merna to 9 miles west of Callaway. Movement
was east at 45 mph.

Wind gusts of 50 to 55 mph will be possible with these storms.

Locations impacted include...
Broken Bow, Callaway, Sargent, Ansley, Merna, Anselmo, Comstock,
Berwyn, Victoria Springs State Recreation Area, Weissert,
Westerville, Lillian, Milburn, Round Valley, Walworth, Arcadia
Diversion Dam State Wildlife Management Area, Wescott, Lodi, Buckeye
and Pressey State Wildlife Management Area.

This includes the following highways...
 Highway 183 between mile markers 80 and 121.
 Highway 2 between mile markers 254 and 300.
 Highway 92 between mile markers 265 and 304.

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 4114 9937 4119 10024 4144 9993 4174 9992
      4174 9921 4143 9921
TIME...MOT...LOC 0257Z 254DEG 39KT 4176 9979 4146 9985 4126 10009

Jacobs/JGO

Local storm report, May 10, 10:06 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1006 PM CDT THU MAY 10 2018

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

1005 PM     TSTM WND GST     8 SW CALLAWAY           41.21N 100.03W
05/10/2018  M56 MPH          CUSTER             NE   CO-OP OBSERVER

&&

ET

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 7:00 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	45 min
May 10, 7:09 PM CDT	Severe Thunderstorm Warning	LBF	Garden	51 min
May 10, 7:11 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	28 min
May 10, 7:27 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Grant	48 min
May 10, 7:42 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	48 min
May 10, 7:50 PM CDT	Areal Flood Advisory	LBF	Keith, Perkins	3 hr
May 10, 7:58 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Keith	47 min
May 10, 8:05 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	40 min
May 10, 8:16 PM CDT	Severe Thunderstorm Warning	LBF	Hooker, Logan, McPherson, Thomas	44 min
May 10, 8:29 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, Perkins	46 min
May 10, 8:42 PM CDT	Severe Thunderstorm Warning	LBF	Perkins	48 min
May 10, 8:47 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Logan, McPherson, Thomas	43 min
May 10, 9:12 PM CDT	Special Weather Statement	LBF	Lincoln	48 min
May 10, 9:25 PM CDT	Areal Flood Advisory	LBF	Perkins	3 hr
May 10, 9:28 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, Perkins	47 min
May 10, 9:37 PM CDT	Special Weather Statement	LBF	Lincoln	53 min
May 10, 9:41 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	49 min
May 10, 9:57 PM CDT	Special Weather Statement	LBF	Custer	48 min
May 10, 10:05 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Lincoln	55 min
May 10, 10:13 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, Perkins	62 min
May 10, 10:20 PM CDT	Areal Flood Advisory	LBF	Lincoln, Perkins	3 hr
May 10, 10:44 PM CDT	Areal Flood Advisory	LBF	Keith	3 hr
May 10, 10:58 PM CDT	Severe Thunderstorm Warning	LBF	Custer	62 min
May 10, 11:01 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	29 min
May 10, 11:25 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	50 min
May 10, 11:30 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	45 min
May 10, 11:59 PM CDT	Severe Thunderstorm Warning	LBF	Custer	31 min
May 11, 12:12 AM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	48 min
May 11, 12:41 AM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	49 min
May 11, 12:53 AM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	52 min
May 11, 1:44 AM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	46 min
May 11, 2:27 AM CDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan, McPherson	48 min
May 11, 3:12 AM CDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan	63 min
May 11, 4:05 AM CDT	Special Weather Statement	LBF	Hooker	55 min
May 11, 4:36 AM CDT	Special Weather Statement	LBF	Grant	39 min
May 11, 4:58 AM CDT	Special Weather Statement	LBF	Hooker	47 min
May 11, 5:14 AM CDT	Special Weather Statement	LBF	Grant	46 min
May 11, 5:18 AM CDT	Special Weather Statement	LBF	Thomas	27 min
May 11, 5:50 AM CDT	Special Weather Statement	LBF	Thomas	40 min
May 11, 5:56 AM CDT	Special Weather Statement	LBF	Cherry	49 min
May 11, 6:53 AM CDT	Special Weather Statement	LBF	Brown	52 min
May 11, 7:55 AM CDT	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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.