Alert archive / Nebraska / Tornado Warnings in 2018

Tornado Warning 14, NWS North Platte, NE

July 18, 2018Garfield County, Holt County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 18, 2018, 6:03 PM CDT for Garfield County, Holt County, Nebraska. It was in force for 42 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: Jul 18, 2018, 6:03 PM CDT (23:03 UTC)
Expired: Jul 18, 2018, 6:45 PM CDT
In force: 42 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

Counties Garfield County, NE, Holt County, NE

The radar

The North Platte radar (KLNX), 136 km from the middle of the area, began a volume at 23:01 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.

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 18, 3:43 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.1 hours before the alert went out and 172 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: 86 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1058 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -91 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

As transmitted.

828 
WFUS53 KLBF 182303
TORLBF
NEC071-089-182345-
/O.NEW.KLBF.TO.W.0014.180718T2303Z-180718T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
603 PM CDT WED JUL 18 2018

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Southwestern Holt County in north central Nebraska...
  Northern Garfield County in north central Nebraska...

* Until 645 PM CDT.
    
* At 603 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles southwest of Amelia, or 24 miles north of
  Burwell, moving southeast at 40 mph.

  HAZARD...Tornado and half dollar size hail.

  SOURCE...Radar indicated rotation.

  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 tornadic thunderstorm will remain over mainly rural areas of
  southwestern Holt and northern Garfield Counties, including the
  following locations... Carson Lake, Gables and Sunfish Lake.

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 4209 9876 4198 9876 4183 9884 4191 9895
      4209 9924 4216 9923 4225 9914 4209 9873
TIME...MOT...LOC 2303Z 304DEG 34KT 4214 9913 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Buttler

2 follow-up statements

758 
WWUS53 KLBF 182317
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
617 PM CDT WED JUL 18 2018

NEC071-089-182345-
/O.CON.KLBF.TO.W.0014.000000T0000Z-180718T2345Z/
Holt NE-Garfield NE-
617 PM CDT WED JUL 18 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
SOUTHWESTERN HOLT AND NORTHERN GARFIELD COUNTIES...
    
At 616 PM CDT, a severe thunderstorm capable of producing a tornado
was located 11 miles southwest of Amelia, or 21 miles north of
Burwell, moving southeast at 30 mph.

HAZARD...Tornado and half dollar size hail.

SOURCE...Radar indicated rotation.

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.

Locations impacted include...
Carson Lake, Gables and Sunfish Lake. 

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 4209 9876 4198 9876 4183 9884 4191 9895
      4209 9924 4216 9923 4225 9914 4209 9873
TIME...MOT...LOC 2316Z 308DEG 28KT 4208 9905 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Buttler

741 
WWUS53 KLBF 182340
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
640 PM CDT WED JUL 18 2018

NEC071-089-182350-
/O.EXP.KLBF.TO.W.0014.000000T0000Z-180718T2345Z/
Holt NE-Garfield NE-
640 PM CDT WED JUL 18 2018

...THE TORNADO WARNING FOR SOUTHWESTERN HOLT AND NORTHERN GARFIELD
COUNTIES WILL EXPIRE AT 645 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

A Tornado Watch remains in effect until 1100 PM CDT for north central
Nebraska.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central Nebraska.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
North Platte.

LAT...LON 4209 9876 4198 9876 4183 9884 4191 9895
      4209 9924 4216 9923 4225 9914 4209 9873
TIME...MOT...LOC 2340Z 120DEG 22KT 4205 9900 

$$

Buttler

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 11:21 PM CDT	Special Weather Statement	LBF	Sheridan	54 min
Jul 18, 12:18 AM CDT	Special Weather Statement	LBF	Sheridan	42 min
Jul 18, 12:46 AM CDT	Special Weather Statement	LBF	Sheridan	44 min
Jul 18, 1:19 AM CDT	Severe Thunderstorm Warning	LBF	Cherry, Garden, Sheridan	41 min
Jul 18, 1:57 AM CDT	Severe Thunderstorm Warning	LBF	Arthur, Cherry, Garden, Grant, Sheridan	48 min
Jul 18, 2:49 AM CDT	Special Weather Statement	LBF	Arthur, McPherson	56 min
Jul 18, 3:48 AM CDT	Special Weather Statement	LBF	Keith	42 min
Jul 18, 3:49 AM CDT	Special Weather Statement	LBF	Garden	41 min
Jul 18, 4:28 AM CDT	Special Weather Statement	LBF	Deuel	47 min
Jul 18, 4:36 AM CDT	Special Weather Statement	LBF	Lincoln	39 min
Jul 18, 5:14 AM CDT	Special Weather Statement	LBF	Hayes	46 min
Jul 18, 5:16 AM CDT	Special Weather Statement	LBF	Perkins	44 min
Jul 18, 5:49 AM CDT	Special Weather Statement	LBF	Hayes	41 min
Jul 18, 5:59 AM CDT	Severe Thunderstorm Warning	LBF	Hayes	46 min
Jul 18, 6:04 AM CDT	Special Weather Statement	LBF	Chase	41 min
Jul 18, 6:53 AM CDT	Special Weather Statement	LBF	Hayes	22 min
Jul 18, 5:03 PM CDT	Special Weather Statement	LBF	Brown	42 min
Jul 18, 5:23 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha	37 min
Jul 18, 5:36 PM CDT	Special Weather Statement	LBF	Holt	39 min
Jul 18, 5:55 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt	15 min
Jul 18, 6:08 PM CDT	Special Weather Statement	LBF	Keya Paha	52 min
Jul 18, 6:15 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	45 min
Jul 18, 6:35 PM CDT	Special Weather Statement	LBF	Loup	40 min
Jul 18, 6:39 PM CDT	Special Weather Statement	LBF	Boyd	51 min
Jul 18, 6:48 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	46 min
Jul 18, 6:55 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Loup	50 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.