Alert archive / Nebraska / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 3, NWS North Platte, NE

March 23, 2017Custer County, Loup County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Mar 23, 2017, 7:46 PM CDT for Custer County, Loup County, Nebraska. It was in force for 29 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: Mar 23, 2017, 7:46 PM CDT (00:46 UTC)
Expired: Mar 23, 2017, 8:15 PM CDT
In force: 29 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Custer County, NE, Loup County, NE

The radar

The North Platte radar (KLNX), 92 km from the middle of the area, began a volume at 00:45 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 nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.8 hours before the alert went out and 101 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: 1331 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 1799 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 230 m²/s²
0-3 km storm-relative helicity: 260 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted.

065 
WUUS53 KLBF 240046
SVRLBF
NEC041-115-240115-
/O.NEW.KLBF.SV.W.0003.170324T0046Z-170324T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
746 PM CDT THU MAR 23 2017

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southwestern Loup County in north central Nebraska...
  North central Custer County in central Nebraska...

* Until 815 PM CDT

* At 745 PM CDT, a severe thunderstorm was located near Victoria
  Springs State Recreation Area, or 11 miles north of Broken Bow,
  moving northeast at 50 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Lillian, Round Valley, Walworth and Gates. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4145 9951 4151 9981 4186 9963 4176 9938
TIME...MOT...LOC 0045Z 203DEG 43KT 4157 9966 

HAIL...1.00IN
WIND...60MPH
 
$$

JWS

2 follow-up statements

698 
WWUS53 KLBF 240102
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
802 PM CDT THU MAR 23 2017

NEC041-115-240115-
/O.CON.KLBF.SV.W.0003.000000T0000Z-170324T0115Z/
Loup NE-Custer NE-
802 PM CDT THU MAR 23 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHWESTERN LOUP AND NORTH CENTRAL CUSTER COUNTIES...

At 802 PM CDT, a severe thunderstorm was located 8 miles west of
Taylor, moving northeast at 50 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

This severe thunderstorm will remain over mainly rural areas of
southwestern Loup and north central Custer Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4164 9943 4170 9971 4186 9963 4176 9938
TIME...MOT...LOC 0102Z 203DEG 43KT 4176 9955 

HAIL...1.00IN
WIND...60MPH
 
$$

JWS

333 
WWUS53 KLBF 240111
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
811 PM CDT THU MAR 23 2017

NEC041-115-240121-
/O.EXP.KLBF.SV.W.0003.000000T0000Z-170324T0115Z/
Loup NE-Custer NE-
811 PM CDT THU MAR 23 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LOUP AND NORTH
CENTRAL CUSTER COUNTIES WILL EXPIRE AT 815 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 gusty winds are still possible with
this thunderstorm.

LAT...LON 4164 9943 4170 9971 4186 9963 4176 9938
TIME...MOT...LOC 0111Z 203DEG 43KT 4174 9956 

$$

JWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 23, 7:03 PM CDT	Special Weather Statement	LBF	Custer	42 min
Mar 23, 7:19 PM CDT	Severe Thunderstorm Warning	LBF	Custer	26 min
Mar 23, 8:17 PM CDT	Severe Thunderstorm Warning	LBF	Custer	43 min
Mar 23, 8:27 PM CDT	Special Weather Statement	LBF	Logan	48 min
Mar 23, 9:08 PM CDT	Special Weather Statement	LBF	Custer	52 min
Mar 23, 9:49 PM CDT	Areal Flood Advisory	LBF	Custer	6 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 2017 Every severe thunderstorm warning in 2017

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.