Alert archive / Iowa / Tornado Warnings in 2003

Tornado Warning 5, NWS Omaha, NE

May 4, 2003Fremont County, Iowa

NWS Omaha, NE issued this tornado warning at May 4, 2003, 4:45 PM CDT for Fremont County, Iowa. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 4, 2003, 4:45 PM CDT (21:45 UTC)
Expired: May 4, 2003, 5:30 PM CDT
In force: 45 min
Issued by: NWS Omaha, NE
Area: Counties, with a storm outline in the text

County Fremont County, IA

The radar

The Omaha radar (KOAX), 85 km from the middle of the area, began a volume at 21:47 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 4, 12:45 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.8 hours before the alert went out and 85 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: 558 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 375 m²/s²
0-3 km storm-relative helicity: 509 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.

153 
WFUS53 KOAX 042145
TOROAX
IAC071-042230-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA NE
444 PM CDT SUN MAY 4 2003

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  FREMONT COUNTY IN SOUTHWEST IOWA

* UNTIL 530 PM CDT

* AT 442 PM CDT...RADAR INDICATED A SEVERE STORM WITH A POSSIBLE
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS LOCATED OVER
  THURMAN...OR ABOUT 34 MILES SOUTH OF OMAHA...MOVING NORTHEAST AT 35
  MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  TABOR AROUND 450 PM CDT
  RANDOLPH AROUND 455 PM CDT
  IMOGENE AROUND 505 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 600 PM CDT SUNDAY EVENING FOR
SOUTHEAST NEBRASKA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 700
PM CDT SUNDAY EVENING FOR SOUTHWEST IOWA AND SOUTHEASTERN NEBRASKA.

LAT...LON 4070 9579 4087 9583 4090 9542 4075 9541

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 3:57 AM CDT	Severe Thunderstorm Warning	OAX	Fremont	33 min
May 4, 4:02 AM CDT	Severe Thunderstorm Warning	OAX	Page	43 min
May 4, 4:12 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	63 min
May 4, 4:19 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	26 min
May 4, 4:21 PM CDT	Tornado Warning	OAX	Mills, Pottawattamie	54 min
May 4, 5:14 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	31 min
May 4, 5:24 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	51 min
May 4, 5:46 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery	29 min

Nearby

Tornado Warnings in Iowa, 2003 Every tornado warning in 2003 Tornadoes in 2003

Sources

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