Alert archive / Nebraska / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 24, NWS North Platte, NE

May 17, 2019Brown County, Cherry County, Thomas County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 17, 2019, 6:34 PM CDT for Brown County, Cherry County, Thomas County, Nebraska. It was in force for 41 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 17, 2019, 6:34 PM CDT (23:34 UTC)
Expired: May 17, 2019, 7:15 PM CDT
In force: 41 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Brown County, NE, Cherry County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 40 km from the middle of the area, began a volume at 23:38 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 17, 2:59 PM CDT	Tornado Watch	SPC	9 hr
May 17, 4:38 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.6 hours before the alert went out and 125 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: 31 J/kg
Mixed-layer CIN: -721 J/kg
Mixed-layer LCL: 1114 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 328 m²/s²
0-3 km storm-relative helicity: 332 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

648 
WUUS53 KLBF 172334
SVRLBF
NEC017-031-171-180015-
/O.NEW.KLBF.SV.W.0024.190517T2334Z-190518T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
634 PM CDT Fri May 17 2019

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southeastern Cherry County in north central Nebraska...
  West central Brown County in north central Nebraska...
  Northeastern Thomas County in north central Nebraska...

* Until 715 PM CDT.

* At 634 PM CDT, a severe thunderstorm was located 7 miles northwest
  of Purdum, or 17 miles northeast of Thedford, moving north at 50
  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...
  Moon Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A Tornado Watch remains in effect until 1000 PM CDT for north central
Nebraska.

LAT...LON 4253 10001 4209 10026 4209 10027 4206 10027
      4199 10031 4201 10053 4254 10046
TIME...MOT...LOC 2334Z 200DEG 45KT 4216 10035 

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

Snively

1 follow-up statement

793 
WWUS53 KLBF 172351
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
651 PM CDT Fri May 17 2019

NEC171-180001-
/O.CAN.KLBF.SV.W.0024.000000T0000Z-190518T0015Z/
Thomas NE-
651 PM CDT Fri May 17 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN THOMAS COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
north central Nebraska.

LAT...LON 4253 10001 4209 10026 4209 10049 4254 10046
TIME...MOT...LOC 2351Z 196DEG 40KT 4232 10030 

$$

NEC017-031-180015-
/O.CON.KLBF.SV.W.0024.000000T0000Z-190518T0015Z/
Cherry NE-Brown NE-
651 PM CDT Fri May 17 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR SOUTHEASTERN CHERRY AND WEST CENTRAL BROWN COUNTIES...

At 651 PM CDT, a severe thunderstorm was located 12 miles northwest
of Elsmere, or 27 miles southwest of Ainsworth, moving north at 45
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...
Moon Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4253 10001 4209 10026 4209 10049 4254 10046
TIME...MOT...LOC 2351Z 196DEG 40KT 4232 10030 

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

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 May 17, 6:34 PM CDT, 0 minutes earlier.

Area forecast discussion, May 17, 6:34 PM CDT, 0 minutes before

Area Forecast Discussion...UPDATED
National Weather Service North Platte NE
634 PM CDT Fri May 17 2019

.SHORT TERM...(This evening through Saturday night)
Issued at 319 PM CDT Fri May 17 2019

Strong southwest flow aloft combined with strong southerly low
level flow ahead of the dryline will be providing sufficient deep
layer shear to generate supercells along the dryline after about 3
PM CDT. Bunkers right-moving supercells will be from the
southwest and rapid - about 35 kts or so making supercell
interaction likely. All modes of severe weather will be possible
with initial development and as storms remain in the warm sector.
As expected, storms that encounter the warm from will have an
enhanced tornado threat as explains in prev SPC and the mesoscale
update discussions. As upper support strengthens through the
evening the small clusters will likely grow upscale to one or two
large convective systems with large hail and damaging winds a
continued threat. Storms push north into SD after midnight. Cold
front overtakes the area through the night.

Mainly a dry start to Saturday but a secondary frontal surge will
drop quickly south across the area. Some chance for weak
thunderstorm development along this front Sat afternoon though
coverage is expected to be limited.

.LONG TERM...(Sunday through Friday)
Issued at 319 PM CDT Fri May 17 2019

A cooler and wetter pattern shapes up for the first half of the work
week as yet another upper low becomes negatively tilted and closes
off over the Great Basin area. Deep southerly flow ahead of this
feature across the central and southern Plains will allow moisture
to return and increase across the area setting the stage for a
prolonged rain event in areas that have seen plenty of rain already
this year. While some deterministic solutions suggest snow at least
mixing with rain in the far northwest portion of the area,
believe at this time a lack of deep cold air will preclude
anything but a brief mix Tuesday night at this point, and
confidence on that is low. So will leave precip type as all rain
for now.

Chances for rain continue through the remainder of the week as well
and another system drops into the main long wave trough across the
west by late Wedneday and Thursday.

