Alert archive / Iowa / Tornado Warnings in 1997
Tornado Warning 19, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at Jul 13, 1997, 6:47 PM CDT for Mills County, Montgomery County, Iowa. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 13, 1997, 6:47 PM CDT (23:47 UTC)
- Expired
- Jul 13, 1997, 7:20 PM CDT
- In force
- 33 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
Counties Mills County, IA, Montgomery County, IA
The radar
The Omaha radar (KOAX), 88 km from the middle of the area, began a volume at 23:47 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 |
|---|---|---|---|
| Jul 13, 6:45 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.8 hours before the alert went out and 88 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
- 2893 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1200 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOMA 132347 RRA TOROMA IAC129-137-140020- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 647 PM CDT SUN JUL 13 1997 * TORNADO WARNING FOR EASTERN MILLS COUNTY - IN SOUTHWESTERN IOWA WESTERN MONTGOMERY COUNTY - IN SOUTHWESTERN IOWA * UNTIL 720 PM CDT * SOME LOCATIONS AFFECTED EMERSON NOW COBURG BY AROUND 655 PM CDT RED OAK BY AROUND 710 PM CDT * AT 643 PM CDT...A POSSIBLE TORNADO WAS INDICATED BY DOPPLER RADAR 33 MILES SOUTHEAST OF DOWNTOWN OMAHA OR 8 MILES NORTHWEST OF COBURG MOVING EAST AT 15 MPH. PERSONS IN THE WARNED AREA SHOULD TAKE SHELTER IN A BASEMENT IF AVAILABLE. OTHERWISE GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. CARS AND MOBILE HOMES SHOULD BE ABANDONED. FOBERT
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 13, 5:55 PM CDT, 52 minutes before
NEZ015-018-032-033-IAZ043-140300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 555 PM CDT SUN JUL 13 1997 THE PORTION OF SEVERE THUNDERSTORM WATCH IN NORTHEAST NEBRASKA HAS BEEN CANCELLED. THE WATCH IS NO LONGER IN EFFECT FOR CUMING...STANTON ...THURSTON...OR WAYNE COUNTIES IN NEBRASKA...OR MONONA COUNTY IOWA. OTHER THUNDERSTORMS ARE DEVELOPING RAPIDLY IN SOUTHWEST IOWA AND COULD EXTEND INTO THE SOUTHEAST CORNER OF NEBRASKA. SEVERE WEATHER WILL BE POSSIBLE WITH THESE STORMS. POLLACK
Special weather statement, Jul 13, 5:56 PM CDT, 51 minutes before
NEZ015-018-032-033-IAZ043-140300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 555 PM CDT SUN JUL 13 1997 THE PORTION OF SEVERE THUNDERSTORM WATCH IN NORTHEAST NEBRASKA HAS BEEN CANCELLED. THE WATCH IS NO LONGER IN EFFECT FOR CUMING...STANTON ...THURSTON...OR WAYNE COUNTIES IN NEBRASKA...OR MONONA COUNTY IOWA. OTHER THUNDERSTORMS ARE DEVELOPING RAPIDLY IN SOUTHWEST IOWA AND COULD EXTEND INTO THE SOUTHEAST CORNER OF NEBRASK.A. SEVERE WEATHER WILL BE POSSIBLE WITH THESE STORMS. POLLACK
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 8:19 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 46 min |
| Jul 13, 5:55 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 45 min |
Nearby
Tornado Warnings in Iowa, 1997Every tornado warning in 1997Tornadoes in 1997
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.