Alert archive / Nebraska / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 285, NWS North Platte, NE

September 4, 2016Arthur County, Grant County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Sep 4, 2016, 5:48 PM MDT for Arthur County, Grant County, Nebraska. It was in force for 42 min. 2 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: Sep 4, 2016, 5:48 PM MDT (23:48 UTC)
Expired: Sep 4, 2016, 6:30 PM MDT
In force: 42 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Arthur County, NE, Grant County, NE

The radar

The North Platte radar (KLNX), 97 km from the middle of the area, began a volume at 23:50 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
Sep 4, 6:00 PM MDT	TSTM WND GST 60	6 Nnw Arthur, NE
Sep 4, 6:35 PM MDT	TSTM WND GST 60	6 Se Whitman, NE	TREES BENDING OVER WITH SMALL LIMBS BROKEN OFF

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
Sep 4, 2:24 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.8 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: 89 J/kg
Mixed-layer CIN: -363 J/kg
Mixed-layer LCL: 945 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

471 
WUUS53 KLBF 042348
SVRLBF
NEC005-075-050030-
/O.NEW.KLBF.SV.W.0285.160904T2348Z-160905T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
548 PM MDT SUN SEP 4 2016

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ARTHUR COUNTY IN WEST CENTRAL NEBRASKA...
  GRANT COUNTY IN WEST CENTRAL NEBRASKA...

* UNTIL 630 PM MDT

* AT 546 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ARTHUR...
  MOVING NORTH 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...
  ARTHUR...HYANNIS...JENSEN LAKE...COGILL LAKE...HAYTHORN LAKE...
  CARR LAKE...PRATT LAKE...VELMA...SPRING VALLEY LAKE...DULUTH...
  SAND PUDDIN LAKE...GREEN LAKE AND MCKEAG.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 2 BETWEEN MILE MARKERS 139 AND 158.
 HIGHWAY 61 BETWEEN MILE MARKERS 110 AND 162.
 HIGHWAY 92 BETWEEN MILE MARKERS 165 AND 169.

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.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
PONDING AND FLOODING OF LOW LYING SPOTS.

&&

LAT...LON 4207 10189 4202 10142 4192 10142 4139 10168
      4139 10173 4146 10199
TIME...MOT...LOC 2346Z 197DEG 45KT 4158 10181 

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

ET

1 follow-up statement

554 
WWUS53 KLBF 050020
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
620 PM MDT SUN SEP 4 2016

NEC005-075-050030-
/O.CON.KLBF.SV.W.0285.000000T0000Z-160905T0030Z/
ARTHUR NE-GRANT NE-
620 PM MDT SUN SEP 4 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR ARTHUR AND GRANT COUNTIES...

AT 620 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES SOUTH OF
WHITMAN...OR 24 MILES NORTH OF ARTHUR...MOVING NORTHEAST AT 60 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...
ARTHUR...HYANNIS...JENSEN LAKE...COGILL LAKE...HAYTHORN LAKE...
CARR LAKE...PRATT LAKE...VELMA...SPRING VALLEY LAKE...DULUTH...
SAND PUDDIN LAKE...GREEN LAKE AND MCKEAG.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 2 BETWEEN MILE MARKERS 139 AND 158.
 HIGHWAY 61 BETWEEN MILE MARKERS 110 AND 162.
 HIGHWAY 92 BETWEEN MILE MARKERS 165 AND 169.

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.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4207 10189 4202 10142 4192 10142 4139 10168
      4139 10173 4146 10199
TIME...MOT...LOC 0020Z 204DEG 51KT 4192 10157 

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

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 3, 6:17 PM MDT	Special Weather Statement	LBF	Garden, Keith, Perkins	43 min
Sep 3, 7:22 PM MDT	River Flood Advisory	LBF	Lincoln	7 days
Sep 4, 2:35 PM MDT	Special Weather Statement	LBF	Sheridan	40 min
Sep 4, 3:50 PM MDT	Severe Thunderstorm Warning	LBF	Chase	40 min
Sep 4, 4:25 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	35 min
Sep 4, 4:30 PM MDT	Special Weather Statement	LBF	Garden	45 min
Sep 4, 4:56 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden, Keith, Perkins	34 min
Sep 4, 5:06 PM MDT	Special Weather Statement	LBF	Sheridan	39 min
Sep 4, 5:11 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	49 min
Sep 4, 5:21 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Keith	24 min
Sep 4, 5:28 PM MDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	47 min
Sep 4, 5:41 PM MDT	Special Weather Statement	LBF	Sheridan	49 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2016 Every severe thunderstorm warning in 2016

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.