Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 2, NWS North Platte, NE

March 18, 2012Keith County, Lincoln County, Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Mar 18, 2012, 6:06 PM MDT for Keith County, Lincoln County, Perkins County, Nebraska. It was in force for 39 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: Mar 18, 2012, 6:06 PM MDT (00:06 UTC)
Expired: Mar 18, 2012, 6:45 PM MDT
In force: 39 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Keith County, NE, Lincoln County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 133 km from the middle of the area, began a volume at 00:06 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
Mar 18, 6:15 PM MDT	HAIL 0.88	Elsie, NE
Mar 18, 6:15 PM MDT	HAIL 1.75	5 N Elsie, NE
Mar 18, 6:28 PM MDT	HAIL 0.5	2 Nw Sarben, NE
Mar 18, 6:28 PM MDT	HAIL 0.88	Sarben, NE	NICKEL SIZED HAIL REPORTED BY NERAIN OBSERVER
Mar 18, 6:28 PM MDT	HAIL 1.75	Paxton, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.1 hours before the alert went out and 69 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: 1047 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1861 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 185 m²/s²
0-3 km storm-relative helicity: 252 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

499 
WUUS53 KLBF 190006
SVRLBF
NEC101-111-135-190045-
/O.NEW.KLBF.SV.W.0002.120319T0006Z-120319T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
606 PM MDT SUN MAR 18 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN KEITH COUNTY IN SOUTHWEST NEBRASKA...
  WESTERN LINCOLN COUNTY IN SOUTHWEST NEBRASKA...
  EASTERN PERKINS COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 645 PM MDT/745 PM CDT/

* AT 601 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 10
  MILES SOUTHWEST OF GRAINTON...OR 18 MILES NORTHEAST OF IMPERIAL...
  AND MOVING NORTH AT 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PAXTON AROUND 630 PM MDT.
  SARBEN AROUND 635 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
INTERSTATE 80 MILE MARKER 140 AND INTERSTATE 80 MILE MARKER 150.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4070 10154 4137 10155 4135 10097 4070 10115
      4070 10152
TIME...MOT...LOC 0006Z 181DEG 51KT 4076 10138
WIND...HAIL 60MPH 1.00IN

$$

TAYLOR

2 follow-up statements

905 
WWUS53 KLBF 190019
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
619 PM MDT SUN MAR 18 2012

NEC101-111-135-190045-
/O.CON.KLBF.SV.W.0002.000000T0000Z-120319T0045Z/
KEITH NE-LINCOLN NE-PERKINS NE-
619 PM MDT SUN MAR 18 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
PERKINS...WESTERN LINCOLN AND EASTERN KEITH COUNTIES UNTIL 645 PM
MDT/745 PM CDT/...

AT 615 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
NORTH OF ELSIE...OR 19 MILES EAST OF GRANT...MOVING NORTH AT 65 MPH.

IN ADDITION...AT 615 PM MDT GOLF BALL SIZE HAIL WAS REPORTED 5 MILES 
NORTH OF ELSIE WITH THIS STORM.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  PAXTON AND SARBEN AROUND 630 PM MDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE
INTERSTATE 80 MILE MARKER 140 AND INTERSTATE 80 MILE MARKER 150.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4070 10154 4137 10155 4135 10097 4070 10115
      4070 10152
TIME...MOT...LOC 0019Z 182DEG 56KT 4099 10138
WIND...HAIL 60MPH 1.75IN

$$

TAYLOR

944 
WWUS53 KLBF 190032
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
632 PM MDT SUN MAR 18 2012

NEC101-111-135-190045-
/O.CON.KLBF.SV.W.0002.000000T0000Z-120319T0045Z/
KEITH NE-LINCOLN NE-PERKINS NE-
632 PM MDT SUN MAR 18 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
PERKINS...WESTERN LINCOLN AND EASTERN KEITH COUNTIES UNTIL 645 PM
MDT/745 PM CDT/...

AT 629 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
PAXTON...OR 19 MILES EAST OF OGALLALA...MOVING NORTH AT 70 MPH.

IN ADDITION...AT 630 PM MDT GOLF BALL SIZE HAIL WAS REPORTED IN 
PAXTON WITH THIS STORM.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN
KEITH...EASTERN PERKINS AND WESTERN LINCOLN COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4070 10154 4137 10155 4135 10097 4070 10115
      4070 10152
TIME...MOT...LOC 0031Z 184DEG 62KT 4119 10134
WIND...HAIL 60MPH 1.75IN

$$

TAYLOR

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 6:38 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Lincoln, McPherson	52 min
Mar 18, 6:53 PM MDT	Severe Thunderstorm Warning	LBF	Hayes, Lincoln	52 min
Mar 18, 7:05 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker, McPherson	40 min
Mar 18, 7:42 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	48 min
Mar 18, 8:04 PM MDT	Tornado Warning	LBF	Lincoln	26 min
Mar 18, 8:28 PM MDT	Tornado Warning	LBF	Lincoln, Logan, McPherson	32 min
Mar 18, 8:32 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	21 min
Mar 18, 8:43 PM MDT	Tornado Warning	LBF	Cherry	32 min
Mar 18, 9:05 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Logan, Thomas	40 min
Mar 18, 9:14 PM MDT	Tornado Warning	LBF	Cherry	16 min
Mar 19, 3:19 AM MDT	Red Flag Warning	LBF	Arthur, Cherry, Deuel, Garden, Grant, Keith and 1 more	15 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 2012 Every severe thunderstorm warning in 2012

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.