&&

.AVIATION...(For the 00Z TAFS through 00Z Saturday evening)
Issued at 634 PM CDT Fri May 17 2019

Storm conditions continue this evening until around 06z.
Thereafter, VFR is expected along and south of highway 2 with
IFR/MVFR/local LIFR in low or very low ceilings north of highway
2. A gradual improvement to VFR is expected 12z-18z Saturday.

&&

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

SHORT TERM...Stoppkotte
LONG TERM...Stoppkotte
AVIATION...CDC

Hazardous weather outlook, May 17, 3:18 PM CDT, 3 hours 16 minutes before

Hazardous Weather Outlook
National Weather Service North Platte NE
318 PM CDT Fri May 17 2019

NEZ004>010-022>029-035>038-056>059-069>071-094-182030-
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-
318 PM CDT Fri May 17 2019 /218 PM MDT Fri May 17 2019/

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

.DAY ONE...TONIGHT.

There is an enhanced risk for severe thunderstorms across much of
western and north central Nebraska through tonight. All types of
severe weather will be possible with these storms including very
large hail, damaging winds and isolated tornadoes. The greatest
risk for tornadoes is expected to be south and east of a line from
O'Neill to Thedford to Big Springs. North of this area very large
hail will be possible along with damaging winds.

Locally heavy rain will also be possible with any of the stronger
storms initially, as well as later this evening when the storms
merge across north central Nebraska.

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

Heavy rainfall is possible Monday through Wednesday with most
locations seeing greater than 1" of rain and some locations
exceeding 2" total.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is requested this evening across much of
southwest into central Nebraska.

&&

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

In the hours before

Special weather statement, May 17, 5:57 PM CDT, 37 minutes before

Special Weather Statement
National Weather Service North Platte NE
557 PM CDT Fri May 17 2019

NEZ010-172330-
Holt NE-
557 PM CDT Fri May 17 2019

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN HOLT COUNTY UNTIL 630 PM
CDT...

At 557 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles south of O'neill, moving north at 50 mph.

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

Locations impacted include...
O'Neill, Inman, Midway, Scottville and Opportunity.

This includes the following highways...
 Highway 20 between mile markers 302 and 318.
 Highway 281 between mile markers 170 and 204.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 Tornado Watch remains in effect until 1000 PM CDT for north central
Nebraska.

LAT...LON 4225 9852 4226 9879 4276 9874 4274 9838
TIME...MOT...LOC 2257Z 189DEG 44KT 4236 9866

Snively

Local storm report, May 17, 5:58 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
558 PM CDT FRI MAY 17 2019

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

0556 PM     HAIL             5 NE JOHNSTOWN          42.62N 99.99W
05/17/2019  E1.75 INCH       BROWN              NE   PUBLIC

&&

RLAMB/BJT

Special weather statement, May 17, 6:02 PM CDT, 32 minutes before

Special Weather Statement
National Weather Service North Platte NE
602 PM CDT Fri May 17 2019

NEZ006-008-172345-
Brown NE-Keya Paha NE-
602 PM CDT Fri May 17 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL BROWN AND CENTRAL
KEYA PAHA COUNTIES UNTIL 645 PM CDT...

At 558 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles southwest of Springview, moving north at 40 mph.

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

Locations impacted include...
Springview, Antelope Peak, Meadville, North River Trail and Bobcat
State Wildlife Management Area.

This includes the following highways...
 Highway 183 between mile markers 209 and 225.
 Highway 12 between mile markers 31 and 57.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 midnight CDT for
north central Nebraska.

LAT...LON 4259 9985 4263 10008 4300 10002 4300 9958
TIME...MOT...LOC 2258Z 199DEG 33KT 4273 9991

Snively

Special weather statement, May 17, 6:15 PM CDT, 19 minutes before

Special Weather Statement
National Weather Service North Platte NE
615 PM CDT Fri May 17 2019

NEZ006>009-180000-
Brown NE-Rock NE-Keya Paha NE-Boyd NE-
615 PM CDT Fri May 17 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ROCK...EAST CENTRAL
BROWN...SOUTHEASTERN KEYA PAHA AND WEST CENTRAL BOYD COUNTIES UNTIL
700 PM CDT...

At 614 PM CDT, Doppler radar was tracking a strong thunderstorm near
Long Pine, or 7 miles southwest of Bassett, moving northeast at 50
mph.

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

Locations impacted include...
Bassett, Long Pine, Hofeld Lake, Thomas Creek State Wildlife
Management Area, Mariaville and Pine Glen State Wildlife Refuge.

This includes the following highways...
 Highway 183 between mile markers 175 and 201.
 Highway 20 between mile markers 245 and 263.

A Tornado Watch remains in effect until 1000 PM CDT for north central
Nebraska.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
north central Nebraska.

