Alert archive / Nebraska / Tornado Warnings in 2002

Tornado Warning 11, NWS Omaha, NE

June 12, 2002Cass County, Nebraska

NWS Omaha, NE issued this tornado warning at Jun 12, 2002, 5:01 PM CDT for Cass County, Nebraska. It was in force for 29 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 12, 2002, 5:01 PM CDT (22:01 UTC)
Expired
Jun 12, 2002, 5:30 PM CDT
In force
29 min
Issued by
NWS Omaha, NE
Area
Counties, with a storm outline in the text

County Cass County, NE

The radar

The Omaha radar (KOAX), 46 km from the middle of the area, began a volume at 22:05 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 12, 5:37 PM CDTHail 1Murray, NE
Jun 12, 5:37 PM CDTThunderstorm Wind 60 EMurray, NEThunderstorm wind gusts estimated at around 70 mph broke several large trees in half around town. Quarter size hail also accompanied the storm.

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.

IssuedProductOfficeLasted
Jun 12, 12:30 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 12, 4:15 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.0 hours before the alert went out and 46 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, Omaha, NE at 12:00Z on 2002-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2034 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, Omaha, NE at 12:00Z on 2002-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 square meters per square second.1939587897Sfc1 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
2034 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
700 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
-0.5
Supercell composite
-2.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KOAX 122201
TOROMA
NEC025-122230-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA NE
459 PM CDT WED JUN 12 2002

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  CASS COUNTY IN SOUTHEAST NEBRASKA

* UNTIL 530 PM CDT

* AT 455 PM CDT...RADAR INDICATED A SEVERE STORM WITH VERY STRONG
  ROTATION AND A POSSIBLE TORNADO. THE MOST DANGEROUS PART OF THE
  STORM WAS LOCATED 4 MILES WEST OF MURDOCK...OR ABOUT 19 MILES 
  NORTHEAST OF LINCOLN...MOVING EAST AT 20 MPH.

* SOME LOCATIONS AFFECTED...
  SOUTH BEND
  MANLEY...LOUISVILLE
  MURRAY...PLATTSMOUTH

IF YOU ARE IN THE PATH OF A TORNADO...GO TO A BASEMENT. IF A BASEMENT
IS NOT AVAILABLE...TAKE COVER IN AN INTERIOR ROOM ON THE LOWEST LEVEL
OF YOUR HOME OR BUSINESS. AVOID WINDOWS.

IN ADDITION TO THE TORNADO THREAT...GOLFBALL SIZE HAIL AND STRAIGHT 
LINE WINDS TO 70 MPH ARE LIKELY.

TAKE COVER NOW IN A BASEMENT OR AN INTERIOR ROOM. IN ADDITION TO THE
TORNADO THREAT...LARGE HAIL AND DAMAGING WIND ARE EXPECTED.

LAT...LON 4099 9633 4085 9638 4083 9588 4104 9589

MEAD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 7:27 PM CDTSevere Thunderstorm WarningOAXJefferson33 min
Jun 11, 7:48 PM CDTSevere Thunderstorm WarningOAXGage27 min
Jun 11, 8:14 PM CDTSevere Thunderstorm WarningOAXGage31 min
Jun 12, 3:48 PM CDTSevere Thunderstorm WarningOAXSarpy, Saunders27 min
Jun 12, 3:52 PM CDTSevere Thunderstorm WarningOAXLancaster, Seward38 min
Jun 12, 4:31 PM CDTSevere Thunderstorm WarningOAXCass, Lancaster, Saunders29 min
Jun 12, 4:38 PM CDTSevere Thunderstorm WarningOAXPlatte37 min
Jun 12, 4:53 PM CDTTornado WarningOAXButler, Platte37 min
Jun 12, 5:29 PM CDTSevere Thunderstorm WarningOAXButler31 min
Jun 12, 5:30 PM CDTSevere Thunderstorm WarningOAXCass30 min
Jun 12, 5:53 PM CDTSevere Thunderstorm WarningOAXDodge, Saunders37 min
Jun 12, 5:58 PM CDTSevere Thunderstorm WarningOAXSeward32 min
Jun 12, 6:00 PM CDTSevere Thunderstorm WarningOAXButler30 min
Jun 12, 6:17 PM CDTTornado WarningOAXSeward28 min
Jun 12, 6:31 PM CDTSevere Thunderstorm WarningOAXLancaster, Saunders29 min
Jun 12, 6:45 PM CDTSevere Thunderstorm WarningOAXSaline, Seward30 min
Jun 12, 6:57 PM CDTSevere Thunderstorm WarningOAXBurt, Washington33 min

Nearby

Tornado Warnings in Nebraska, 2002Every tornado warning in 2002Tornadoes 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.