Alert archive / Nebraska / Tornado Warnings in 2004

Tornado Warning 3, NWS Omaha, NE

April 18, 2004Wayne County, Nebraska

NWS Omaha, NE issued this tornado warning at Apr 18, 2004, 5:50 PM CDT for Wayne County, Nebraska. It was in force for 30 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 18, 2004, 5:50 PM CDT (22:50 UTC)
Expired: Apr 18, 2004, 6:20 PM CDT
In force: 30 min
Issued by: NWS Omaha, NE
Area: Counties, with a storm outline in the text

County Wayne County, NE

The radar

The Omaha radar (KOAX), 129 km from the middle of the area, began a volume at 22:51 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
Apr 18, 6:02 PM CDT	TORNADO	5 W Carroll, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 18, 2:20 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 18, 4:40 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.8 hours before the alert went out and 129 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: 256 J/kg
Mixed-layer CIN: -464 J/kg
Mixed-layer LCL: 995 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 365 m²/s²
0-3 km storm-relative helicity: 406 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.

381 
WFUS53 KOAX 182250
TOROAX
NEC179-182320-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA NE
550 PM CDT SUN APR 18 2004

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

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

* UNTIL 620 PM CDT

* AT 547 PM CDT...RADAR INDICATED A SEVERE STORM WITH A POSSIBLE
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS LOCATED 2 MILES
  SOUTHWEST OF SHOLES...OR ABOUT 20 MILES NORTH OF NORFOLK...MOVING
  EAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  CARROLL AROUND 605 PM CDT
  WAYNE AROUND 615 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.

LAT...LON 4237 9737 4223 9742 4213 9700 4235 9692

$$

FOBERT/KING

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 3:44 PM CDT	Severe Thunderstorm Warning	OAX	Madison	31 min
Apr 18, 4:00 PM CDT	Severe Thunderstorm Warning	OAX	Stanton, Wayne	30 min
Apr 18, 4:45 PM CDT	Severe Thunderstorm Warning	OAX	Madison	30 min
Apr 18, 5:14 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	31 min
Apr 18, 5:26 PM CDT	Tornado Warning	OAX	Pierce	34 min
Apr 18, 5:42 PM CDT	Tornado Warning	OAX	Cedar	33 min
Apr 18, 5:57 PM CDT	Tornado Warning	OAX	Pierce	33 min
Apr 18, 5:59 PM CDT	Severe Thunderstorm Warning	OAX	Madison	31 min
Apr 18, 6:16 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	29 min
Apr 18, 6:20 PM CDT	Tornado Warning	OAX	Wayne	25 min
Apr 18, 6:29 PM CDT	Severe Thunderstorm Warning	OAX	Madison, Platte, Stanton	46 min
Apr 18, 6:46 PM CDT	Severe Thunderstorm Warning	OAX	Wayne	44 min

Nearby

Tornado Warnings in Nebraska, 2004 Every tornado warning in 2004 Tornadoes in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.