Alert archive / Ohio / River Flood Warnings in 2018

River Flood Warning 66, NWS Wilmington, OH

September 8, 2018Hamilton County, Ohio

NWS Wilmington, OH issued this river flood warning at Sep 8, 2018, 9:10 PM EDT for Hamilton County, Ohio. It took effect at Sep 9, 2018, 1:35 AM EDT. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued
Sep 8, 2018, 9:10 PM EDT (01:10 UTC)
In effect from
Sep 9, 2018, 1:35 AM EDT
Expired
Sep 9, 2018, 10:18 PM EDT
In force
21 hr
Issued by
NWS Wilmington, OH
Area
Storm-based polygon
Flood severity
Moderate

County Hamilton County, OH

The radar

The Cincinnati radar (KILN), 67 km from the middle of the area, began a volume at 01:14 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 river

Written for the forecast point Great Miami River at Miamitown (MIAO1). The gauge peaked at 13.95 ft at Sep 9, 2018, 4:00 PM EDT.

actionminormoderate102009/0909/1009/11
Action stage
14 ft
Minor stage
16 ft
Moderate stage
24 ft
Major stage
30 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 03274615, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, OH wrote its last area forecast discussion before this river flood warning went out at Sep 8, 7:52 PM EDT, 1 hour 18 minutes earlier.

Area forecast discussion, Sep 8, 7:52 PM EDT, 1 hour 18 minutes before
Area Forecast Discussion
National Weather Service Wilmington OH
752 PM EDT Sat Sep 8 2018

.SYNOPSIS...
The remnants of Gordon will ride across the region tonight into
Sunday, producing periods of heavy rain. A drier and warmer
weather pattern will develop towards the middle of next week.

&&

.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
The main punch from the remnants of Gordon will affect the fa
tonight. The moderate to heavy rains in srn IN/north central KY
will gradually lift up into the region this evening. Deep
moisture will continue to increase as the remnant sfc low lifts
northeast up the Ohio River. Precip water of 2" will affect the
region overnight. Timing of heaviest rains is to reach se IN
this evening, then overspread the region during the night. The
heaviest axis of the rainfall will be around I-70. Still have 5+
inches in that area. Obviously kept PoPs at 100 percent. Models
are still showing a QPF gradient as you head into nrn KY,
however the latest runs are the model are showing that the
backedge of the pcpn might hang up in the southeast, so expanded
the Flash Flood Watch to the entire area. Best chance of
thunder will be on the southern edge of the QPF,

Low temperatures tonight will range from the upper 50s in the
north to the mid 60 in nrn KY.

&&

.SHORT TERM /6 AM SUNDAY MORNING THROUGH 6 PM SUNDAY/...
By 12Z Sunday, the sfc low will be southwest of the fa, with a
band heavy rain forecast to be pushing through the region. As
the sfc low moves east, so will the heavy rain. As mentioned
above, and band of heavy rain could train over the se counties
on Sunday. Lowered highs in the northwest to mid 60s.
Temperatures will warm into upper 70s in the far southeast
counties.

A chance of light pcpn will linger in the west early Sunday
night, then drying will start to filter in from the west.

&&

.LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/...
Most of the precipitation from the remnants of Gordon will be
exiting the area by the start of the long term.  A weak upper level
disturbance will keep clouds and a few showers in the forecast for
Monday.  This will also keep temperatures down with high
temperatures only expected to reach into the 60s and 70s.

Dry conditions will move into the region Monday night and continue
through Wednesday.  Went close to guidance for temperatures during
this time.  A few storms will be possible primarily during the
daytime hours Thursday and Friday.

There is a little more uncertainty heading into Saturday depending
on the remnants of the next tropical system.  Limited precipitation
chances on Saturday to a chance to account for this uncertainty.
Also decreased temperatures slightly with chance for rain and
potential cloud cover.

&&

.AVIATION /00Z SUNDAY THROUGH THURSDAY/...
MVFR conditions will deteriorate to IFR as rain and showers
continue and get heavier through the night. Tight gradient
across the region will keep gusty east northeast winds going for
the early part of the TAF period but then start to relax towards
00Z as a surface low approaches from the southwest.
Precipitation may decrease in intensity on Sunday and even
start to taper off in the Cincinnati area towards 00Z. But IFR
ceilings will persist area wide through the remainder of the
period.

OUTLOOK...IFR ceilings will likely continue Sunday into Monday.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...Flash Flood Watch through Monday morning for OHZ026-034-035-
     042>046-051>056-060>065-070>074-077>082-088.
KY...Flash Flood Watch through Monday morning for KYZ089>100.
IN...Flash Flood Watch through Monday morning for INZ050-058-059-
     066-073>075-080.

