Alert archive / Iowa / Flash Flood Warnings in 1990
Flash Flood Warning 7, NWS Omaha, NE
NWS Omaha, NE issued this flash flood warning at Jun 16, 1990, 4:16 AM CDT for Harrison County, Iowa. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 16, 1990, 4:16 AM CDT (09:16 UTC)
- Expired
- Jun 16, 1990, 7:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Harrison 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, 9.3 hours before the alert went out and 61 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
- 3621 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 66 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 160916 RRA
FFWOMA
IAC085-161215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA NE
416 AM CDT SAT JUN 16 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 715 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE WEST CENTRAL PART OF IOWA
HARRISON
AT 400 AM CDT THUNDERSTORMS PRODUCING VERY HEAVY RAIN WERE MOVING
INTO MISSOURI VALLEY IN HARRISON COUNTY IA...AROUND 20 MILES
NORTHEAST OF OMAHA. THUNDERSTORMS FRIDAY NIGHT AND EARLIER
THIS MORNING HAVE ALREADY CAUSED STREAMS AND RIVERS TO REACH
BANKFULL. THESE STORMS...COULD CAUSE FLOODING ALONG THE BOYER
AND WILLOW RIVERS...BUT MOST LIKELY FLOO.DING WOULD OCCUR ALONG
THEIR TRIBUTARIES.
PEOPLE IN THE WARNED AREA...ESPECIALLY CAMPERS...SHOULD SEEK HIGHER
GROUND WITHOUT DELAY. MOTORISTS SHOULD USE CAUTION IN APPROACHING
LOW AREAS OF ROADS.
CHERMOKWhat forecasters said that day
The local office's own words before this flash flood 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 15, 10:40 PM CDT, 5 hours 36 minutes before
NEZ003-004-007-008-009-160430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORFOLK NE 1030 PM CDT FRI JUN 15 1990 ...SHOWERS AND THUNDERSTORMS BEGINNING TO MOVE INTO NORTHEAST NEBRASKA EARLY TONIGHT... ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF NORTHEAST NEBRASKA UNTIL 100 AM CDT AND A FLASH FLOOD WATCH ALL NIGHT... AT 1030 PM CDT NORFOLK RADAR SHOWED A BAND OF STRONG THUNDERSTORMS FROM NELIGH THROUGH NORFOLK TO WEST POINT. THESE STORMS WERE WERE MOVING TO THE EAST-NORTHEAST AT ABOUT 45 MPH. THESE STORMS CONTAIN FREQUENT AND VERY DANGEROUS LIGHTNING...HEAVY RAIN AND POSSIBLY SOME HAIL. THESE STORMS WILL CONTINUE TO SPREAD ACROSS MUCH OF NORTHEAST NEBRASKA DURING lTHE NEXT HOUR. NEW STORMS WILL LIKELY DEVELOP TO THE WEST AND MOVE EASTWARD ACROSS NORTHEAST NEBRASKA THROUGH THE NIGHT. DK
Special weather statement, Jun 15, 10:40 PM CDT, 5 hours 36 minutes before
NEZ10-20-160530- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 1030 PM CDT FRI JUN 15 1990 A FLASH FLOOD WATCH IS IN EFFECT FOR EASTERN NEBRASKA AND ADJACENT SOUTHWEST IOWA TONIGHT. AT 1020 PM CDT NATIONAL WEATHER SERVICE RADAR SHOWED THUNDERSTORMS... SOME PRODUCING VERY HEAVY RAIN...MOVING INTO FAR EASTERN NEBRASKA. STRONG STORMS WERE IN THE COLUMBUS AREA MOVING TOWARD THE TOWNS OF DODGE AND NORTH BEND IN WESTERN DODGE. STRONG STORMS ALSO EXTENDED FROM BEATRICE TO NORTH OF PAWNEE CITY...55 MILES SOUTHEAST OF LINCOLN. THESE STORMS WERE PART OF A LARGE AREA OF THUNDERSTORMS THAT COVERED MUCH OF EASTERN NEBRASKA WEST OF A LINE FROM 20 MILES WEST OF SIOUX CITY IOWA TO 30 MILES WEST OF FALLS CITY NEBRASKA. THESE THUNDERSTORMS WILL LIKELY PRODUCE AREAS OF HEAVY RAIN IN EASTERN NEBRASKA. THE GROUND OVER MUCH OF EASTERN NEBRASKA IS SATURATED FROM RAINS OF THE LAST FEW DAYS. PEOPLE LIVING IN LOW LYING OR FLOOD PRONE AREAS AS WELL AS ALONG CREEKS...STREAMS AND RIVERS SHOULD STAY ALERT TO WEATHER CONDITIONS AND BE PREPARED TO MOVE QUICKLY TO HIGH GROUND IF A FLASH FLOOD WARNING IS ISSUED OR RISING WATER THREATENS. CAMPERS IN THE FLASH FLOOD WATCH AREA SHOULD ALfSO LISTEN FOR STATEMENTS AND WARNINGS AND SHOULD CONSIDER MOVING TO HIGHER GROUND NOW. FLASH FLOODING CAN OCCUR IN A MATTER OF MINUTES LEAVING YOU LITTLE TIME TO REACH SAFETY. SEELEY
