Alert archive / Nebraska / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 252, NWS North Platte, NE

October 1, 20175 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Oct 1, 2017, 6:13 PM CDT for 5 counties in Nebraska. It was in force for 47 min. 2 reports 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: Oct 1, 2017, 6:13 PM CDT (23:13 UTC)
Expired: Oct 1, 2017, 7:00 PM CDT
In force: 47 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Frontier County, NE, Hayes County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 151 km from the middle of the area, began a volume at 23:13 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
Oct 1, 6:24 PM CDT	FUNNEL CLOUD	11 Sw Hayes Center, NE	RAPIDLY ROTATING WALL CLOUD WITH A BRIEF SMALL FUNNEL THAT HAS SINCE DISSIPATED.
Oct 1, 7:10 PM CDT	TSTM WND GST 60	10 S North Platte, NE

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Oct 1, 3:25 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.2 hours before the alert went out and 74 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: 280 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 1058 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: -15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

937 
WUUS53 KLBF 012313
SVRLBF
NEC063-085-101-111-135-020000-
/O.NEW.KLBF.SV.W.0252.171001T2313Z-171002T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
613 PM CDT SUN OCT 1 2017

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northwestern Frontier County in southwestern Nebraska...
  Eastern Perkins County in southwestern Nebraska...
  Southeastern Keith County in southwestern Nebraska...
  Southwestern Lincoln County in southwestern Nebraska...
  Hayes County in southwestern Nebraska...

* Until 700 PM CDT/600 PM MDT/

* At 613 PM CDT/513 PM MDT/, severe thunderstorms were located along
  a line extending from 6 miles south of Grant to 13 miles south of
  Wallace to near Palisade, moving northeast at 40 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...
  Hayes Center, Paxton, Wallace, Madrid, Elsie, Wellfleet, Dickens,
  Maywood, Hamlet, Grainton, Hayes Center State Wildlife Management
  Area, Marengo and Somerset.

This includes the following highways...
 Highway 61 between mile markers 54 and 64.
 Interstate 80 in Nebraska between mile markers 146 and 153.
 Highway 83 between mile markers 46 and 73.

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 1100 PM CDT/1000 PM MDT/ for
southwestern Nebraska.

LAT...LON 4040 10134 4070 10135 4070 10165 4075 10177
      4116 10131 4100 10074 4065 10058 4037 10110
TIME...MOT...LOC 2313Z 230DEG 36KT 4076 10168 4065 10120 4039 10110 

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

CDC

1 follow-up statement

384 
WWUS53 KLBF 012340
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
640 PM CDT SUN OCT 1 2017

NEC101-135-012349-
/O.CAN.KLBF.SV.W.0252.000000T0000Z-171002T0000Z/
Perkins NE-Keith NE-
640 PM CDT SUN OCT 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN PERKINS AND
SOUTHEASTERN KEITH COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 1100 PM CDT for southwestern
Nebraska.

LAT...LON 4055 10108 4069 10116 4069 10135 4070 10125
      4115 10126 4100 10074 4065 10058 4050 10087
TIME...MOT...LOC 2339Z 229DEG 36KT 4087 10118 4082 10094 4056 10084 

$$

NEC063-085-111-020000-
/O.CON.KLBF.SV.W.0252.000000T0000Z-171002T0000Z/
Frontier NE-Lincoln NE-Hayes NE-
640 PM CDT SUN OCT 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR NORTHWESTERN FRONTIER...SOUTHWESTERN LINCOLN AND NORTHERN HAYES
COUNTIES...

At 639 PM CDT, severe thunderstorms were located along a line
extending from near Wallace to near Dickens to 10 miles east of Hayes
Center, moving northeast at 40 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, Wellfleet, Dickens, Maywood, Marengo, Hayes Center State
Wildlife Management Area and Somerset.

This includes the following highways...
 Interstate 80 in Nebraska between mile markers 151 and 153.
 Highway 83 between mile markers 46 and 73.

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 1100 PM CDT for southwestern
Nebraska.

LAT...LON 4055 10108 4069 10116 4069 10135 4070 10125
      4115 10126 4100 10074 4065 10058 4050 10087
TIME...MOT...LOC 2339Z 229DEG 36KT 4087 10118 4082 10094 4056 10084 

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

CDC

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 1, 5:07 PM CDT	Severe Thunderstorm Warning	LBF	Chase	38 min
Oct 1, 5:22 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Loup	38 min
Oct 1, 5:31 PM CDT	Severe Thunderstorm Warning	LBF	Custer	44 min
Oct 1, 5:37 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Hayes, Lincoln, Perkins	38 min
Oct 1, 5:53 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan	67 min
Oct 1, 6:09 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Garfield, Holt, Loup, Rock	66 min
Oct 1, 6:25 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Loup	50 min
Oct 1, 6:38 PM CDT	Severe Thunderstorm Warning	LBF	Custer	52 min
Oct 1, 6:56 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	49 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.