Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 52, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Jun 16, 1990, 10:55 PM CDT for Mills County, Pottawattamie County, Iowa. It was in force for 65 min. 1 report 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 16, 1990, 10:55 PM CDT (03:55 UTC)
- Expired
- Jun 17, 1990, 12:00 AM CDT
- In force
- 65 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
Counties Mills County, IA, 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 16, 11:30 PM CDT | Tornado F0 | 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
Topeka, KS (KTOP), launched 00:00Z, 3.9 hours before the alert went out and 243 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
- 3235 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1012 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 2.2
- Supercell composite
- 14.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Jun 16, 5:10 PM CDT, 5 hours 45 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE NORFOLK NE
510 PM CDT SAT JUN 16 1990
TIME EVENT
400 PM CDT MARBLE SIZE HAIL AT CROFTON IN KNOX COUNTY.
433 PM CDT FUNNEL CLOUD 20 NORTH OF O |NEILL IN HOLT COUTNY.
435-445 PM CDT SEVERAL BRIEF TORNADO TOUCHDOWNS APPROXIMATELY 15 MILES
NORTH OF O NEILL IN HOLT COUNTY. POWER LINES DOWN.
458 PM CDT FUNNEL CLOUD 7 SOUTHWEST OF PAGE IN HOLT COUNTY
BOWMANLocal storm report, Jun 16, 6:53 PM CDT, 4 hours 2 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE NORFOLK NE
650 PM CDT SAT JUN 16 1990
TIME EVENT
500 PM CDT TORNADO 3 TO 4 MILES WEST OF O NEILL IN HOLT COUNTY.
TWO FARMS DAMAGED...)SEVERAL BUILDINGS GONE.
505 PM CDT FUNNEL CLOUD OV VERDIGRE IN KNOX COUNTY.
BOWMANSpecial weather statement, Jun 16, 7:59 PM CDT, 2 hours 56 minutes before
NEZ010-170100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 755 PM CDT SAT JUN 16 1990 ...TORNADO WATCH 479 EASTERN NEBRASKA/WESTERN IOWA UNTIL 1AM CDT... ...FLASH FLOOD WATCH TONIGHT EASTERN NEBRASKA/WESTERN IOWA... AT 745 PM CDT...OMAHA RADAR SHOWED A LINE OF STRONG THUNDERSTORMS EXTENDED FROM SOUTHWEST OF COLUBMBUS SEVERE THUNDERSTORMS ARE NO LONGER A THREAT. FLASH FLOODING IS STILL A MAJOR THREAT IN MUCH OF NORTHEAST NEBRASKA WHERE HEAVY RAINS ARE FALLING. HEAVY RAIN IS STILL POSSIBLE LATER TONIGHT IN SOUTHEAST NEBRASKA. POLLACK
Special weather statement, Jun 16, 8:08 PM CDT, 2 hours 47 minutes before
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</html>Special weather statement, Jun 16, 9:41 PM CDT, 1 hour 14 minutes before
NEZ004-009-170330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORFOLK NE 940 PM CDT SAT JUN 16 1990 ...STRONG THUNDERSTORMS CONTINUE IN PLATTE...COLFAX AND SOUTHERN STANTON COUNTIES... AT 930 THIS EVENING NORFOLK RADAR SHOWED A VERY STRONG THUNDERSTORM JUST NORTHWEST OF COLUMBUS...AND ANOTHER STRONG THUNDERSTORM FROM CRESTON TO CLARKSON ON THE PLATTE-COLFAX-STANTON COUNTY LINE. THESE STORMS WERE MOVING TO THE EAST AT ABOUT 25 MPH...AND WILL BRING SOME VERY HEAVY RAIN TO EASTERN PLATTE COUNTY INCLUDING COLUMBUS... AS WELL AS SOME VERY HEAVY RAIN TO COLFAX AND SOUTHERN STANTON COUNTIES. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR RISING WATER ALONG CREEKS...LOW SPOTS AN5D DIPS IN ROADS. DK
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 8:47 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Dodge | 58 min |
| Jun 16, 9:17 PM CDT | Severe Thunderstorm Warning | OAX | Washington | 43 min |
| Jun 16, 9:22 PM CDT | Severe Thunderstorm Warning | OAX | Saline | 68 min |
| Jun 16, 9:37 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster | 68 min |
| Jun 16, 10:11 PM CDT | Severe Thunderstorm Warning | OAX | Cass, Sarpy | 64 min |
| Jun 16, 10:14 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Jefferson, Saline | 46 min |
| Jun 16, 10:35 PM CDT | Severe Thunderstorm Warning | OAX | Douglas, Washington | 55 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1990Every severe thunderstorm warning 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.