Alert archive / Nebraska / Tornado Warnings in 2001

Tornado Warning 67, NWS Omaha, NE

July 17, 2001Dodge County, Nebraska

NWS Omaha, NE issued this tornado warning at Jul 17, 2001, 10:14 PM CDT for Dodge County, Nebraska. It was in force for 31 min. 3 reports 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: Jul 17, 2001, 10:14 PM CDT (03:14 UTC)
Expired: Jul 17, 2001, 10:45 PM CDT
In force: 31 min
Issued by: NWS Omaha, NE
Area: Whole counties

County Dodge County, NE

The radar

The Omaha radar (KOAX), 37 km from the middle of the area, began a volume at 03:16 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
Jul 17, 10:15 PM CDT	Hail 1.75	Nickerson, NE	Hail as large as golfball size fell to the northeast of Fremont. The hail caused a significant amount of crop damage according to a local Co-op manager.
Jul 17, 10:20 PM CDT	Hail 1.75	Fremont, NE
Jul 17, 10:20 PM CDT	Thunderstorm Wind 53 M	Fremont, NE	A supercell thunderstorm produced large hail and damaging winds across a large part of Fremont. Most of the damage was caused by large trees and tree limbs that were broken or uprooted. The wind was measured at 61 mph at the Awos in Fremont, but much stronge

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
Jul 17, 10:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 3.2 hours before the alert went out and 37 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: 3248 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 1677 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 40.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KOAX 180315
TOROMA

NEC053-180345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA NE
1014 PM CDT TUE JUL 17 2001

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEAST DODGE COUNTY IN EAST CENTRAL NEBRASKA

* UNTIL 1045 PM CDT

* AT 1011 PM CDT...RADAR INDICATED A THUNDERSTORM WITH VERY STRONG
  ROTATION AND A DEVELOPING TORNADO JUST NORTHWEST OF
  FREMONT...OR ABOUT 29 MILES NORTHWEST OF OMAHA...MOVING 
  SOUTHEAST AT 20 MPH.

THIS REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY ISSUED FOR
EASTERN DODGE COUNTY.  

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

$$

LAT...LON 4153 9648 4145 9664 4137 9654 4131 9646
          4143 9646

DDN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 9:17 PM CDT	Severe Thunderstorm Warning	OAX	Dodge	43 min
Jul 17, 9:59 PM CDT	Severe Thunderstorm Warning	OAX	Dodge, Washington	61 min
Jul 17, 10:30 PM CDT	Severe Thunderstorm Warning	OAX	Douglas	45 min
Jul 17, 10:45 PM CDT	Tornado Warning	OAX	Douglas	45 min
Jul 17, 10:58 PM CDT	Severe Thunderstorm Warning	OAX	Washington	32 min
Jul 17, 11:12 PM CDT	Severe Thunderstorm Warning	OAX	Sarpy	48 min
Jul 18, 6:55 PM CDT	Severe Thunderstorm Warning	OAX	Jefferson	50 min

Nearby

Tornado Warnings in Nebraska, 2001 Every tornado warning in 2001 Tornadoes 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.