Alert archive / Nebraska / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS North Platte, NE

April 14, 2017Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 14, 2017, 10:43 PM CDT for Custer County, Nebraska. It was in force for 32 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: Apr 14, 2017, 10:43 PM CDT (03:43 UTC)
Expired: Apr 14, 2017, 11:15 PM CDT
In force: 32 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

County Custer County, NE

The radar

The North Platte radar (KLNX), 118 km from the middle of the area, began a volume at 03:43 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
Apr 14, 10:46 PM CDT	HAIL 1.25	17 Ne Broken Bow, NE

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
Apr 14, 6:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.7 hours before the alert went out and 117 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: 484 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 2217 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 271 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

As transmitted.

646 
WUUS53 KLBF 150343
SVRLBF
NEC041-150415-
/O.NEW.KLBF.SV.W.0013.170415T0343Z-170415T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
1043 PM CDT FRI APR 14 2017

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northeastern Custer County in central Nebraska...

* Until 1115 PM CDT

* At 1043 PM CDT, a severe thunderstorm was located near Weissert, or
  15 miles east of Broken Bow, moving northeast at 30 mph.

  HAZARD...Half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* Locations impacted include...
  Sargent, Comstock, Weissert, Westerville, Big Oak Canyon, Arcadia
  Diversion Dam State Wildlife Management Area and Wescott.

This includes Highway 183 between mile markers 96 and 116.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4136 9925 4137 9953 4167 9936 4167 9922
      4165 9921 4140 9921
TIME...MOT...LOC 0343Z 214DEG 26KT 4144 9935 

HAIL...1.25IN
WIND...<50MPH
 
$$

Snively

2 follow-up statements

027 
WWUS53 KLBF 150356
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1056 PM CDT FRI APR 14 2017

NEC041-150415-
/O.CON.KLBF.SV.W.0013.000000T0000Z-170415T0415Z/
Custer NE-
1056 PM CDT FRI APR 14 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR NORTHEASTERN CUSTER COUNTY...

At 1056 PM CDT, a severe thunderstorm was located near Comstock, or
18 miles south of Taylor, moving northeast at 30 mph.

HAZARD...Half dollar size hail. 

SOURCE...Trained weather spotters. 

IMPACT...Damage to vehicles is expected. 

Locations impacted include...
Comstock, Arcadia Diversion Dam State Wildlife Management Area,
Wescott and Big Oak Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4141 9940 4167 9933 4167 9922 4165 9921
      4140 9921
TIME...MOT...LOC 0356Z 214DEG 26KT 4152 9928 

HAIL...1.25IN
WIND...<50MPH
 
$$

Snively

727 
WWUS53 KLBF 150412
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1112 PM CDT FRI APR 14 2017

NEC041-150422-
/O.EXP.KLBF.SV.W.0013.000000T0000Z-170415T0415Z/
Custer NE-
1112 PM CDT FRI APR 14 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CUSTER COUNTY
WILL EXPIRE AT 1115 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A severe thunderstorm watch remains in effect until midnight CDT for
central Nebraska.

LAT...LON 4141 9940 4167 9933 4167 9922 4165 9921
      4140 9921
TIME...MOT...LOC 0412Z 214DEG 26KT 4161 9920 

$$

Snively

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:44 PM CDT	Special Weather Statement	LBF	Custer	46 min
Apr 14, 8:08 PM CDT	Severe Thunderstorm Warning	LBF	Custer	37 min
Apr 14, 8:22 PM CDT	Special Weather Statement	LBF	Garfield	38 min
Apr 14, 8:48 PM CDT	Special Weather Statement	LBF	Custer	42 min
Apr 14, 8:50 PM CDT	Special Weather Statement	LBF	Loup	40 min
Apr 14, 9:01 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup	59 min
Apr 14, 9:17 PM CDT	Areal Flood Advisory	LBF	Custer	3 hr
Apr 14, 9:28 PM CDT	Special Weather Statement	LBF	Custer	47 min
Apr 14, 9:39 PM CDT	Severe Thunderstorm Warning	LBF	Custer	51 min
Apr 14, 10:00 PM CDT	Special Weather Statement	LBF	Valley	30 min
Apr 14, 10:04 PM CDT	Special Weather Statement	LBF	Garden	41 min
Apr 14, 10:12 PM CDT	Areal Flood Advisory	LBF	Custer	3 hr
Apr 14, 10:13 PM CDT	Special Weather Statement	LBF	Custer	47 min
Apr 14, 10:26 PM CDT	Special Weather Statement	LBF	Custer	49 min
Apr 14, 11:22 PM CDT	Special Weather Statement	LBF	Loup	53 min
Apr 15, 12:17 AM CDT	Special Weather Statement	LBF	Garfield	43 min
Apr 15, 12:39 AM CDT	Special Weather Statement	LBF	Lincoln	66 min
Apr 15, 1:05 AM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan	40 min
Apr 15, 1:22 AM CDT	Areal Flood Advisory	LBF	Custer, Loup	5 hr
Apr 15, 1:44 AM CDT	Special Weather Statement	LBF	Custer	46 min
Apr 15, 1:54 AM CDT	Special Weather Statement	LBF	Holt	66 min
Apr 15, 2:19 AM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	23 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.