LAT...LON 4237 9961 4237 9991 4289 9963 4290 9921
TIME...MOT...LOC 2314Z 210DEG 43KT 4251 9964

Snively

Special weather statement, May 17, 6:18 PM CDT, 16 minutes before

Special Weather Statement
National Weather Service North Platte NE
618 PM CDT Fri May 17 2019

NEZ007-172330-
Boyd NE-
618 PM CDT Fri May 17 2019

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN BOYD COUNTY UNTIL 630 PM
CDT...

At 617 PM CDT, Doppler radar was tracking a strong thunderstorm near
Spencer, moving north at 40 mph.

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

Locations impacted include...
Spencer, Gross and Bristow.

This includes the following highways...
 Highway 281 between mile markers 209 and 223.
 Highway 12 between mile markers 114 and 124.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
north central Nebraska.

LAT...LON 4296 9848 4294 9846 4281 9854 4283 9878
      4300 9877 4300 9850
TIME...MOT...LOC 2317Z 196DEG 35KT 4288 9864

Snively

Special weather statement, May 17, 6:26 PM CDT, 8 minutes before

Special Weather Statement
National Weather Service North Platte NE
626 PM CDT Fri May 17 2019

NEZ005-008-025-026-180015-
Brown NE-Eastern Cherry NE-Thomas NE-Blaine NE-
626 PM CDT Fri May 17 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CHERRY...WEST
CENTRAL BROWN...NORTHWESTERN BLAINE AND NORTHEASTERN THOMAS COUNTIES
UNTIL 715 PM CDT...

At 625 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Thedford, moving north at 50 mph.

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

Locations impacted include...
Halsey, Elsmere, Purdum, Moon Lake, Natwick, Highway 83 crossing
Goose Creek and Highway 83 crossing the North Loup River.

This includes the following highways...
 Highway 2 between mile markers 213 and 227.
 Highway 83 between mile markers 154 and 182.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 Tornado Watch remains in effect until 1000 PM CDT for north central
Nebraska.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
north central Nebraska.

LAT...LON 4188 10028 4188 10053 4246 10057 4244 10005
TIME...MOT...LOC 2325Z 182DEG 44KT 4198 10041

Snively

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 7:35 PM CDT	Special Weather Statement	LBF	Hayes	25 min
May 16, 7:38 PM CDT	Special Weather Statement	LBF	Perkins	37 min
May 16, 8:08 PM CDT	Special Weather Statement	LBF	Keith	52 min
May 16, 8:15 PM CDT	Special Weather Statement	LBF	Lincoln	30 min
May 16, 8:30 PM CDT	Special Weather Statement	LBF	Dawson	30 min
May 16, 8:35 PM CDT	Special Weather Statement	LBF	Keith	25 min
May 16, 8:38 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	52 min
May 16, 9:40 PM CDT	Special Weather Statement	LBF	McPherson	35 min
May 17, 3:53 PM CDT	Special Weather Statement	LBF	Thomas	52 min
May 17, 4:03 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Cherry, Thomas	42 min
May 17, 4:22 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Custer, Loup, Rock	38 min
May 17, 4:24 PM CDT	Special Weather Statement	LBF	Custer	36 min
May 17, 4:27 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	48 min
May 17, 4:28 PM CDT	Special Weather Statement	LBF	Custer	32 min
May 17, 4:33 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Garden, Keith	42 min
May 17, 4:45 PM CDT	Special Weather Statement	LBF	Brown	45 min
May 17, 4:59 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Loup, Rock	46 min
May 17, 5:02 PM CDT	Special Weather Statement	LBF	Brown, Rock	28 min
May 17, 5:05 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Keith	40 min
May 17, 5:16 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	44 min
May 17, 5:29 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha	31 min
May 17, 5:32 PM CDT	Special Weather Statement	LBF	Brown	28 min
May 17, 5:37 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	38 min
May 17, 5:57 PM CDT	Special Weather Statement	LBF	Holt	33 min
May 17, 5:58 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	47 min
May 17, 6:02 PM CDT	Special Weather Statement	LBF	Keya Paha	43 min
May 17, 6:03 PM CDT	Tornado Warning Tornado observed	LBF	Frontier	42 min
May 17, 6:07 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes	53 min
May 17, 6:12 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	17 min
May 17, 6:13 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Grant, Hooker, McPherson	47 min
May 17, 6:15 PM CDT	Special Weather Statement	LBF	Rock	45 min
May 17, 6:18 PM CDT	Special Weather Statement	LBF	Boyd	12 min
May 17, 6:21 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	39 min
May 17, 6:26 PM CDT	Special Weather Statement	LBF	Blaine	49 min
May 17, 6:27 PM CDT	Severe Thunderstorm Warning	LBF	Hayes, Lincoln	24 min
May 17, 6:41 PM CDT	Tornado Warning	LBF	Frontier	49 min
May 17, 6:58 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker	47 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2019 Every severe thunderstorm warning 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.