Alert archive / Nebraska / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 6, NWS North Platte, NE

April 18, 2000Arthur County, Garden County, Grant County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 18, 2000, 9:59 PM MDT for Arthur County, Garden County, Grant County, Nebraska. It was in force for 61 min. 5 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 18, 2000, 9:59 PM MDT (03:59 UTC)
Expired: Apr 18, 2000, 11:00 PM MDT
In force: 61 min
Issued by: NWS North Platte, NE
Area: Whole counties

Counties Arthur County, NE, Garden County, NE, Grant County, NE

The radar

The North Platte radar (KLNX), 115 km from the middle of the area, began a volume at 03:58 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
Apr 18, 10:00 PM MDT	Hail 0.88	Oshkosh, NE
Apr 18, 10:30 PM MDT	Thunderstorm Wind 52 E	Arthur, NE
Apr 18, 10:30 PM MDT	Hail 0.75	Hyannis, NE
Apr 18, 10:50 PM MDT	Thunderstorm Wind 52 E	Hyannis, NE
Apr 18, 11:00 PM MDT	Thunderstorm Wind 52 E	Arthur, NE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.0 hours before the alert went out and 127 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: 190 J/kg
Mixed-layer CIN: -459 J/kg
Mixed-layer LCL: 1554 m above ground
0-6 km bulk shear: 80 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 274 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLBF 190400
SVRLBF
NEC005-069-075-190500-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
959 PM MDT TUE APR 18 2000

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN GARDEN COUNTY IN THE PANHANDLE OF NEBRASKA
  WESTERN GRANT COUNTY IN WEST CENTRAL NEBRASKA
  NORTHWESTERN ARTHUR COUNTY IN WEST CENTRAL NEBRASKA

* UNTIL 1100 PM MDT

* AT 1000 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM ALONG A LINE EXTENDING FROM 11 MILES NORTH OF
  CRESCENT LAKE NWR TO 12 MILES EAST OF CRESCENT LAKE NWR TO 18 MILES
  WEST OF ARTHUR...OR ALONG A LINE EXTENDING FROM 28 MILES SOUTHEAST
  OF ALLIANCE TO 26 MILES NORTH OF OSHKOSH TO 18 MILES WEST OF
  ARTHUR...MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORMS WILL REMAIN OVER FARM AND RANGELAND OF...
  NORTHERN GARDEN...NORTHWESTERN ARTHUR AND WESTERN GRANT COUNTIES.

THIS THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL WHICH MAY CAUSE 
SERIOUS INJURY AND SEVERE DAMAGE TO PROPERTY. MOVE TO A STURDY 
BUILDING AND STAY AWAY FROM WINDOWS.  DAMAGING WINDS ARE ALSO LIKELY.

REPOERT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY
TO THE NATIONAL WEATHER SERVICE.

FWM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 9:14 PM MDT	Severe Thunderstorm Warning	LBF	Garden	61 min
Apr 18, 10:44 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Grant	61 min
Apr 18, 10:53 PM MDT	Severe Thunderstorm Warning	LBF	Hooker, McPherson	67 min
Apr 18, 11:05 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	55 min
Apr 18, 11:39 PM MDT	Severe Thunderstorm Warning	LBF	Logan, Thomas	66 min
Apr 18, 11:39 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	66 min
Apr 18, 11:55 PM MDT	Severe Thunderstorm Warning	LBF	Hooker, Lincoln, McPherson	35 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2000 Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.