Alert archive / Nebraska / Tornado Warnings in 2018

Tornado Warning 15, NWS North Platte, NE

July 18, 2018Loup County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 18, 2018, 7:12 PM CDT for Loup County, Nebraska. It was in force for 48 min. 5 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 18, 2018, 7:12 PM CDT (00:12 UTC)
Expired: Jul 18, 2018, 8:00 PM CDT
In force: 48 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

County Loup County, NE

The radar

The North Platte radar (KLNX), 91 km from the middle of the area, began a volume at 00:10 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 18, 7:16 PM CDT	TSTM WND GST 60	7 Ne Almeria, NE
Jul 18, 7:16 PM CDT	HAIL 1.75	7 Ne Almeria, NE
Jul 18, 7:16 PM CDT	HAIL 2	13 Nnw Taylor, NE
Jul 18, 7:25 PM CDT	HAIL 1.25	4 Ne Taylor, NE
Jul 18, 7:40 PM CDT	TSTM WND GST 62	3 N Taylor, NE	DIME SIZE HAIL ALSO OBSERVED

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 18, 6:14 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.2 hours before the alert went out and 126 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: 1653 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1532 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

As transmitted.

313 
WFUS53 KLBF 190012
TORLBF
NEC115-190100-
/O.NEW.KLBF.TO.W.0015.180719T0012Z-180719T0100Z/

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

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Southern Loup County in north central Nebraska...

* Until 800 PM CDT.
    
* At 712 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 13 miles northwest of Calamus Reservoir State
  Recreation Area, or 13 miles northwest of Taylor, moving southeast
  at 25 mph.

  HAZARD...Tornado and golf ball 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...
  Taylor around 745 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Horseshoe Bend Lake, Kent Diversion Dam State Wildlife Management
Area and Almeria.

This includes Highway 183 between mile markers 123 and 136, and
between mile markers 138 and 140.
 
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 4200 9959 4200 9943 4175 9923 4175 9957
TIME...MOT...LOC 0012Z 330DEG 20KT 4195 9950 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Snively

3 follow-up statements

351 
WWUS53 KLBF 190031
SVSLBF

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

NEC115-190100-
/O.CON.KLBF.TO.W.0015.000000T0000Z-180719T0100Z/
Loup NE-
731 PM CDT WED JUL 18 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
SOUTHEASTERN LOUP COUNTY...
    
At 730 PM CDT, a severe thunderstorm capable of producing a tornado 
was located about 5 miles northwest of Taylor, moving southeast at 
25 mph.

HAZARD...Tornado and golf ball 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...
  Taylor around 750 PM CDT.

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

This includes Highway 183 between mile markers 123 and 135.
 
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.

If on or near Calamus Reservoir, get away from the water and move to 
safe shelter immediately! Do not be caught on the water in a 
thunderstorm.

&&

LAT...LON 4194 9952 4194 9938 4175 9923 4175 9952
TIME...MOT...LOC 0030Z 330DEG 20KT 4186 9943 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Snively

390 
WWUS53 KLBF 190046
SVSLBF

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

NEC115-190100-
/O.CON.KLBF.TO.W.0015.000000T0000Z-180719T0100Z/
Loup NE-
746 PM CDT WED JUL 18 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
SOUTHEASTERN LOUP COUNTY...
    
At 746 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Taylor, moving southeast at 25 mph.

HAZARD...Tornado and golf ball 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 Loup County, including the following locations... Kent
Diversion Dam State Wildlife Management Area.

This includes Highway 183 between mile markers 123 and 131.
 
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.

If on or near Calamus Reservoir, get away from the water and move to 
safe shelter immediately! Do not be caught on the water in a 
thunderstorm.

&&

LAT...LON 4187 9945 4188 9933 4175 9923 4175 9946
TIME...MOT...LOC 0046Z 330DEG 20KT 4178 9937 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Snively

684 
WWUS53 KLBF 190057
SVSLBF

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

NEC115-190106-
/O.EXP.KLBF.TO.W.0015.000000T0000Z-180719T0100Z/
Loup NE-
757 PM CDT WED JUL 18 2018

...THE TORNADO WARNING FOR SOUTHEASTERN LOUP COUNTY WILL EXPIRE AT
800 PM CDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.  

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

Remember, a Severe Thunderstorm Warning still remains in effect for
portions of Loup, Garfield, and Custer Counties until 815 PM CDT.

LAT...LON 4187 9945 4188 9933 4175 9923 4175 9946
TIME...MOT...LOC 0056Z 330DEG 20KT 4174 9934 

$$

Snively

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 7:02 PM CDT	Special Weather Statement	LBF	Garfield	43 min
Jul 18, 7:06 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	39 min
Jul 18, 7:42 PM CDT	Severe Thunderstorm Warning	LBF	Custer	33 min
Jul 18, 7:53 PM CDT	Special Weather Statement	LBF	Holt	67 min
Jul 18, 7:54 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup	21 min
Jul 18, 8:04 PM CDT	Special Weather Statement	LBF	Sherman	41 min
Jul 18, 8:10 PM CDT	Severe Thunderstorm Warning	LBF	Holt	50 min
Jul 18, 8:19 PM CDT	Special Weather Statement	LBF	Garfield	41 min
Jul 18, 8:41 PM CDT	Special Weather Statement	LBF	Loup	49 min
Jul 18, 9:00 PM CDT	Severe Thunderstorm Warning	LBF	Holt	45 min
Jul 18, 10:15 PM CDT	Special Weather Statement	LBF	Holt	45 min
Jul 18, 10:52 PM CDT	Special Weather Statement	LBF	Holt	38 min
Jul 18, 11:05 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Wheeler	25 min
Jul 18, 11:27 PM CDT	Special Weather Statement	LBF	Wheeler	33 min
Jul 19, 12:00 AM CDT	Special Weather Statement	LBF	Wheeler	30 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.