Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 74, NWS North Platte, NE

June 15, 2002Grant County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 15, 2002, 8:10 AM MDT for Grant County, Nebraska. It was in force for 35 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: Jun 15, 2002, 8:10 AM MDT (14:10 UTC)
Expired: Jun 15, 2002, 8:45 AM MDT
In force: 35 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Grant County, NE

The radar

The North Platte radar (KLNX), 93 km from the middle of the area, began a volume at 14:12 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
Jun 15, 8:12 AM MDT	Hail 0.75	Hyannis, NE
Jun 15, 8:28 AM MDT	Hail 1	Hyannis, 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 12:00Z, 2.2 hours before the alert went out and 130 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2065 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 124 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.

000 
WUUS53 KLBF 151410
SVRLBF
NEC075-151445-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
810 AM MDT SAT JUN 15 2002

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 845 AM MDT...

* AT 807 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM 3 MILES SOUTHEAST
  OF HYANNIS...OR ABOUT 50 MILES NORTHEAST OF OSHKOSH...MOVING
  SOUTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE...

  OVER FARM AND RANGELANDS OF GRANT 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.

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

LAT...LON 4208 10169 4205 10200 4177 10195 4177 10144
          4200 10144

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 5:21 AM MDT	Severe Thunderstorm Warning	LBF	Sheridan	54 min
Jun 15, 8:34 AM MDT	Severe Thunderstorm Warning	LBF	Arthur, McPherson	41 min
Jun 15, 9:08 AM MDT	Severe Thunderstorm Warning	LBF	McPherson	37 min
Jun 15, 9:46 AM MDT	Severe Thunderstorm Warning	LBF	Lincoln	59 min
Jun 15, 10:13 AM MDT	Severe Thunderstorm Warning	LBF	Lincoln	32 min
Jun 15, 10:45 AM MDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	60 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.