Alert archive / Nebraska / Tornado Warnings in 2001

Tornado Warning 49, NWS Omaha, NE

June 13, 2001Seward County, Nebraska

NWS Omaha, NE issued this tornado warning at Jun 13, 2001, 8:00 PM CDT for Seward County, Nebraska. It was in force for 45 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 13, 2001, 8:00 PM CDT (01:00 UTC)
Expired: Jun 13, 2001, 8:45 PM CDT
In force: 45 min
Issued by: NWS Omaha, NE
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Seward County, NE

The radar

The Omaha radar (KOAX), 83 km from the middle of the area, began a volume at 00:59 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 13, 8:00 PM CDT	Hail 0.75	Beaver Crossing, 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 13, 6:15 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.0 hours before the alert went out and 82 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: 4371 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1290 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 175 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 17.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KOAX 140059
TOROMA

NEC159-140145-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA NE
800 PM CDT WED JUN 13 2001

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

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

* UNTIL 845 PM CDT

* AT 754 PM CDT...RADAR INDICATED A THUNDERSTORM WITH VERY STRONG
  ROTATION AND A POSSIBLE TORNADO 2 MILES SOUTHEAST OF SEWARD...OR
  ABOUT 21 MILES WEST OF LINCOLN...MOVING NORTHEAST AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  GARLAND AROUND 805 PM CDT
  BEE AROUND 810 PM CDT

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT THURSDAY MORNING
FOR SOUTHWESTERN IOWA AND EASTERN NEBRASKA.

LAT...LON 4075 9730 4074 9700 4102 9694 4103 9715

SKERRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 7:08 PM CDT	Tornado Warning	OAX	Colfax	22 min
Jun 13, 7:08 PM CDT	Tornado Warning	OAX	Cuming	37 min
Jun 13, 7:24 PM CDT	Tornado Warning	OAX	Seward	36 min
Jun 13, 7:27 PM CDT	Tornado Warning	OAX	Thurston, Wayne	33 min
Jun 13, 7:42 PM CDT	Tornado Warning	OAX	Cuming	48 min
Jun 13, 7:48 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Dodge	27 min
Jun 13, 8:17 PM CDT	Tornado Warning	OAX	Butler, Lancaster, Saunders, Seward	43 min
Jun 13, 8:26 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Thurston, Wayne	34 min
Jun 13, 8:44 PM CDT	Tornado Warning	OAX	Cuming	31 min
Jun 13, 8:49 PM CDT	Severe Thunderstorm Warning	OAX	Butler	31 min
Jun 13, 8:58 PM CDT	Tornado Warning	OAX	Saunders	32 min
Jun 13, 8:59 PM CDT	Tornado Warning	OAX	Jefferson	46 min
Jun 13, 9:04 PM CDT	Severe Thunderstorm Warning	OAX	Thurston	26 min
Jun 13, 9:09 PM CDT	Severe Thunderstorm Warning	OAX	Seward	21 min
Jun 13, 9:13 PM CDT	Severe Thunderstorm Warning	OAX	Colfax	32 min
Jun 13, 9:18 PM CDT	Severe Thunderstorm Warning	OAX	Butler	27 min
Jun 13, 9:27 PM CDT	Tornado Warning	OAX	Dodge, Douglas, Saunders	33 min
Jun 13, 9:27 PM CDT	Tornado Warning	OAX	Washington	33 min
Jun 13, 9:39 PM CDT	Tornado Warning	OAX	Jefferson	51 min
Jun 13, 10:03 PM CDT	Severe Thunderstorm Warning	OAX	Dodge, Saunders	42 min
Jun 13, 10:10 PM CDT	Severe Thunderstorm Warning	OAX	Seward	35 min
Jun 13, 10:28 PM CDT	Tornado Warning	OAX	Jefferson, Saline	32 min
Jun 13, 10:48 PM CDT	Severe Thunderstorm Warning	OAX	Burt	42 min
Jun 13, 10:59 PM CDT	Tornado Warning	OAX	Jefferson, Saline	46 min
Jun 13, 11:45 PM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	45 min
Jun 14, 12:04 AM CDT	Flash Flood Warning	OAX	Cuming	6 hr
Jun 14, 12:19 AM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saunders	26 min
Jun 14, 12:30 AM CDT	Severe Thunderstorm Warning	OAX	Seward	30 min
Jun 14, 12:32 AM CDT	Severe Thunderstorm Warning	OAX	Saline	28 min
Jun 14, 1:27 AM CDT	Severe Thunderstorm Warning	OAX	Saline	33 min
Jun 14, 1:31 AM CDT	Flash Flood Warning	OAX	Saline, Seward	3 hr
Jun 14, 1:40 AM CDT	Flash Flood Warning	OAX	Washington	3 hr
Jun 14, 1:57 AM CDT	Severe Thunderstorm Warning	OAX	Lancaster	33 min
Jun 14, 2:39 AM CDT	Flash Flood Warning	OAX	Jefferson	3 hr
Jun 14, 4:25 AM CDT	Flash Flood Warning	OAX	Saline, Seward	4 hr
Jun 14, 6:25 AM CDT	Flash Flood Warning	OAX	Nemaha, Richardson	4 hr

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.