Alert archive / Nebraska / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 113, NWS Omaha, NE

June 23, 2000Cass County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 23, 2000, 6:22 PM CDT for Cass County, Nebraska. It was in force for 38 min. 1 report 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 23, 2000, 6:22 PM CDT (23:22 UTC)
Expired: Jun 23, 2000, 7:00 PM CDT
In force: 38 min
Issued by: NWS Omaha, NE
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Cass County, NE

The radar

The Omaha radar (KOAX), 45 km from the middle of the area, began a volume at 23:26 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 23, 6:23 PM CDT	Hail 1.25	Louisville, 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
Jun 23, 5:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.4 hours before the alert went out and 45 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: 2896 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 210 m²/s²
0-3 km storm-relative helicity: 170 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.

365 
WUUS53 KOAX 232322
SVROMA
NEC025-240000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
622 PM CDT FRI JUN 23 2000

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CASS COUNTY IN SOUTHEAST NEBRASKA

* UNTIL 700 PM CDT

* AT 620 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES SOUTHEAST OF LOUISVILLE...OR ABOUT 21
  MILES SOUTH OF OMAHA...MOVING EAST AT 15 MPH.

SOME LOCATIONS IN THE PATH OF THE STORM THROUGH 700 PM CDT
  INCLUDE...MURRAY...UNION...PLATTSMOUTH...

LARGE HAIL IS LIKELY WITH THIS STORM. GO TO A SAFE PLACE INSIDE YOUR
HOME OR BUSINESS. STAY AWAY FROM WINDOWS AND GLASS DOORS.

LAT...LON 4102 9635 4081 9636 4081 9585 4106 9588

POLLACK

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 4:09 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Otoe	51 min
Jun 23, 4:52 PM CDT	Tornado Warning	OAX	Otoe	23 min
Jun 23, 5:04 PM CDT	Tornado Warning	OAX	Nemaha, Otoe	26 min
Jun 23, 5:29 PM CDT	Tornado Warning	OAX	Nemaha, Otoe	31 min
Jun 23, 5:55 PM CDT	Severe Thunderstorm Warning	OAX	Otoe	50 min
Jun 23, 5:58 PM CDT	Tornado Warning	OAX	Nemaha	32 min
Jun 23, 6:27 PM CDT	Severe Thunderstorm Warning	OAX	Sarpy	48 min
Jun 23, 6:33 PM CDT	Severe Thunderstorm Warning	OAX	Nemaha	42 min
Jun 23, 6:40 PM CDT	Severe Thunderstorm Warning	OAX	Douglas	50 min
Jun 23, 6:50 PM CDT	Tornado Warning	OAX	Nemaha	25 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2000 Every severe thunderstorm warning in 2000

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.