&&

SYNOPSIS...KC/Sites
NEAR TERM...Sites
SHORT TERM...Sites
LONG TERM...
AVIATION...
Hazardous weather outlook, Sep 8, 4:27 AM EDT, 16 hours 43 minutes before
Hazardous Weather Outlook
National Weather Service Wilmington OH
427 AM EDT Sat Sep 8 2018

KYZ098>100-OHZ081-088-090830-
Robertson-Mason-Lewis-Adams-Scioto-
427 AM EDT Sat Sep 8 2018

This Hazardous Weather Outlook is for Northeast Kentucky, Northern
Kentucky and South Central Ohio.

.DAY ONE...Today and Tonight.

Showers and thunderstorms today and tonight may produce locally heavy
rainfall. Isolated flooding and flash flooding will be possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Scattered showers and thunderstorms are expected Sunday afternoon and
evening. These storms may produce locally heavy rainfall as well as
gusty winds. An isolated tornado cannot be completely ruled out.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

INZ050-058-059-066-073>075-080-KYZ089>097-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>080-082-090830-
Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio-
Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-
Pendleton-Bracken-Hardin-Mercer-Auglaize-Darke-Shelby-Logan-Union OH-
Delaware-Miami-Champaign-Clark-Madison-Franklin OH-Licking-Preble-
Montgomery-Greene-Fayette OH-Pickaway-Fairfield-Butler-Warren-
Clinton-Ross-Hocking-Hamilton-Clermont-Brown-Highland-Pike-
427 AM EDT Sat Sep 8 2018

...FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH MONDAY
MORNING...

This Hazardous Weather Outlook is for East Central Indiana,
Southeast Indiana, Northern Kentucky, Central Ohio, South Central
Ohio, Southwest Ohio and West Central Ohio.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

Areas of heavy rain with embedded thunderstorms may produce flooding
and flash flooding. Rainfall today and tonight will range from 2 to 5
inches. Rises on area creeks and streams will be likely.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

Flash Flood Watch.

Areas of heavy rain with embedded thunderstorms may produce flooding
and flash flooding. Additional rainfall of 1 to 3 inches will be
possible Sunday and Sunday night. Rises on area creeks and streams
will be likely.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

In the hours before

Local storm report, Sep 8, 3:49 PM EDT, 5 hours 21 minutes before
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Local storm report, Sep 8, 4:06 PM EDT, 5 hours 4 minutes before
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Local storm report, Sep 8, 4:09 PM EDT, 5 hours 1 minute before
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Local storm report, Sep 8, 5:49 PM EDT, 3 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
549 PM EDT SAT SEP 8 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0529 PM     FLOOD            3 N PORTSMOUTH          38.78N 82.99W
09/08/2018                   SCIOTO             OH   EMERGENCY MNGR

            U.S. 23 SOUTH DOWN TO ONE LANE DUE TO SLIP ON HIGHWAY
            BETWEEN LOWRY HOLLOW ROAD AND SCIOTO TRAIN ROAD.

&&

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 8, 10:42 PM EDTAreal Flood AdvisoryILNAdams, Brown, Clermont6 hr
Sep 9, 2:13 AM EDTAreal Flood AdvisoryILNAdams, Scioto3 hr
Sep 9, 3:51 AM EDTRiver Flood WarningILNAdams24 hr
Sep 9, 4:07 AM EDTAreal Flood WarningILNAdams, Brown, Clermont, Highland, Pike, Scioto18 hr
Sep 9, 4:50 AM EDTRiver Flood AdvisoryILNHamilton10 hr
Sep 9, 5:04 AM EDTAreal Flood AdvisoryILNPike, Ross, Scioto3 hr
Sep 9, 7:45 AM EDTAreal Flood WarningILNPike, Scioto12 hr
Sep 9, 7:50 PM EDTAreal Flood WarningILNPike, Scioto12 hr
Sep 8, 9:10 PM EDTAreal Flood AdvisoryILNGrant, Owen, Pendleton8 hr
Sep 8, 10:35 PM EDTAreal Flood AdvisoryILNCarroll, Gallatin, Owen6 hr
Sep 8, 11:23 PM EDTAreal Flood AdvisoryILNBoone, Campbell, Gallatin, Grant, Kenton, Owen and 1 more6 hr
Sep 9, 12:20 AM EDTAreal Flood AdvisoryILNBracken, Mason, Pendleton, Robertson4 hr
Sep 9, 2:49 AM EDTRiver Flood WarningILNCarroll, Gallatin, Grant, Owen13 hr
Sep 9, 4:26 AM EDTAreal Flood AdvisoryILNCarroll, Owen3 hr
Sep 9, 4:44 AM EDTAreal Flood AdvisoryILNPendleton3 hr
Sep 9, 7:15 AM EDTAreal Flood WarningILNCarroll, Gallatin, Owen11 hr
Sep 9, 7:20 AM EDTAreal Flood WarningILNPendleton12 hr
Sep 9, 2:34 PM EDTAreal Flood WarningILNDearborn, Ohio, Ripley15 hr

Nearby

River Flood Warnings in Ohio, 2018Every river flood warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.