Alert archive / Nebraska / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 236, NWS North Platte, NE

August 26, 2017Cherry County, Hooker County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 26, 2017, 6:01 PM MDT for Cherry County, Hooker County, Nebraska. It was in force for 44 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 26, 2017, 6:01 PM MDT (00:01 UTC)
Expired: Aug 26, 2017, 6:45 PM MDT
In force: 44 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Cherry County, NE, Hooker County, NE

The radar

The North Platte radar (KLNX), 49 km from the middle of the area, began a volume at 00:00 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
Aug 26, 2:04 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.0 hours before the alert went out and 120 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: 557 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 2379 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

450 
WUUS53 KLBF 270001
SVRLBF
NEC031-091-270045-
/O.NEW.KLBF.SV.W.0236.170827T0001Z-170827T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
601 PM MDT SAT AUG 26 2017

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  South central Cherry County in north central Nebraska...
  Northern Hooker County in west central Nebraska...

* Until 645 PM MDT

* At 600 PM MDT, a severe thunderstorm was located 9 miles northeast
  of Whitman, or 19 miles west of Mullen, moving east at 30 mph.

  HAZARD...Quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* Locations impacted include...
  Mullen, Giant Hill, Hire and Kelso. 

This includes the following highways...
 Highway 2 between mile markers 175 and 194.
 Highway 97 between mile markers 67 and 83.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4229 10084 4209 10083 4209 10085 4202 10085
      4205 10143 4209 10143 4209 10149 4222 10150
TIME...MOT...LOC 0000Z 267DEG 26KT 4214 10140 

HAIL...1.00IN
WIND...<50MPH
 
$$

Power

4 follow-up statements

563 
WWUS53 KLBF 270019
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
619 PM MDT SAT AUG 26 2017

NEC031-091-270045-
/O.CON.KLBF.SV.W.0236.000000T0000Z-170827T0045Z/
Cherry NE-Hooker NE-
619 PM MDT SAT AUG 26 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR SOUTH CENTRAL CHERRY AND NORTHERN HOOKER COUNTIES...

At 618 PM MDT, a severe thunderstorm was located 11 miles northwest
of Mullen, moving east at 30 mph.

HAZARD...Quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

Locations impacted include...
Mullen, Giant Hill, Hire and Kelso. 

This includes the following highways...
 Highway 2 between mile markers 175 and 194.
 Highway 97 between mile markers 67 and 83.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4229 10084 4209 10083 4209 10085 4202 10085
      4205 10143 4209 10143 4209 10149 4222 10150
TIME...MOT...LOC 0018Z 267DEG 26KT 4215 10122 

HAIL...1.00IN
WIND...<50MPH
 
$$

Power

949 
WWUS53 KLBF 270025
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
625 PM MDT SAT AUG 26 2017

NEC031-091-270045-
/O.CON.KLBF.SV.W.0236.000000T0000Z-170827T0045Z/
Cherry NE-Hooker NE-
625 PM MDT SAT AUG 26 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR SOUTH CENTRAL CHERRY AND NORTHEASTERN HOOKER COUNTIES...

At 625 PM MDT, a severe thunderstorm was located 10 miles northwest
of Mullen, moving east at 25 mph.

HAZARD...Quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

Locations impacted include...
Giant Hill and Kelso. 

This includes the following highways...
 Highway 2 between mile markers 187 and 194.
 Highway 97 between mile markers 68 and 82.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4229 10084 4209 10083 4209 10085 4202 10085
      4209 10133 4223 10129
TIME...MOT...LOC 0025Z 268DEG 20KT 4215 10120 

HAIL...1.00IN
WIND...<50MPH
 
$$

Power

215 
WWUS53 KLBF 270037
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
637 PM MDT SAT AUG 26 2017

NEC031-091-270045-
/O.CON.KLBF.SV.W.0236.000000T0000Z-170827T0045Z/
Cherry NE-Hooker NE-
637 PM MDT SAT AUG 26 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR SOUTH CENTRAL CHERRY AND NORTHEASTERN HOOKER COUNTIES...

At 636 PM MDT, a severe thunderstorm was located 8 miles north of
Mullen, moving east at 30 mph.

HAZARD...Quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

Locations impacted include...
Kelso.