Special weather statement, Jun 15, 11:07 PM CDT, 5 hours 9 minutes before
NEZALL-160430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 1105 PM CDT FRI JUN 15 1990 ...TORNADO WATCH NUMBER 470 FOR CENTRAL NEBRASKA EXPIRES... ...FLASH FLOOD WATCH REMAINS IN EFFECT FOR EASTERN NEBRASKA... ...SEVERE THUNDERSTORM WATCH NUMBER 471 IN EFFECT FOR PARTS OF EASTERN NEBRASKA UNTIL 100 AM CDT... THE TORNADO WATCH FOR CENTRAL NEBRASKA HAS EXPIRED. SEVERE THUNDERSTORMS ARE STILL POSSIBLE IN EASTERN NEBRASKA FOR THE NEXT COUPLE OF HOURS...BUT THE MAIN THREAT IS FLASH FLOODING FROM HEAVY RAIN. HEAVY RAIN IS FALLING IN PARTS OF NORTHEAST NEBRASKA WHERE FLOODING ALREADY OCCURED LAST NIGHT. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. REMEMBER...A FLASH FLOOD CAN BE LIFE THREATENING. DO NOT TRY TO DRIVE THROUGH RUNNING WATER. < POLLACK
Special weather statement, Jun 15, 11:41 PM CDT, 4 hours 35 minutes before
NEZ009-015-019-160430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 1135 PM CDT FRI JUN 15 1990 ...FLASH FLOOD WATCH REMAINS IN EFFECT FOR EASTERN NEBRASKA... ...SEVERE THUNDERSTORM WATCH NUMBER 471 HAS BEEN CANCELLED... THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT FOR PARTS OF EASTERN NEBRASKA HAS BEEN CANCELLED. 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
Local storm report, Jun 16, 12:29 AM CDT, 3 hours 47 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE NORFOLK NE
1225 AM CDT SAT JUN 16 1990
TIME EVENT
15/1130 PM CDT WIND DAMAGE... TREES DOWN... VEHICLE BLOWN OFF ROAD
RS
1000 PM CDT 60 TO 70 PMH WINDS 3 MILES WEST OF NORFOLK IN MADISON
COUNTY.
...SUMMARY OF FLASH FLOOD EVENT ON SHELL CREEK IN PLATTE COUNTY....
BEGAN APPROXIMATELY 1000 PM CDT NEAR NEWMAN GROVE IN SOUTHWEST MADISON
COUNTY. AT AROUND 1030 PM CDT WHAT WAS DESCRIBED AS A WALL OF WATER
MOVED THROUGH LINDSAY IN PLATTE COUNTY WASHING 18 CARS OUT OF A
MANUFACTORING PLANT PARKING LOT AND INTO THE CREEK. WATER WAS 3 TO 4
FEET DEEP ACROSS HIGHWAY 91 THROUGH LINDSAY. CREST REACHED DOWNSTREAM
AT PLATTE CENTER IN PLATTE COUNTY AROUND MIDNIGHT WITH A DEPTH OF 3
TO 4 FEET IN THE BUSINESS DISTRICT. NUMEROUS PROPANE TANKS WASHED INTO
TOWN AND THE RAILROAD WAS WASHED OUT JUST WEST OF TOWN. MANY COUNTY
ROADS REMAINED CLOSED FRIDAY MORNING DUE TO HIGH WATER?.
THERE WERE NO DEATHS OR INJURIES AND ALL PERSONS HAVE BEEN LOCATED.
PROPERTY DAMAGE WAS EXTENSIVE.
BOWMANLocal storm report, Jun 16, 12:33 AM CDT, 3 hours 43 minutes before
STORM REPORT...CORRECTION TO TEXT... OLD REPORT ON FLOOD.. NATIONAL WEATHER SERVICE NORFOLK NE 1225 AM CDT SAT JUN 16 1990 TIME EVENT 15/1130 PM CDT WIND DAMAGE... TREES DOWN... VEHICLE BMLOWN OFF ROAD .............. ...PREVIOUS MSG HAD OLD INFORMATION PERTAINING TO SHELL CREEK FLOODING THAT OCCURED THURSDAY NIGHT... PLEASE DISREGARD... RS ..
Nearby
Flash Flood Warnings in Iowa, 1990Every flash flood 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; the sounding from the Mesonet's radiosonde archive.