Alert archive / Iowa / Tornado Warnings in 2002
Tornado Warning 4, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at Apr 27, 2002, 4:42 PM CDT for Fremont County, Mills County, Iowa. It was in force for 33 min. 2 reports 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 27, 2002, 4:42 PM CDT (21:42 UTC)
- Expired
- Apr 27, 2002, 5:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Omaha, NE
- Area
- Counties, with a storm outline in the text
Counties Fremont County, IA, Mills County, IA
The radar
The Omaha radar (KOAX), 72 km from the middle of the area, began a volume at 21:42 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 27, 4:50 PM CDT | Tornado F0 | Thurman, IA | A brief touchdown of a tornado in open country just northeast of exit 20 on Interstate 29. The tornado was caught on film by a storm chaser. |
| Apr 27, 4:58 PM CDT | Tornado F0 | Glenwood, IA | A storm chaser reported a tornado touchdown southwest of the intersection of highways 275 and 34. The tornado was on the ground for less than 1 minute and was in an open field. It was from the same mini-supercell that produced the tornado touchdown near Thur |
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 |
|---|---|---|---|
| Apr 27, 3:30 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 9.7 hours before the alert went out and 72 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 471 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KOAX 272142 TOROMA IAC071-129-272215- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE OMAHA NE 442 PM CDT SAT APR 27 2002 THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A * TORNADO WARNING FOR... FREMONT COUNTY IN SOUTHWEST IOWA MILLS COUNTY IN SOUTHWEST IOWA * UNTIL 515 PM CDT * AT 437 PM CDT...RADAR INDICATED A TORNADIC STORM AND TRAINED STORM SPOTTERS CONFIRM A TORNADO 3 MILES SOUTHWEST OF THURMAN...OR ABOUT 35 MILES SOUTH OF OMAHA...MOVING NORTH AT 20 MPH. * SOME LOCATIONS AFFECTED... TABOR PACIFIC JUNCTION GLENWOOD...MALVERN 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 SATURDAY EVENING FOR SOUTHEASTERN NEBRASKA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 800 PM CDT SATURDAY EVENING FOR SOUTHWEST IOWA AND SOUTHEAST NEBRASKA. LAT...LON 4074 9587 4071 9568 4107 9556 4104 9586 FOBERT
Nearby
Tornado Warnings in Iowa, 2002Every tornado warning in 2002Tornadoes in 2002
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.