This includes the following highways...
 Highway 2 between mile markers 187 and 194.
 Highway 97 between mile markers 68 and 82.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4207 10117 4224 10119 4227 10101 4229 10086
      4209 10085 4202 10085 4203 10090
TIME...MOT...LOC 0036Z 267DEG 26KT 4215 10108 

HAIL...1.00IN
WIND...<50MPH
 
$$

Power

701 
WWUS53 KLBF 270043
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
643 PM MDT SAT AUG 26 2017

NEC031-091-270052-
/O.EXP.KLBF.SV.W.0236.000000T0000Z-170827T0045Z/
Cherry NE-Hooker NE-
643 PM MDT SAT AUG 26 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CHERRY AND
NORTHEASTERN HOOKER COUNTIES WILL EXPIRE AT 645 PM MDT...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning will be allowed to expire.

A severe thunderstorm watch remains in effect until 1000 PM MDT for
north central and west central Nebraska.

LAT...LON 4207 10117 4224 10119 4227 10101 4229 10086
      4209 10085 4202 10085 4203 10090
TIME...MOT...LOC 0042Z 267DEG 26KT 4215 10103 

$$

Power

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 26, 5:15 PM MDT, 46 minutes earlier.

Area forecast discussion, Aug 26, 5:15 PM MDT, 46 minutes before

Area Forecast Discussion
National Weather Service North Platte NE
615 PM CDT Sat Aug 26 2017

.SHORT TERM...(This evening through Sunday)
Issued at 320 PM CDT Sat Aug 26 2017

This afternoon convection lingers over Lincoln and Custer
Counties. Models did not handle this at all today. Cells beginning
to develop over northwest Nebraska Panhandle this afternoon. Will
include a pre first period and update at 7pm with latest and
greatest. Instability to the west this afternoon with favorable
shear aloft over northwest Nebraska into the eastern Nebraska
Panhandle. Severe thunderstorm watch in place over the northwest.
Storms will spread east over night with conditions not as
favorable as you move off the higher terrain. Lows in the 50s
tonight with stratus developing after midnight. Lingering stratus
into Sunday morning with temperatures rising to around 80 late.

.LONG TERM...(Sunday night through Saturday)
Issued at 342 PM CDT Sat Aug 26 2017

Some stratus to develop again Sunday night holding temperatures up
as surface high pressure builds into central plains. Highs in the
80s with lows in the 50s the firs part of the week under the
influence of high An upper wave to move east across the northern
plains on Wednesday with slight chances for precipitation over the
forecast area Wednesday through Saturday as several disturbances
move across the northern plains. Highs returning into the mid and
upper 80s with lows in the 50s and 60s.

&&

.AVIATION...(For the 00Z TAFS through 00Z Sunday evening)
Issued at 606 PM CDT Sat Aug 26 2017

Visual fight rules through 06z at terminals KLBF and KVTN then
model timesections show the potential for clouds AOB 8KFT
developing through 09Z. Low confidence in stratus field
development with ceilings AOB 5 KFT overnight as convection
ongoing roles southeast through midnight CT. By daybreak the
clouds should be lifting and clearing with visual flight rules
through 00Z Sunday.

&&

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

SHORT TERM...Power
LONG TERM...Power
AVIATION...Keck

Hazardous weather outlook, Aug 26, 1:43 PM MDT, 4 hours 18 minutes before

Hazardous Weather Outlook
National Weather Service North Platte NE
243 PM CDT Sat Aug 26 2017

NEZ004>010-022>029-035>038-056>059-069>071-094-271945-
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-
243 PM CDT Sat Aug 26 2017 /143 PM MDT Sat Aug 26 2017/

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

.DAY ONE...TONIGHT.

A slight risk for severe storms is forecast for areas west of a
line from Valentine through Broken Bow and north of Interstate 80.
there is a marginal risk of severe weather over the remainder of
western and north central Nebraska. Timing favors the evening
hours. A few storms could be severe. The hazards are large hail,
wind damage and locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

Afternoon and evening thunderstorms are possible Wednesday through
Saturday. At this time widespread severe weather is not
anticipated.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late this afternoon and evening
over the western Nebraska Sandhills.

