Alert archive / Nebraska / Tornado Warnings in 2001

Tornado Warning 63, NWS Omaha, NE

July 16, 2001Antelope County, Nebraska

NWS Omaha, NE issued this tornado warning at Jul 16, 2001, 7:28 PM CDT for Antelope County, Nebraska. It was in force for 32 min. 2 reports 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: Jul 16, 2001, 7:28 PM CDT (00:28 UTC)
Expired: Jul 16, 2001, 8:00 PM CDT
In force: 32 min
Issued by: NWS Omaha, NE
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Antelope County, NE

The radar

The Omaha radar (KOAX), 170 km from the middle of the area, began a volume at 00:31 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 16, 7:36 PM CDT	Hail 1	Clearwater, NE
Jul 16, 7:52 PM CDT	Hail 1	Neligh, 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
Jul 16, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.5 hours before the alert went out and 170 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: 2587 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1316 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 14.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KOAX 170031
TOROMA

NEC003-170100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA NE
728 PM CDT MON JUL 16 2001

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  ANTELOPE COUNTY IN NORTHEAST NEBRASKA

* UNTIL 800 PM CDT

*  AT 725 PM THE SEVERE STORM WAS 33 MILES SOUTHEAST OF 
O'NEILL...MOVING SOUTHEAST AT 20 MPH.  A 718 PM CDT...A SPOTTER 
REPORTED A FUNNEL CLOUD 8 MILES NORTH OF NELIGH LOOKING WEST.  

* SOME LOCATIONS AFFECTED...
  NELIGH
  OAKDALE
  ELGIN

TAKE SHELTER IMMEDIATELY IF YOU ARE IN THE PATH OF THIS STORM.  THIS 
STORM HAS A HISTORY OF PRODUCING LARGE HAIL...DAMAGING WINDS...AND 
FUNNEL CLOUDS.

LAT...LON 4221 9826 4197 9822 4197 9789 4229 9789

ZAPOTOCNY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:48 PM CDT	Severe Thunderstorm Warning	OAX	Pierce	42 min
Jul 16, 8:09 PM CDT	Severe Thunderstorm Warning	OAX	Antelope	36 min
Jul 16, 8:13 PM CDT	Flash Flood Warning	OAX	Antelope	3 hr
Jul 16, 8:20 PM CDT	Severe Thunderstorm Warning	OAX	Madison	40 min
Jul 16, 8:28 PM CDT	Tornado Warning	OAX	Madison	32 min
Jul 16, 8:29 PM CDT	Severe Thunderstorm Warning	OAX	Pierce	46 min
Jul 16, 8:39 PM CDT	Tornado Warning	OAX	Antelope	36 min
Jul 16, 9:00 PM CDT	Severe Thunderstorm Warning	OAX	Madison	60 min
Jul 16, 9:13 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Pierce	32 min
Jul 16, 9:23 PM CDT	Severe Thunderstorm Warning	OAX	Boone	37 min
Jul 16, 9:32 PM CDT	Tornado Warning	OAX	Madison	28 min
Jul 16, 9:52 PM CDT	Severe Thunderstorm Warning	OAX	Platte	38 min
Jul 16, 9:57 PM CDT	Severe Thunderstorm Warning	OAX	Boone, Madison	33 min
Jul 16, 10:15 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Stanton	45 min
Jul 16, 11:17 PM CDT	Severe Thunderstorm Warning	OAX	Dodge, Saunders	28 min
Jul 16, 11:59 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Washington	46 min
Jul 17, 1:25 AM CDT	Severe Thunderstorm Warning	OAX	Dodge	35 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.