Alert archive / Nebraska / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 2, NWS North Platte, NE

April 30, 2018Custer County, Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 30, 2018, 5:50 PM CDT for Custer County, Lincoln County, Nebraska. It was in force for 40 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: Apr 30, 2018, 5:50 PM CDT (22:50 UTC)
Expired: Apr 30, 2018, 6:30 PM CDT
In force: 40 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Custer County, NE, Lincoln County, NE

The radar

The North Platte radar (KLNX), 84 km from the middle of the area, began a volume at 22:55 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
Apr 30, 5:55 PM CDT	HAIL 1	16 Nne Brady, NE
Apr 30, 6:08 PM CDT	TSTM WND GST 64	8 Wsw Callaway, 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
Apr 30, 5:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.8 hours before the alert went out and 39 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1703 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 458 m²/s²
0-3 km storm-relative helicity: 520 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

153 
WUUS53 KLBF 302250
SVRLBF
NEC041-111-302330-
/O.NEW.KLBF.SV.W.0002.180430T2250Z-180430T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
550 PM CDT MON APR 30 2018

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northeastern Lincoln County in southwestern Nebraska...
  West central Custer County in central Nebraska...

* Until 630 PM CDT

* At 550 PM CDT, a severe thunderstorm was located 13 miles north of
  Brady, or 21 miles southeast of Stapleton, moving northeast at 40
  mph.

  HAZARD...60 mph wind gusts and half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Arnold, Finchville, Pleasant Hill and Milldale. 

This includes Highway 92 between mile markers 248 and 267.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4108 10029 4117 10040 4159 10011 4142 9976
TIME...MOT...LOC 2250Z 223DEG 33KT 4121 10029 

HAIL...1.25IN
WIND...60MPH
 
$$

Taylor

1 follow-up statement

585 
WWUS53 KLBF 302305
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
605 PM CDT MON APR 30 2018

NEC111-302313-
/O.CAN.KLBF.SV.W.0002.000000T0000Z-180430T2330Z/
Lincoln NE-
605 PM CDT MON APR 30 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LINCOLN 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 1100 PM CDT for
central and southwestern Nebraska.

LAT...LON 4114 10020 4137 10024 4159 10011 4142 9976
TIME...MOT...LOC 2303Z 223DEG 33KT 4130 10018 

$$

NEC041-302330-
/O.CON.KLBF.SV.W.0002.000000T0000Z-180430T2330Z/
Custer NE-
605 PM CDT MON APR 30 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR WEST CENTRAL CUSTER COUNTY...

At 603 PM CDT, a severe thunderstorm was located 8 miles south of
Arnold, or 21 miles southeast of Stapleton, moving northeast at 40
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...
Arnold, Finchville, Pleasant Hill and Milldale. 

This includes Highway 92 between mile markers 249 and 267.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4114 10020 4137 10024 4159 10011 4142 9976
TIME...MOT...LOC 2303Z 223DEG 33KT 4130 10018 

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

Taylor

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 10:24 PM CDT	Special Weather Statement	LBF	Sheridan	51 min
Apr 30, 5:29 PM CDT	Special Weather Statement	LBF	Lincoln	46 min
Apr 30, 6:10 PM CDT	Special Weather Statement	LBF	Loup	50 min
Apr 30, 6:16 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Loup	44 min
Apr 30, 6:26 PM CDT	Severe Thunderstorm Warning	LBF	Custer	49 min
Apr 30, 6:38 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	37 min
Apr 30, 6:44 PM CDT	Severe Thunderstorm Warning	LBF	Holt	46 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.