Alert archive / Iowa / Tornado Warnings in 1990
Tornado Warning 12, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at Jun 13, 1990, 10:01 PM CDT for Pottawattamie County, Iowa. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- Jun 13, 1990, 10:01 PM CDT (03:01 UTC)
- Expired
- Jun 13, 1990, 10:30 PM CDT
- In force
- 29 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.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 3.0 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
- 3606 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 113 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 140301
TOROMA
IAC137-155-140330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA NE
1001 PM CDT WED JUN 13 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 1030 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE SOUTHWEST PART OF IOWA
NORTHWEST MONTGOMERY...
IN THE WEST CENTRAL PART OF IOWA
EASTERN POTTAWATTAMIE...
AT 955 PM CDT A POSSIBLE TORNADO WAS INDICATED BY RADAR OVER
SOUTHEASTERN POTTAWATTAMIE COUNTY. IT WAS MOVING TO THE SOUTHEAST
AT 20 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.
PEOPLE IN THE PATH OF THIS TORNADO SHOULD GET TO A SAFE PLACE...
SUCH AS A BASEMENT TO SAVE YOUR LIVES...THIS IS A DANGEROUS STORM.
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.
WATTERSWhat 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 13, 5:52 PM CDT, 4 hours 9 minutes before
NEZ010-020-IAZ009-140000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 545 PM CDT WED JUN 13 1990 ...A TORNADO WATCH REMAINS IN EFFECT FOR EXTREME SOUTHEAST NEBRASKA AND SOUTHWEST IOWA UNTIL 11 PM CDT... AT 535 PM CDT...SCATTERED THUNDERSTORMS WERE MOVING THROUGH SOUTHWEST IOWA. THE STRONGEST THUNDERSTORM WAS OVER SOUTHEAST MILLS COUNTY 10 MILES WEST OF RED OAK OR 30 MILES SOUTHEAST OF OMAHA. THE THUNDERSTORM OVER SOUTHEAST MILLS COUNTY WAS MOVING SLOWLY NORTHEAST AT 10 MILES AN HOUR AND WAS PRODUCING VERY HEAVY RAIN. RAPID RISES IN SMALL STREAMS MAY OCCUR IN SOUTHEAST MILLS COUNTY. ALL OF THE THUNDERSTORMS IN SOUTHWEST IOWA WILL LIKELY PRODUCE VERY HEAVY RAIN...GUSTY WINDS...DANGEROUS LIGHTNING AND POSSIBLY SMALL HAIL. IF YOU ARE IN THE PATH OF THESE THUNDERSTORMS...YOU SHOULD GO INTO A STRONG REINFORCED BUILDING UNTIL AFTER THE STORM PASSES. ^ REMEMBER A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOJR SEVERE THUNDERSTORMS AND POSSIBLY TORNADOES IN OR NEAR THE WATCH AREA. JOHNSON
Special weather statement, Jun 13, 7:49 PM CDT, 2 hours 12 minutes before
NEZ010-020-IAZ009-140130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 745 PM CDT WED JUN 13 1990 ...THE TORNADO WATCH REMAINS IN EFFECT FOR EXTREME SOUTHEAST NEBRASKA AND SOUTHWEST IOWA HAS BEEN CANCELLED... THE TORNADO WATCH FOR EXTREME SOUTHEAST NEBRASKA AND SOUTHWEST IOWA HAS BEEN CANCELLED. THUNDERSTORMS REMAINED OVER MILLS AND FREMONT COUNTIES IN SOUTHWEST IOWA BUT WERE NOT PRODUCING SEVERE WEATHER. THUNDERSTORMS WITH BRIEF HEAVY RAIN CONTINUED TO FORM OVER THE SAME AREA WITH VERY LITTLE MOVEMENT. RAPID RISES IN SMALL STREAMS MAY OCCUR IN THESE AREAS. IN ADDITION TO HEAVY RAIN THE STORMS MAY ALSO PRODUCE GUSTY WINDS...DANGEROUS LIGHTNING AND POSSIBLY SMALL HAIL.N IF YOU ARE IN THE PATH OF THESE THUNDERSTORMS...YOU SHOULD GO INTO A STRONG REINFORCED BUILDING UNTIL AFTER THE STORM PASSES. WATTERS
Special weather statement, Jun 13, 7:59 PM CDT, 2 hours 2 minutes before
NEZ010-020-140230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 800 PM CDT WED JUN 13 1990 ...HEAVY THUNDERSTORMS OVER SOUTHEAST NEBRASKA AND SOUTHWEST IOWA... NEW THUNDERSTORMS HAVE DEVELOPED OVER SOUTHEAST SALINE AND NORTHERN GAGE COUNTY IN SOUTHEAST NEBRASKA...ABOUT 15 MILES NORTHWEST OF BEATRICE. THUNDERSTORMS REMAINED OVER MILLS AND FREMONT COUNTIES IN SOUTHWEST IOWA. THESE STORMS CONTAINED HEAVY RAIN AND SHOWED VERY LITTLE MOVEMENT. RAPID RISES IN SMALL STREAMS MAY OCCUR IN THESE AREAS. IN ADDITION TO HEAVY RAIN THE STORMS MAY ALSO PRODUCE GUSTY WINDS...DANGEROUS LIGHTNING AND POSSIBLY SMALL HAIL. IF YOU ARE IN THE PATH OF THESE THUNDERSTORMS...YOU SHOULD GO INT]O A STRONG REINFORCED BUILDING UNTIL AFTER THE STORM PASSES. WATTERS
Special weather statement, Jun 13, 8:23 PM CDT, 1 hour 38 minutes before
NEZ015-140220- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LINCOLN NE 815 PM CDT WED JUN 13 1990 ...HEAVY THUNDERSTORMS OVER SOUTHEAST NEBRASKA SOUTH OF LINCOLN... NEW THUNDERSTORMS HAVE DEVELOPED OVER EXTREME SOUTHERN LANCASTER AND NORTHWEST GAGE COUNTY NEBRASKA...ABOUT 30 MILES SOUTH OF LINCOLN AT 815 PM CDT WEDNESDAY EVENING. THESE THUNDERSTORMS ARE BUILDING RAPIDLY AND RADAR INDICATES THEY ARE PRODUCING HEAVY RAIN AND POSSIBLY SOME SMALL HAIL. MOVEMENT IS TO THE NORTHEAST AT ABOUT 30 MPH AND THEY ARE EXPECTED TO PASS THRU SOUTHERN LANCASTER AND NORTHERN GAGE COUNTY UP UNTIL 930 PM CDT TONIGHT. IF YOU ARE IN THE PATH OF THESE THUNDERSTORMS BE PREPARED FOR BRIEF HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLY SMALL HAIL IN ADDITION TO FREQUENT LIGHTENING. FM
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 8:37 PM CDT | Tornado Warning | OAX | Fremont, Mills | 38 min |
| Jun 13, 9:04 PM CDT | Tornado Warning | OAX | Montgomery, Page | 26 min |
| Jun 13, 9:47 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 58 min |
| Jun 13, 10:01 PM CDT | Tornado Warning | OAX | Montgomery | 24 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; the sounding from the Mesonet's radiosonde archive.