Alert archive / Nebraska / Tornado Warnings in 2018

Tornado Warning 12, NWS North Platte, NE

July 2, 2018Logan County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 2, 2018, 8:11 PM CDT for Logan County, Nebraska. It was in force for 24 min. 3 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: Jul 2, 2018, 8:11 PM CDT (01:11 UTC)
Expired: Jul 2, 2018, 8:35 PM CDT
In force: 24 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.0 in

County Logan County, NE

The radar

The North Platte radar (KLNX), 53 km from the middle of the area, began a volume at 01:12 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
Jul 2, 8:12 PM CDT	FUNNEL CLOUD	5 W Stapleton, NE	CONE FUNNEL HALFWAY TO THE GROUND.
Jul 2, 8:20 PM CDT	HAIL 1.75	Stapleton, NE
Jul 2, 8:34 PM CDT	HAIL 1.75	2 N Stapleton, NE	RANGING FROM QUARTERS TO GOLF BALLS.

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
Jul 2, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.2 hours before the alert went out and 40 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: 3199 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1351 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 24.3

Open this sounding in Storm Lab

The text

As transmitted.

908 
WFUS53 KLBF 030111
TORLBF
NEC113-030200-
/O.NEW.KLBF.TO.W.0012.180703T0111Z-180703T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
811 PM CDT MON JUL 2 2018

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Southwestern Logan County in west central Nebraska...

* Until 900 PM CDT.

* At 811 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Stapleton, and is nearly stationary.

  HAZARD...Tornado and hail up to two inches in diameter.

  SOURCE...Weather spotters reported funnel cloud.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Stapleton around 900 PM CDT.

This includes the following highways...
 Highway 92 between mile markers 221 and 228.
 Highway 83 between mile markers 110 and 116.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4146 10066 4151 10067 4156 10050 4144 10049
TIME...MOT...LOC 0111Z 243DEG 2KT 4149 10064 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

Kulik

1 follow-up statement

525 
WWUS53 KLBF 030135
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
835 PM CDT MON JUL 2 2018

NEC113-030144-
/O.CAN.KLBF.TO.W.0012.000000T0000Z-180703T0200Z/
Logan NE-
835 PM CDT MON JUL 2 2018

...THE TORNADO WARNING FOR SOUTHWESTERN LOGAN COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

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


LAT...LON 4146 10066 4151 10067 4156 10050 4144 10049
TIME...MOT...LOC 0133Z 243DEG 2KT 4150 10062 

$$

Kulik

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 7:05 PM CDT	Flash Flood Warning	LBF	Logan	3 hr
Jul 2, 7:08 PM CDT	Tornado Warning	LBF	Logan, McPherson	52 min
Jul 2, 7:29 PM CDT	Severe Thunderstorm Warning	LBF	Logan	35 min
Jul 2, 8:01 PM CDT	Severe Thunderstorm Warning	LBF	Logan	44 min
Jul 2, 8:33 PM CDT	Special Weather Statement	LBF	Lincoln	42 min
Jul 2, 8:33 PM CDT	Tornado Warning	LBF	Logan	42 min
Jul 2, 9:11 PM CDT	Severe Thunderstorm Warning	LBF	Logan	49 min
Jul 2, 9:14 PM CDT	Special Weather Statement	LBF	Logan	46 min
Jul 2, 9:17 PM CDT	Areal Flood Advisory	LBF	Logan	6 hr
Jul 2, 9:39 PM CDT	Special Weather Statement	LBF	Keith	36 min
Jul 2, 9:57 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	48 min
Jul 2, 10:02 PM CDT	Special Weather Statement	LBF	McPherson	43 min
Jul 2, 10:45 PM CDT	Special Weather Statement	LBF	Arthur	45 min
Jul 2, 11:07 PM CDT	Special Weather Statement	LBF	McPherson	23 min
Jul 2, 11:08 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, McPherson	38 min
Jul 2, 11:33 PM CDT	Special Weather Statement	LBF	McPherson	27 min
Jul 3, 12:00 AM CDT	Special Weather Statement	LBF	Logan	30 min
Jul 3, 12:33 AM CDT	Special Weather Statement	LBF	Logan	42 min
Jul 3, 1:15 AM CDT	Special Weather Statement	LBF	Custer	45 min

Nearby

Tornado Warnings in Nebraska, 2018 Every tornado warning in 2018 Tornadoes 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.