Alert archive / Nebraska / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 166, NWS North Platte, NE

August 2, 2017Keith County, Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 2, 2017, 4:37 PM MDT for Keith County, Lincoln County, Nebraska. It was in force for 38 min. 6 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
Aug 2, 2017, 4:37 PM MDT (22:37 UTC)
Expired
Aug 2, 2017, 5:15 PM MDT
In force
38 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
1.75 in
Wind
60.0 mph

Counties Keith County, NE, Lincoln County, NE

The radar

The North Platte radar (KLNX), 105 km from the middle of the area, began a volume at 22:39 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

TimeReportWhereRemark
Aug 2, 4:56 PM MDTHAIL 1.755 Nw Sarben, NEPEA TO GOLF BALL SIZE HAIL
Aug 2, 5:05 PM MDTTSTM WND DMGSarben, NECORN CROP STRIPPED DUE TO WIND AND HAIL
Aug 2, 5:05 PM MDTHAIL 2Sarben, NEVIA SOCIAL MEDIA
Aug 2, 5:07 PM MDTHAIL 1.75Sarben, NERELAYED BY PAXTON FIRE DEPARTMENT, GOLF BALL SIZE HAIL WITH 40 TO 50 MPH WINDS.
Aug 2, 5:07 PM MDTHAIL 1.75Sarben, NERELAYED BY PAXTON FIRE DEPARTMENT, GOLF BALL SIZE HAIL WITH 40 TO 50 MPH WINDS. UPDATE, THEY ALSO RELAYED DAMAGE FROM HAIL INCLUDING HOLES IN SIDING AND CRACKED TO BUSTED WINDSHIELDS.
Aug 2, 5:09 PM MDTHAIL 2.5Sarben, NEGOLF TO TENNIS BALL HAIL

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.

IssuedProductOfficeLasted
Aug 2, 2:36 PM MDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.6 hours before the alert went out and 67 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2017-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 65 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2017-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
65 J/kg
Mixed-layer CIN
-349 J/kg
Mixed-layer LCL
1470 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

820 
WUUS53 KLBF 022237
SVRLBF
NEC101-111-022315-
/O.NEW.KLBF.SV.W.0166.170802T2237Z-170802T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
537 PM CDT WED AUG 2 2017

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Eastern Keith County in southwestern Nebraska...
  West central Lincoln County in southwestern Nebraska...

* Until 615 PM CDT/515 PM MDT/

* At 536 PM CDT/436 PM MDT/, a severe thunderstorm was located 12
  miles north of Sarben, or 22 miles northeast of Ogallala, moving
  south at 30 mph.

  HAZARD...Golf 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...
  Sutherland, Paxton, Sutherland Reservoir State Recreation Area,
  Sarben, Big Bald Hill, Coker, Nevens and Broganville.

This includes Interstate 80 in Nebraska between mile markers 137 and
160.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4138 10151 4140 10142 4139 10125 4107 10102
      4100 10146 4100 10154
TIME...MOT...LOC 2236Z 350DEG 26KT 4133 10138 

HAIL...1.75IN
WIND...60MPH
 
$$

Buttler
1 follow-up statement
729 
WWUS53 KLBF 022254
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
554 PM CDT WED AUG 2 2017

NEC101-111-022315-
/O.CON.KLBF.SV.W.0166.000000T0000Z-170802T2315Z/
Keith NE-Lincoln NE-
554 PM CDT WED AUG 2 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM
CDT/515 PM MDT/ FOR EASTERN KEITH AND WEST CENTRAL LINCOLN
COUNTIES...

At 553 PM CDT/453 PM MDT/, a severe thunderstorm was located near
Sarben, or 20 miles east of Ogallala, moving south at 25 mph.

This is a very dangerous storm.

HAZARD...Baseball size hail and 60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Sutherland, Paxton, Sutherland Reservoir State Recreation Area,
Sarben, Big Bald Hill, Coker, Nevens and Broganville.

This includes Interstate 80 in Nebraska between mile markers 137 and
160.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4138 10151 4140 10142 4139 10125 4107 10102
      4100 10146 4100 10154
TIME...MOT...LOC 2253Z 350DEG 23KT 4122 10136 

HAIL...2.75IN
WIND...60MPH
 
$$

Buttler

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 6:07 PM MDTSpecial Weather StatementLBFKeith, Lincoln, Perkins53 min
Aug 1, 6:23 PM MDTSevere Thunderstorm WarningLBFHooker, Thomas27 min
Aug 1, 6:55 PM MDTSpecial Weather StatementLBFLogan, Thomas50 min
Aug 1, 7:01 PM MDTSpecial Weather StatementLBFChase, Hayes, Lincoln44 min
Aug 1, 7:05 PM MDTSpecial Weather StatementLBFChase, Hayes, Lincoln40 min
Aug 1, 7:20 PM MDTAreal Flood AdvisoryLBFLincoln, Logan3 hr
Aug 1, 7:37 PM MDTSpecial Weather StatementLBFLincoln53 min
Aug 1, 7:55 PM MDTSpecial Weather StatementLBFFrontier50 min
Aug 1, 8:25 PM MDTSpecial Weather StatementLBFCuster50 min
Aug 1, 8:38 PM MDTSpecial Weather StatementLBFFrontier52 min
Aug 1, 9:08 PM MDTSpecial Weather StatementLBFFrontier37 min
Aug 2, 3:24 PM MDTSpecial Weather StatementLBFHooker51 min
Aug 2, 3:28 PM MDTSpecial Weather StatementLBFArthur47 min
Aug 2, 3:47 PM MDTSpecial Weather StatementLBFSheridan43 min
Aug 2, 3:56 PM MDTSevere Thunderstorm WarningLBFArthur, Keith, Lincoln, McPherson64 min
Aug 2, 4:02 PM MDTSevere Thunderstorm WarningLBFCherry58 min
Aug 2, 4:24 PM MDTSpecial Weather StatementLBFThomas51 min
Aug 2, 4:44 PM MDTSevere Thunderstorm WarningLBFCherry, Grant, Hooker61 min
Aug 2, 5:13 PM MDTSevere Thunderstorm WarningLBFKeith, Lincoln, Perkins62 min
Aug 2, 5:16 PM MDTSpecial Weather StatementLBFLogan44 min
Aug 2, 5:31 PM MDTSevere Thunderstorm WarningLBFCuster, Lincoln, Logan33 min
Aug 2, 5:39 PM MDTSevere Thunderstorm WarningLBFArthur, Grant, McPherson51 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2017Every 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.