Alert archive / Nebraska / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 252, NWS North Platte, NE

August 4, 2015Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 4, 2015, 1:30 PM CDT for Lincoln County, Nebraska. It was in force for 45 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: Aug 4, 2015, 1:30 PM CDT (18:30 UTC)
Expired: Aug 4, 2015, 2:15 PM CDT
In force: 45 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Lincoln County, NE

The radar

The North Platte radar (KLNX), 127 km from the middle of the area, began a volume at 18:23 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 12:00Z, 6.5 hours before the alert went out and 36 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: 983 J/kg
Mixed-layer CIN: -213 J/kg
Mixed-layer LCL: 899 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

602 
WUUS53 KLBF 041830
SVRLBF
NEC111-041915-
/O.NEW.KLBF.SV.W.0252.150804T1830Z-150804T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
130 PM CDT TUE AUG 4 2015

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN LINCOLN COUNTY IN SOUTHWESTERN NEBRASKA...

* UNTIL 215 PM CDT

* AT 129 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES EAST OF
  WELLFLEET...OR 10 MILES NORTH OF CURTIS...MOVING NORTHEAST AT 15
  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...
  JEFFREY CANYON STATE WILDLIFE MANAGEMENT AREA...HANSEN MEMORIAL
  RESERVE STATE WILDLIFE MANAGEMENT AREA...WELLFLEET AND COTTONWOOD
  CANYON STATE WILDLIFE MANAGEMENT AREA.

THIS INCLUDES HIGHWAY 83 BETWEEN MILE MARKERS 53 AND 56.
 
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 4071 10077 4103 10055 4090 10023 4085 10022
      4071 10030
TIME...MOT...LOC 1829Z 229DEG 12KT 4078 10057 

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

JWS

2 follow-up statements

771 
WWUS53 KLBF 041853
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
153 PM CDT TUE AUG 4 2015

NEC111-041915-
/O.CON.KLBF.SV.W.0252.000000T0000Z-150804T1915Z/
LINCOLN NE-
153 PM CDT TUE AUG 4 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM CDT
FOR SOUTHEASTERN LINCOLN COUNTY...

AT 153 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 10 MILES NORTHWEST
OF MOOREFIELD...OR 13 MILES NORTH OF CURTIS...MOVING NORTHEAST AT 15
MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS INCLUDES HIGHWAY 83 BETWEEN MILE MARKERS 53 AND 56.
 
LOCATIONS IMPACTED INCLUDE...
JEFFREY CANYON STATE WILDLIFE MANAGEMENT AREA...HANSEN MEMORIAL
RESERVE STATE WILDLIFE MANAGEMENT AREA...WELLFLEET AND COTTONWOOD
CANYON STATE WILDLIFE MANAGEMENT AREA.

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 4071 10077 4103 10055 4090 10023 4085 10022
      4071 10030
TIME...MOT...LOC 1853Z 231DEG 15KT 4083 10049 

HAIL...1.00IN
WIND...<50MPH
 
$$

JWS

196 
WWUS53 KLBF 041913
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
213 PM CDT TUE AUG 4 2015

NEC111-041922-
/O.EXP.KLBF.SV.W.0252.000000T0000Z-150804T1915Z/
LINCOLN NE-
213 PM CDT TUE AUG 4 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LINCOLN COUNTY
WILL EXPIRE AT 215 PM CDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER HEAVY RAIN
IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4071 10077 4103 10055 4090 10023 4085 10022
      4071 10030
TIME...MOT...LOC 1910Z 229DEG 12KT 4083 10049 

$$

JWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 11:37 PM CDT	Special Weather Statement	LBF	Keya Paha	38 min
Aug 4, 12:54 AM CDT	Special Weather Statement	LBF	Keya Paha, Rock	66 min
Aug 4, 2:44 AM CDT	Special Weather Statement	LBF	Boyd, Holt, Keya Paha, Rock	46 min
Aug 4, 3:39 AM CDT	Special Weather Statement	LBF	Boyd, Holt, Keya Paha, Rock	96 min
Aug 4, 10:54 AM CDT	Special Weather Statement	LBF	Keith	51 min
Aug 4, 11:21 AM CDT	Special Weather Statement	LBF	Deuel	39 min
Aug 4, 12:30 PM CDT	Special Weather Statement	LBF	Chase, Perkins	45 min
Aug 4, 12:33 PM CDT	Special Weather Statement	LBF	Lincoln	42 min
Aug 4, 12:41 PM CDT	Severe Thunderstorm Warning	LBF	Chase	34 min
Aug 4, 1:01 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	29 min
Aug 4, 2:18 PM CDT	Areal Flood Advisory	LBF	Lincoln	3 hr
Aug 4, 2:31 PM CDT	Areal Flood Advisory	LBF	Frontier, Hayes	3 hr
Aug 4, 2:57 PM CDT	Areal Flood Advisory	LBF	Lincoln	3 hr
Aug 4, 3:03 PM CDT	Special Weather Statement	LBF	Frontier	42 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2015 Every severe thunderstorm warning in 2015

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.