Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 39, NWS North Platte, NE

May 27, 2002Arthur County, McPherson County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 27, 2002, 6:27 PM MDT for Arthur County, McPherson County, Nebraska. It was in force for 48 min. 3 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: May 27, 2002, 6:27 PM MDT (00:27 UTC)
Expired: May 27, 2002, 7:15 PM MDT
In force: 48 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

Counties Arthur County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 88 km from the middle of the area, began a volume at 00:27 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
May 27, 6:45 PM MDT	Hail 0.75	Tryon, NE
May 27, 7:00 PM MDT	Thunderstorm Wind 52 E	Tryon, NE
May 27, 7:00 PM MDT	Hail 0.75	Tryon, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 27, 1:45 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
May 27, 6:00 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.5 hours before the alert went out and 86 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: 2225 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1732 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLBF 280027
SVRLBF
NEC005-117-280115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
726 PM CDT MON MAY 27 2002

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ARTHUR COUNTY IN WEST CENTRAL NEBRASKA...
  WESTERN MCPHERSON COUNTY IN WEST CENTRAL NEBRASKA...

* UNTIL 815 PM CDT(715 PM MDT)...

* AT 622 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM 13 MILES SOUTHEAST
  OF ARTHUR...MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE...

  OVER FARM AND RANGELANDS OF EASTERN ARTHUR COUNTY  
  OVER FARM AND RANGELANDS OF WESTERN MCPHERSON COUNTY 

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER IN A SMALL
INTERIOR ROOM AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST
PROTECTION.

THIS THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING
WINDS.

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

LAT...LON 4140 10173 4140 10108 4173 10110 4174 10172

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 6:33 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	57 min
May 27, 6:37 PM MDT	Tornado Warning	LBF	Hooker	38 min
May 27, 7:07 PM MDT	Severe Thunderstorm Warning	LBF	Logan, McPherson, Thomas	23 min
May 27, 7:19 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	56 min
May 27, 7:33 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Thomas	42 min
May 27, 7:45 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	60 min
May 27, 9:28 PM MDT	Severe Thunderstorm Warning	LBF	Custer	32 min
May 28, 4:41 PM MDT	Severe Thunderstorm Warning	LBF	Frontier	34 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2002 Every severe thunderstorm warning in 2002

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.