Alert archive / Iowa / Tornado Warnings in 1990
Tornado Warning 6, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at Jun 7, 1990, 10:07 AM CDT for Pottawattamie County, Iowa. It was in force for 38 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 7, 1990, 10:07 AM CDT (15:07 UTC)
- Expired
- Jun 7, 1990, 10:45 AM CDT
- In force
- 38 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Pottawattamie County, IA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 7, 10:13 AM CDT | Thunderstorm Wind 50 | Pottawattamie, IA | |
| Jun 7, 10:15 AM CDT | Thunderstorm Wind 50 | Pottawattamie, IA |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 3.1 hours before the alert went out and 69 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
- 3632 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 123 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 071512 COR
TOROMA
NEC021-IAC155-071545-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTED
NATIONAL WEATHER SERVICE OMAHA NE
1007 AM CDT THU JUN 7 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 1045 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE EAST CENTRAL PART OF NEBRASKA
DOUGLAS...INCLUDING THE OMAHA METROPOLITAN AREA...
IN THE WEST CENTRAL PART OF IOWA
POTTAWATTAMIE...INCLUDING THE CITY OF COUNCIL BLUFFS...
...THIS WARNING INCLUDES THE OMAHA/COUNCIL BLUFFS METROPOLITAN
AREA...
AT 1000 AM...A POSSIBLE TORNADO WAS MOVING THROUGH MILLARD IN
SOUTHERN DOUGLAS COUNTY. THE POSSIBLE TORNADO WAS MOVING NORTHEAST
AND WILL THROUGH OMAHA. RADAR INDICATED A POSSIBLE TORNADO OVER
POTTAWATEME COUNTY NEAR COUNCIL BLUFFS.
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.
IF YOU ARE CAUGHT IN THE OPEN...TRY TO HIDE IN A DEPRESSION...LIKE
A DITCH OR A CULVERT. COVER YOUR HEAD WITH YOUR HANDS.
DAMAGE REPORTS OR OBSERVED SEVERE WEATHER SHOULD BE GIVEN TO A LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE...BUT
A SAFE PLACE IS YOUR FIRST CONCERN. DO NOT TRY TO OUTRUN A
TORNADO WITH YOUR CAR.
...CORRECTION...
BURT COUNTY IS NOT IN A TORNADO WARNING. DOUGLAS AND POTTAWATTAMIE
COUNTI$ES ARE UNDER THE TORNADO WARNING.
SEELEYWhat 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, Jun 7, 7:12 AM CDT, 2 hours 55 minutes before
NEZ003-004-007-008-009-071300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORFOLK NE 710 AM CDT THU JUN 7 1990 ...SHOWERS AND A FEW ISOLATED THUNDERSHOWERS IN PARTS OF NORTHEAST AND MUCH OF NORTHCENTRAL NEBRASKA THIS MORNING... AT 705 AM CDT NORFOLK RADAR SHOWED SCATTERED SHOWERS AND A FEW ISOLATED THUNDERSHOWERS IN MUCH OF NORTHCENTRAL NEBRASKA AND A FEW SHOWERS IN NORTHEAST NEBRASKA. BRIEF HEAVY RAIN...AND GUSTY WINDS WILL BE POSSIBLE WITH THESE SHOWERS AND THUNDERSHOWERS AS THEY MOVE EAST DURING THE NEXT HOUR. THE PRECIPIATION WAS SPREADING EAST AT AROUND 30 MPH AND SHOULD BE IN MUCH OF NORTHEAST NEBRASKA BY AROUND 830 AM CDT. MILLER
Special weather statement, Jun 7, 8:51 AM CDT, 1 hour 16 minutes before
