Alert archive / Nebraska / Tornado Warnings in 2018

Tornado Warning 16, NWS North Platte, NE

August 31, 2018Blaine County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 31, 2018, 3:59 PM CDT for Blaine County, Nebraska. It was in force for 46 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: Aug 31, 2018, 3:59 PM CDT (20:59 UTC)
Expired: Aug 31, 2018, 4:45 PM CDT
In force: 46 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Blaine County, NE

The radar

The North Platte radar (KLNX), 61 km from the middle of the area, began a volume at 20:59 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
Aug 31, 4:17 PM CDT	HAIL 1.75	5 Ne Dunning, NE	REPORT VIA SOCIAL MEDIA WITH PICTURES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.0 hours before the alert went out and 100 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: 1628 J/kg
Mixed-layer CIN: -385 J/kg
Mixed-layer LCL: 1743 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

622 
WFUS53 KLBF 312059
TORLBF
NEC009-312145-
/O.NEW.KLBF.TO.W.0016.180831T2059Z-180831T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
359 PM CDT FRI AUG 31 2018

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Blaine County in north central Nebraska...

* Until 445 PM CDT.
    
* At 359 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Dunning, or 13 miles west of Brewster, moving east
  at 15 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...
  Brewster around 445 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Milburn Diversion Dam State Wildlife Management Area.

This includes Highway 2 between mile markers 234 and 238.
 
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 4174 9968 4174 9976 4183 10017 4194 10016
      4204 9969
TIME...MOT...LOC 2059Z 263DEG 12KT 4189 10013 

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

$$

Kulik

3 follow-up statements

085 
WWUS53 KLBF 312112
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
412 PM CDT FRI AUG 31 2018

NEC009-312145-
/O.CON.KLBF.TO.W.0016.000000T0000Z-180831T2145Z/
Blaine NE-
412 PM CDT FRI AUG 31 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
SOUTHEASTERN BLAINE COUNTY...
    
At 412 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Dunning, or 10 miles southwest of Brewster, moving
east at 20 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...
  Brewster around 430 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Milburn Diversion Dam State Wildlife Management Area.

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 4174 9968 4174 9976 4181 10009 4192 10006
      4200 9969
TIME...MOT...LOC 2112Z 285DEG 19KT 4186 10004 

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

$$

Kulik

484 
WWUS53 KLBF 312130
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
430 PM CDT FRI AUG 31 2018

NEC009-312145-
/O.CON.KLBF.TO.W.0016.000000T0000Z-180831T2145Z/
Blaine NE-
430 PM CDT FRI AUG 31 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
SOUTHEASTERN BLAINE COUNTY...
    
At 430 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Brewster, moving east at 20 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
southeastern Blaine County, including the following locations...
Milburn Diversion Dam State Wildlife Management Area.

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 4174 9968 4174 9976 4184 9997 4189 9996
      4200 9969
TIME...MOT...LOC 2130Z 273DEG 18KT 4187 9994 

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

$$

Kulik

299 
WWUS53 KLBF 312145
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
445 PM CDT FRI AUG 31 2018

NEC009-312155-
/O.EXP.KLBF.TO.W.0016.000000T0000Z-180831T2145Z/
Blaine NE-
445 PM CDT FRI AUG 31 2018

...THE TORNADO WARNING FOR SOUTHEASTERN BLAINE COUNTY HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been allowed to expire.

LAT...LON 4174 9968 4174 9976 4184 9997 4189 9996
      4200 9969
TIME...MOT...LOC 2145Z 263DEG 12KT 4188 9988 

$$

Kulik

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 10:53 PM CDT	Special Weather Statement	LBF	Deuel	52 min
Aug 30, 11:29 PM CDT	Special Weather Statement	LBF	Keith	46 min
Aug 31, 5:05 AM CDT	Dense Fog Advisory	LBF	Blaine, Chase, Custer, Deuel, Frontier, Hayes and 4 more	5 hr
Aug 31, 7:13 AM CDT	Special Weather Statement	LBF	Frontier, Hayes	47 min
Aug 31, 3:57 PM CDT	Special Weather Statement	LBF	Blaine	48 min
Aug 31, 4:43 PM CDT	Special Weather Statement	LBF	Loup	47 min
Aug 31, 4:51 PM CDT	Special Weather Statement	LBF	Logan	39 min
Aug 31, 4:54 PM CDT	Severe Thunderstorm Warning	LBF	Logan	33 min
Aug 31, 5:32 PM CDT	Special Weather Statement	LBF	Logan	43 min
Aug 31, 5:47 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Thomas	28 min
Aug 31, 6:19 PM CDT	Special Weather Statement	LBF	Logan	26 min
Aug 31, 6:40 PM CDT	Special Weather Statement	LBF	Deuel	50 min
Aug 31, 6:41 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Logan	34 min
Aug 31, 6:48 PM CDT	Special Weather Statement	LBF	Custer	27 min
Aug 31, 6:59 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Garden, Keith	46 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.