Alert archive / Nebraska / Tornado Warnings in 2018

Tornado Warning 8, NWS North Platte, NE

June 17, 2018Logan County, McPherson County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 17, 2018, 5:40 PM CDT for Logan County, McPherson County, Nebraska. It was in force for 50 min. 1 report 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: Jun 17, 2018, 5:40 PM CDT (22:40 UTC)
Expired: Jun 17, 2018, 6:30 PM CDT
In force: 50 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Logan County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 51 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

Time	Report	Where	Remark
Jun 17, 5:53 PM CDT	TORNADO	2 Wnw Ringgold, NE	BRIEF ROPE TORNADO

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
Jun 17, 2:35 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.7 hours before the alert went out and 53 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: 74 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 840 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

950 
WFUS53 KLBF 172240
TORLBF
NEC113-117-172330-
/O.NEW.KLBF.TO.W.0008.180617T2240Z-180617T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
540 PM CDT SUN JUN 17 2018

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Northwestern Logan County in west central Nebraska...
  Eastern McPherson County in west central Nebraska...

* Until 630 PM CDT.
    
* At 539 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Tryon, moving northeast at 35 mph.

  HAZARD...Tornado and quarter 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 dangerous storm will be near...
  Ringgold around 555 PM CDT.

This includes the following highways...
 Highway 92 between mile markers 196 and 217.
 Highway 97 between mile markers 18 and 44.

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 4140 10099 4156 10111 4174 10097 4174 10079
      4169 10053 4140 10080
TIME...MOT...LOC 2239Z 240DEG 32KT 4153 10096 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

JWS

3 follow-up statements

728 
WWUS53 KLBF 172301
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
601 PM CDT SUN JUN 17 2018

NEC113-117-172330-
/O.CON.KLBF.TO.W.0008.000000T0000Z-180617T2330Z/
Logan NE-McPherson NE-
601 PM CDT SUN JUN 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHWESTERN LOGAN AND EASTERN MCPHERSON COUNTIES...
    
At 600 PM CDT, a confirmed tornado was located over Ringgold, or 8
miles east of Tryon, moving northeast at 35 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Public confirmed tornado.

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
northwestern Logan and eastern McPherson Counties.

This includes the following highways...
 Highway 92 between mile markers 196 and 217.
 Highway 97 between mile markers 18 and 44.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4140 10099 4156 10111 4174 10097 4174 10079
      4169 10053 4140 10080
TIME...MOT...LOC 2300Z 232DEG 30KT 4154 10079 

TORNADO...OBSERVED
HAIL...1.00IN

$$

JWS

063 
WWUS53 KLBF 172316
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
616 PM CDT SUN JUN 17 2018

NEC113-117-172330-
/O.CON.KLBF.TO.W.0008.000000T0000Z-180617T2330Z/
Logan NE-McPherson NE-
616 PM CDT SUN JUN 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHWESTERN LOGAN AND EASTERN MCPHERSON COUNTIES...
    
At 616 PM CDT, a severe thunderstorm capable of producing a tornado
was located 12 miles northeast of Ringgold, or 13 miles northwest of
Stapleton, moving northeast at 30 mph.

HAZARD...Tornado and quarter 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
northwestern Logan and eastern McPherson Counties.

This includes the following highways...
 Highway 92 between mile markers 206 and 217.
 Highway 97 between mile markers 18 and 26.

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 4140 10092 4174 10091 4174 10079 4169 10053
      4140 10080
TIME...MOT...LOC 2316Z 233DEG 26KT 4166 10063 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

JWS

151 
WWUS53 KLBF 172329
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
629 PM CDT SUN JUN 17 2018

NEC113-117-172339-
/O.EXP.KLBF.TO.W.0008.000000T0000Z-180617T2330Z/
Logan NE-McPherson NE-
629 PM CDT SUN JUN 17 2018

...THE TORNADO WARNING FOR NORTHWESTERN LOGAN AND EASTERN MCPHERSON
COUNTIES WILL EXPIRE AT 630 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However heavy rain is still possible with this
thunderstorm.

A Tornado Watch remains in effect until 1000 PM CDT for west central
Nebraska.

LAT...LON 4140 10092 4174 10091 4174 10079 4169 10053
      4140 10080
TIME...MOT...LOC 2329Z 240DEG 32KT 4171 10051 

$$

JWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 7:32 PM CDT	Special Weather Statement	LBF	Cherry	28 min
Jun 16, 7:48 PM CDT	Areal Flood Advisory	LBF	Cherry, Sheridan	3 hr
Jun 16, 8:46 PM CDT	Areal Flood Advisory	LBF	Sheridan	3 hr
Jun 17, 2:13 AM CDT	Flash Flood Watch	LBF	Cherry, Sheridan	25 hr
Jun 17, 2:53 PM CDT	Severe Thunderstorm Warning	LBF	Deuel	37 min
Jun 17, 3:08 PM CDT	Tornado Warning	LBF	Deuel	52 min
Jun 17, 3:30 PM CDT	Tornado Warning Tornado observed	LBF	Deuel, Keith	45 min
Jun 17, 4:06 PM CDT	Tornado Warning	LBF	Keith	39 min
Jun 17, 4:32 PM CDT	Tornado Warning	LBF	Arthur, Keith, McPherson	43 min
Jun 17, 4:59 PM CDT	Special Weather Statement	LBF	Lincoln	46 min
Jun 17, 5:07 PM CDT	Tornado Warning Tornado observed	LBF	Keith, Lincoln, McPherson	38 min
Jun 17, 5:16 PM CDT	Severe Thunderstorm Warning	LBF	Logan	44 min
Jun 17, 5:29 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan, McPherson	46 min
Jun 17, 5:47 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Logan, Thomas	43 min
Jun 17, 6:29 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown	33 min
Jun 17, 6:48 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Loup, Rock	42 min
Jun 17, 6:53 PM CDT	Special Weather Statement	LBF	Holt	52 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.