&&

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

power

In the hours before

Special weather statement, Aug 26, 4:45 PM MDT, 1 hour 16 minutes before

Special Weather Statement
National Weather Service North Platte NE
445 PM MDT SAT AUG 26 2017

NEZ004-262330-
Sheridan NE-
445 PM MDT SAT AUG 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL SHERIDAN COUNTY
UNTIL 530 PM MDT...

At 444 PM MDT, Doppler radar was tracking a strong thunderstorm 13
miles north of Wild Horse Butte, or 16 miles south of 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...
Diamond Lake and Smith Lake State Wildlife Management Area.

This includes Highway 250 between mile markers 16 and 35.

A severe thunderstorm watch remains in effect until 1000 PM MDT for
the Panhandle of Nebraska.

LAT...LON 4253 10236 4226 10242 4234 10275 4244 10275
      4244 10277 4254 10278
TIME...MOT...LOC 2244Z 279DEG 15KT 4245 10277

Power

Special weather statement, Aug 26, 5:16 PM MDT, 45 minutes before

Special Weather Statement
National Weather Service North Platte NE
516 PM MDT SAT AUG 26 2017

NEZ023-270000-
Grant NE-
516 PM MDT SAT AUG 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CHERRY...CENTRAL
GRANT AND WESTERN HOOKER COUNTIES UNTIL 600 PM MDT...

At 515 PM MDT, Doppler radar was tracking a strong thunderstorm near
Hyannis, or 33 miles north of Arthur, moving southeast at 20 mph.

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

Locations impacted include...
Hyannis, Ashby, Pratt Lake, Spring Valley Lake and Duluth.

This includes the following highways...
 Highway 2 between mile markers 136 and 156.
 Highway 61 between mile markers 144 and 166.

A severe thunderstorm watch remains in effect until 1000 PM MDT for
north central and west central Nebraska.

LAT...LON 4210 10189 4210 10168 4193 10142 4191 10142
      4174 10168 4175 10169 4204 10197
TIME...MOT...LOC 2315Z 317DEG 16KT 4205 10182

Power

Special weather statement, Aug 26, 5:37 PM MDT, 24 minutes before

Special Weather Statement
National Weather Service North Platte NE
537 PM MDT SAT AUG 26 2017

NEZ023-035-270015-
Grant NE-Arthur NE-
537 PM MDT SAT AUG 26 2017

...SPECIAL WEATHER STATEMENT...

At 536 PM MDT, Doppler radar was tracking a strong thunderstorm near
Hyannis, or 25 miles north of Arthur, moving southeast at 25 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Arthur, Hyannis, Green Lake, Lena, Sand Puddin Lake, Three Mile Lake,
Pratt Lake, Spring Valley Lake, Cogill Lake and Calora.

This includes the following highways...
 Highway 2 between mile markers 145 and 150.
 Highway 61 between mile markers 124 and 159.
 Highway 92 between mile markers 165 and 174.

A severe thunderstorm watch remains in effect until 1000 PM MDT for
west central Nebraska.

LAT...LON 4195 10191 4204 10170 4171 10140 4163 10141
      4152 10167
TIME...MOT...LOC 2336Z 332DEG 23KT 4193 10176

Power

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 6:17 PM MDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	29 min
Aug 26, 7:51 PM MDT	Special Weather Statement	LBF	Keya Paha	39 min
Aug 26, 9:50 PM MDT	Special Weather Statement	LBF	Keya Paha	55 min
Aug 26, 10:41 PM MDT	Special Weather Statement	LBF	Brown	49 min
Aug 26, 11:30 PM MDT	Special Weather Statement	LBF	Cherry	45 min
Aug 26, 11:36 PM MDT	Special Weather Statement	LBF	Brown	39 min
Aug 26, 11:57 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Brown	48 min
Aug 27, 12:11 AM MDT	Special Weather Statement	LBF	Cherry	49 min
Aug 27, 12:36 AM MDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Loup	54 min
Aug 27, 12:46 AM MDT	Special Weather Statement	LBF	Hooker, Thomas	44 min
Aug 27, 1:01 AM MDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Hooker, Logan, McPherson, Thomas	44 min
Aug 27, 2:23 AM MDT	Special Weather Statement	LBF	Custer	52 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2017 Every severe thunderstorm warning in 2017

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.