Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 61, NWS North Platte, NE

June 7, 2002Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 7, 2002, 6:31 PM CDT for Holt County, Nebraska. It was in force for 59 min. 1 report 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 7, 2002, 6:31 PM CDT (23:31 UTC)
Expired: Jun 7, 2002, 7:30 PM CDT
In force: 59 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Holt County, NE

The radar

The North Platte radar (KLNX), 148 km from the middle of the area, began a volume at 23:30 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 7, 6:50 PM CDT	Hail 0.75	Ewing, 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 7, 5:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.5 hours before the alert went out and 196 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: 463 J/kg
Mixed-layer CIN: -514 J/kg
Mixed-layer LCL: 1754 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 195 m²/s²
0-3 km storm-relative helicity: 193 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 072331
SVRLBF
NEC089-080030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
628 PM CDT FRI JUN 7 2002

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 730 PM CDT...

* AT 625 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM 11 MILES WEST OF
  EWING...OR ABOUT 19 MILES SOUTH OF ONEILL...MOVING EAST AT 20 MPH.
  ANOTHER POSSIBLY SEVERE THUNDERSTORM WAS LOCATED 10 MILES          
  SOUTHWEST OF ONEILL AND WAS ALSO MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE...

  3 MILES SOUTH OF EWING AROUND 640 PM CDT...

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 1100 PM CDT
FRIDAY EVENING FOR WESTERN NEBRASKA.

LAT...LON 4244 9921 4210 9921 4209 9831 4252 9833

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 7, 2:37 PM CDT, 3 hours 54 minutes earlier.

Area forecast discussion, Jun 7, 2:37 PM CDT, 3 hours 54 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
237 PM CDT FRI JUN 7 2002

EXPECT SEVERE WEATHER DEVELOPMENT LATE THIS AFTN THROUGH 06Z
SATURDAY WITH HEAVY RAIN AFTERWARDS IN THE NERN ZONES.  COMBINATION
OF SPEED SHEAR...MOISTURE...SFC FRONT AND VARIOUS DERIVED SEVERE
WEATHER INDICATORS SUGGEST A TORNADO COULD FORM WITHIN 50 MILES OF
SOUTHERN ROCK OR BROWN COUNTY LATE THIS AFTN OR EARLY THIS EVENING.
SEVERE WEATHER PATTERN SLOWLY EVOLVES INTO A HEAVY RAIN EVENT IN
NORTHEAST ZONES OVERNIGHT.

ELSEWHERE...700MB CAP...NEAR 13C AT 17Z LBF SOUNDING VERY CLOSE TO
MODEL.  CAP IS EXPECTED TO INCREASE TO 15C BY 00Z.  THIS WOULD
LIMIT STORM DEVELOPMENT ACROSS SW NEB TO ISOLD-SCT COVERAGE WITH
DAYTIME HEATING DICTATING STORM LIFE CYCLE.  HAIL AND WIND DAMAGE
THE MAIN THREATS.

BEYOND...700 MB CAP INCREASES TO 16C SAT AND CONTS STRONG THRU SUN.
LARGE SCALE TROF AND ATTENDANT DRYLINE/DRY SLOT PUSH THRU FCST AREA
SUN NIGHT.  WENT WITH 20 POP.  COUPLED JET OF YESTERDAYS AVN IS NOW
OVER SRN CANADA SO POP IS MAINLY FOR DRY LINE BULGE.

MON-FRI...AVN HAS BACK PEDDLED ON CAA.  A DRY FCST.  TEMPS ABOUT 10F
BELOW NORMAL.

.LBF...NONE.

CDC

In the hours before

Local storm report, Jun 7, 5:10 PM CDT, 1 hour 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
510 PM CDT FRI JUN 7 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0509 PM    4 SE TAYLOR               NE   .75 IN HAIL
06/07/02   LOUP

0510 PM    3 NW BURWELL              NE   .75 IN HAIL
06/07/02   GARFIELD

IZZI

Local storm report, Jun 7, 5:15 PM CDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
515 PM CDT FRI JUN 7 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0514 PM    17 S AINSWORTH            NE   .75 IN HAIL
06/07/02   BROWN

IZZI

Local storm report, Jun 7, 5:35 PM CDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
535 PM CDT FRI JUN 7 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0531 PM    14 SW ATKINSON            NE   1.00 IN HAIL
06/07/02   HOLT

0534 PM    12 N BURWELL              NE   .75 IN HAIL
06/07/02   GARFIELD

IZZI

Local storm report, Jun 7, 5:51 PM CDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
551 PM CDT FRI JUN 7 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0550 PM    3 S CHAMBERS              NE   1.75 IN HAIL
06/07/02   HOLT

IZZI

Local storm report, Jun 7, 6:09 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
609 PM CDT FRI JUN 7 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0609 PM    1 SE BURWELL              NE   .75 IN HAIL
06/07/02   GARFIELD

IZZI

Local storm report, Jun 7, 6:22 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
622 PM CDT FRI JUN 7 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0455 PM    16 NNE ROSE               NE   .75 IN HAIL
06/07/02   ROCK

0500 PM    13 S STUART             NE   .75 IN HAIL
06/07/02   HOLT

MP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 3:54 PM CDT	Severe Thunderstorm Warning	LBF	Boyd	51 min
Jun 7, 4:47 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	58 min
Jun 7, 4:49 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, McPherson	56 min
Jun 7, 4:54 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Loup	51 min
Jun 7, 5:01 PM CDT	Severe Thunderstorm Warning	LBF	Brown	29 min
Jun 7, 5:15 PM CDT	Severe Thunderstorm Warning	LBF	Custer	45 min
Jun 7, 5:25 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt	65 min
Jun 7, 6:00 PM CDT	Severe Thunderstorm Warning	LBF	Garfield	45 min
Jun 7, 6:12 PM CDT	Severe Thunderstorm Warning	LBF	Wheeler	63 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.