NEZ015-19-071430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LINCOLN NE 845 AM CDT THU JUN 7 1990 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF SOUTHEAST NEBRASKA THIS MORNING. A LINE OF STRONG THUNDERSTORMS ARE MOVING ACROSS SOUTHEAST NEBRASKA. AT 845 AM CDT RADAR SHOWED THE LINE EXTENDING FROM SOUTHEAST JEFFERSON COUNTY TO THE NORTH AND NORTHWEST INTO SOUTHERN YORK COUNTY. THE THUNDERSTORMS ARE MOVING TO THE EAST NORTHEAST AT 30 MPH. AT 840 AM CDT FAIRBURY WHICH IS 55 SSW OF LINCOLN REPORTED HEAVY RAIN AND PEA SIZE HAIL. AT 845 AM CDT HEAVY RAIN WAS REPORTED AT FRIEND WHICH IS 32 MILES WSW OF LINCOLN VISIBILITY NEAR ZERO AT TIMES. THESE STORMS ARE MOVING TOWARD THE LINCOLN AREA AND COULD REACH THIS AREA BY 930 TO 10 AM CDT. THE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAIN AND HAIL IS ALSO POSSIBLE AS THE STORMS MOVE ACROSS SOUTHEAST NEBRASKA. JB
Special weather statement, Jun 7, 9:13 AM CDT, 54 minutes before
NEZ015-19-071500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LINCOLN NE 910 AM CDT THU JUN 7 1990 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF SOUTHEAST NEBRASKA THIS MORNING. AT 910 AM CDT RADAR SHOWED THE LINE OF THUNDERSTORMS MOVING THROUGH SOUTHEAST NEBRASKA HAS INCREASED IN INTENSITY SINCE 845 AM CDT. AT 910 AM CDT THE LINE EXTENDED FROM NORTHWEST SEWARD COUNTY THROUGH SOUTHWEST LANCASTER COUNTY AND INTO CENTRAL GAGE COUNTY. THESE STORMS HAVE BEEN PRODUCING VERY HEAVY RAIN AND UP TO MARBLE SIZE HAIL. THE STORMS ARE MOVING RAPIDLY TO THE EAST NORTHEAST AT 60 MPH. HEAVY RAIN IS EXPECTED TO MOVE INTO THE LINCOLN BY 930 AM CDT. THE STORMS WILL PRODUCE HEAVY RAIN ACROSS SEWARD LANCASTER GAGE COUNTIES AND WILL MOVE INTO JOHNSON AND PAWNEE COUNTIES BY 10 AM CDT. JB
Special weather statement, Jun 7, 9:18 AM CDT, 49 minutes before
NEZ003-004-007-008-009-071500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORFOLK NE 910 AM CDT THU JUN 7 1990 ...SHOWERS AND A FEW STRONG THUNDERSTORMS IN PARTS OF NORTHEAST AND NORTH CENTRAL NEBRASKA THIS MORNING... AT 910 AM CDT NORFOLK RADAR INDICATED A RATHER STRONG THUNDERSTORM ENTERING WESTERN BOONE COUNTY WEST OF CEDAR RAPIDS...OR ABOUT 50 MILES SOUTHWEST OF NORFOLK. THIS STORM WILL LIKELY PRODUCE HEAVY RAIN AND SOME GUSTY WINDS AS IT CONTINUES MOVING EAST AT 30 MPH THROUGH BOONE COUNTY IN THE NEXT HOUR. OTHER SHOWERS AND THUNDERSTORMS EXTENDED FROM THE NEBRASKA-SOUTH DAKOTA BORDER NORTH OF ONEILL TO ABOUT 10 MILES WEST OF COLUMBUS THEN FURTHER SOUTHEAST TO LINCOLN. KLEFFMAN
Special weather statement, Jun 7, 9:32 AM CDT, 35 minutes before
NEZ010-015-019-020-071530- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 925 AM CDT THU JUN 7 1990 ...PARTS OF SEVERE THUNDERSTORM WATCH 407 HAVE BEEN CANCELLED... SEVERE THUNDERSTORM W
Special weather statement, Jun 7, 9:46 AM CDT, 21 minutes before
NEZ015-19-071530- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LINCOLN NE 945 AM CDT THU JUN 7 1990 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF SOUTHEAST NEBRASKA THIS MORNING. THE LINE OF STRONG THUNDERSTORMS MOVING RAPIDLY THROUGH SOUTHEAST NEBRASKA HAS BEGUN TO DECREASE IN INTENSITY AS IT MOVES TO THE EAST NORTHEAST. AT 940 AM CDT THE STRONGEAT STORMS WERE LOCATED FROM NORTHEAST BUTLER COUNTY INTO SAUNDERS COUNTY AND EXTENDS SOUTH THROUGH CASS OTOE AND INTO JOHNSON AND PAWNEE COUNTIES. THE STORMS CONTINUE TO PRODUCE VERY HEAVY RAIN SOME HAIL AND HIGH WIND. THE STORMS ARE MOVING TO THE EAST NORTHEAST AT 50 TO 60 MPH. LIGHT RAIN IS EXPECTED TO CONTINUE THIS MORNING BEHIND THE LINE OF STRONG THUNDERSTORMS. JB
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 10:21 AM CDT | Tornado Warning | OAX | Fremont | 29 min |
Nearby
Tornado Warnings in Iowa, 1990Every tornado warning in 1990Tornadoes in 1990
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.