Alert archive / Iowa / Tornado Warnings in 2000

Tornado Warning 35, NWS Omaha, NE

June 23, 2000Fremont County, Iowa; Otoe County, Nebraska

NWS Omaha, NE issued this tornado warning at Jun 23, 2000, 4:52 PM CDT for Fremont County, Iowa; Otoe County, Nebraska. It was in force for 23 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 23, 2000, 4:52 PM CDT (21:52 UTC)
Expired: Jun 23, 2000, 5:15 PM CDT
In force: 23 min
Issued by: NWS Omaha, NE
Area: Whole counties

Counties Fremont County, IA, Otoe County, NE

The radar

The Omaha radar (KOAX), 81 km from the middle of the area, began a volume at 21:53 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, 5:15 PM CDT	Hail 1	Nebraska City, 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

Omaha, NE (KOAX), launched 12:00Z, 9.9 hours before the alert went out and 81 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.

000 
WFUS53 KOAX 232152
TOROMA
IAC071-NEC131-232215-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA NE
452 PM CDT FRI JUN 23 2000

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  OTOE COUNTY IN SOUTHEAST NEBRASKA
  FREMONT COUNTY IN SOUTHWEST IOWA

* UNTIL 515 PM CDT

* AT 447 PM CDT...RADAR INDICATED A THUNDERSTORM WITH VERY STRONG
  ROTATION AND A DEVELOPING TORNADO 4 MILES SOUTH OF NEBRASKA CITY...
  OR ABOUT 40 MILES NORTH OF FALLS CITY...MOVING NORTHEAST AT 20 MPH.

SOME LOCATIONS IN THE PATH OF THE TORNADO THROUGH 515 PM CDT
  INCLUDE...HAMBURG...RIVERTON...SIDNEY...

THIS REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY ISSUED FOR
THE WARNED AREA.

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.

LAT...LON 4066 9599 40850 9588 4065 9545 4085 9559

FOBERT
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 11:41 AM CDT	Severe Thunderstorm Warning	OAX	Page	49 min
Jun 23, 4:09 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	51 min
Jun 23, 5:16 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	44 min
Jun 23, 5:27 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery	48 min
Jun 23, 6:40 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	50 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, 6:22 PM CDT	Severe Thunderstorm Warning	OAX	Cass	38 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, 6:50 PM CDT	Tornado Warning	OAX	Nemaha	25 min

Nearby

Tornado Warnings in Iowa, 2000 Tornado Warnings in Nebraska, 2000 Every tornado warning in 2000 Tornadoes 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.