Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 101, NWS North Platte, NE

June 29, 2001Blaine County, Brown County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 29, 2001, 6:59 PM CDT for Blaine County, Brown County, Nebraska. It was in force for 46 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Jun 29, 2001, 6:59 PM CDT (23:59 UTC)
Expired
Jun 29, 2001, 7:45 PM CDT
In force
46 min
Issued by
NWS North Platte, NE
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Blaine County, NE, Brown County, NE

The radar

The North Platte radar (KLNX), 49 km from the middle of the area, began a volume at 00:04 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

TimeReportWhereRemark
Jun 29, 7:10 PM CDTHail 1.75Ainsworth, NE
Jun 29, 7:25 PM CDTHail 0.88Brewster, 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, 12.0 hours before the alert went out and 119 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2001-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1296 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2001-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1296 J/kg
Mixed-layer CIN
-276 J/kg
Mixed-layer LCL
1476 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
137 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 292359
SVRLBF
NEC009-017-300045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
659 PM CDT FRI JUN 29 2001

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN BROWN COUNTY IN NORTH CENTRAL NEBRASKA
  NORTHERN BLAINE COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 745 PM CDT

* AT 654 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER BROWN COUNTY...OR ABOUT 12 MILES NORTHWEST
  OF BREWSTER...MOVING EAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE...

  OVER FARM AND RANGELANDS OF SOUTHERN BROWN COUNTY
  OVER FARM AND RANGELANDS OF NORTHERN BLAINE 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY
EVENING FOR WESTERN NEBRASKA.

LAT...LON 4218 10016 4209 10016 4202 10027 4197 9969
          4221 9967

$$

AWJ

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 4:34 AM CDTSevere Thunderstorm WarningLBFHolt41 min
Jun 29, 1:31 PM CDTSevere Thunderstorm WarningLBFDeuel, Garden59 min
Jun 29, 1:58 PM CDTTornado WarningLBFDeuel, Garden32 min
Jun 29, 3:34 PM CDTSevere Thunderstorm WarningLBFMcPherson41 min
Jun 29, 3:47 PM CDTSevere Thunderstorm WarningLBFArthur58 min
Jun 29, 4:19 PM CDTSevere Thunderstorm WarningLBFKeith56 min
Jun 29, 4:44 PM CDTSevere Thunderstorm WarningLBFArthur61 min
Jun 29, 5:00 PM CDTSevere Thunderstorm WarningLBFLincoln, McPherson60 min
Jun 29, 5:13 PM CDTSevere Thunderstorm WarningLBFHooker, McPherson62 min
Jun 29, 5:24 PM CDTSevere Thunderstorm WarningLBFGrant51 min
Jun 29, 5:35 PM CDTSevere Thunderstorm WarningLBFLogan55 min
Jun 29, 5:46 PM CDTSevere Thunderstorm WarningLBFCherry44 min
Jun 29, 6:14 PM CDTSevere Thunderstorm WarningLBFHooker, Thomas61 min
Jun 29, 6:21 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Cherry39 min
Jun 29, 6:26 PM CDTSevere Thunderstorm WarningLBFCuster64 min
Jun 29, 6:52 PM CDTSevere Thunderstorm WarningLBFCherry53 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2001Every severe thunderstorm warning in 2001

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.