A long period of heavy rain led to flooding on the Coquille River at Coquille.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MFR wrote it up.
A long period of heavy rain led to flooding on the Coquille River at Coquille.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Medford, OR wrote its last area forecast discussion before the first event at Nov 20, 4:07 PM PST, 1 hour 53 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEDFORD OR
407 PM PST TUE NOV 20 2012
DISCUSSION...
THE COLD FRONT THAT PROMPTED MULTIPLE HYDRO AND WIND HEADLINES
HAS PASSED OVER MUCH OF THE CWA...RESULTING IN DIMINISHED RAIN
COVERAGE AND GREATLY REDUCED WIND SPEEDS ON THE WEST SIDE OF THE
CASCADES. HOWEVER...THE FRONT HAS SLOWED AND BECOME LESS DEFINED
AND NOW LIES JUST EAST OF THE CREST OF THE CASCADES. WINDS REMAIN
STRONG ACROSS MUCH OF THE EAST SIDE...BUT NOT AS STRONG AS THIS
MORNING. DESPITE THE WEAKENING FRONT...AND ALTHOUGH WIND SPEEDS
HAVE DROPPED BELOW WARNING CRITERIA...GUSTY WINDS SHOULD REMAIN IN
PLACE THROUGH THE EVENING AND INTO TONIGHT. ALTHOUGH THE HEAVIEST
RAIN HAS COME TO AN END...RAIN SHOWERS SHOULD STILL REMAIN
WIDESPREAD THROUGH THE NEXT SEVERAL HOURS...BEFORE INCREASING IN
INTENSITY AND COVERAGE AS THE NEXT FRONT APPROACHES LATER THIS
EVENING AND TONIGHT. MOST RIVERS HAVE CRESTED OR ARE
CRESTING...BUT FLOODING REMAINS A CONCERN. SEE HYDRO DISCUSSION
BELOW FOR FURTHER DETAILS.
MODEL GUIDANCE IS IN GOOD AGREEMENT WITH THE PROGRESS OF THE NEXT
SHORTWAVE AND FRONT...PUSHING THE FEATURE THROUGH THE FORECAST AREA
DURING LATE TONIGHT AND DURING THE EARLY MORNING HOURS...AND OFF TO
THE EAST AND OUT OF THE CWA BY MIDDAY TOMORROW. ANOTHER ROUND OF
MODERATE TO HEAVY PRECIPITATION WILL ACCOMPANY THE FRONT...WITH
POST-FRONTAL SHOWERS PERSISTING THROUGH THE AFTERNOON. THIS RAIN
EVENT WILL NOT HAVE THE DEEP MOISTURE PULL OF THE PREVIOUS ONE...SO
DO NOT EXPECT LARGE IMPACTS. HOWEVER...WITH RESIDUAL EFFECTS ONGOING
FROM THE PREVIOUS EVENT...THERE REMAINS AN INCREASED THREAT OF ROAD
PONDING AS WELL AS DEBRIS FLOWS...LANDSLIDES...AND SLUMPING. RIVERS
SHOULD NOT SEE ANY SIGNIFICANT RISES ASSOCIATED WITH THIS NEW
PRECIPITATION. HEAVIEST RAINFALL AMOUNTS WILL OCCUR IN THE COASTAL
MOUNTAINS OF SOUTHWEST OREGON...AND ALONG THE CASCADES OVERNIGHT
TONIGHT. SNOW LEVELS WILL DROP SIGNIFICANTLY BEHIND THE FRONT TO
3500-4500 FEET...BUT BY THE TIME THIS OCCURS AND SNOW BEGINS FALLING
OVER THE MOUNTAIN PASSES...MOST PRECIPITATION WILL HAVE LEFT THE
AREA OR DIMINISHED TO LIGHT SHOWERS. HEAVIEST SNOW IS EXPECTED IN
THE CASCADES NEAR DIAMOND AND CRATER LAKES...WITH LIGHTER AMOUNTS IN
THE SOUTHERN CASCADES AND SISKIYOUS.
RIDGING WILL FINALLY BEGIN TO BUILD INTO THE REGION WEDNESDAY
NIGHT...AND WILL RESULT IN A MUCH NEEDED BREAK IN THE ACTION THROUGH
FRIDAY MORNING. BOTH THE 12Z GFS AND EC SOLUTIONS DEPICT THE NEXT
FRONTAL SYSTEM TO BEGIN TO IMPACT THE AREA FRIDAY...AND THEN REMAIN
DRAPED ACROSS SOUTHERN OREGON THROUGH SUNDAY MORNING. RAIN AMOUNTS
APPEAR RELATIVELY LIGHT THROUGH THE EVENT...AND SNOW LEVELS SHOULD
INCREASE TO WELL ABOVE PASS LEVELS DURING THIS EVENT. PRESSURE
GRADIENTS WILL NOT APPROACH THE STRONG VALUES SEEN WITH THE MOST
RECENT EVENT...SO GUSTY WINDS SHOULD REMAIN CONFINED TO HIGHER
ELEVATIONS AND THE EAST SIDE. LARGE SCALE RIDGING THEN RETURNS LATE
SUNDAY AND REMAINS IN PLACE THROUGH THE REMAINDER OF THE TERM.
AVIATION...
THE FRONT HAS MOVED THROUGH MOST OF THE AREA AND IS NOW FALLING
APART OVER KLAMATH COUNTY. THERE ARE STILL PLENTY OF SHOWERS AND
SOME GUSTY WINDS BEHIND IT. ANOTHER COLD FRONT IS PROGGED TO MOVE
THROUGH TONIGHT. VFR CONDITIONS AT THE COAST WILL GIVE WAY TO MVFR
CEILINGS AS ANOTHER ROUND OF MODERATE RAIN MOVES IN THIS EVENING.
FLOW WILL REMAIN UNIDIRECTIONAL, SO DO NOT EXPECT MUCH LLWS, BUT
MODERATE TURBULENCE IS LIKELY. THE FRONT WILL PROGRESS INLAND DURING
THE OVERNIGHT HOURS AND SPREAD LOW BRIEF PERIODS OF MVFR CEILINGS
AND VISIBILITIES TO THE INLAND VALLEYS. HIGHER TERRAIN WILL REMAIN
OBSCURED AS THE FRONT DISSIPATES OVER THE CASCADES. CONDITIONS OVER
THE EAST SIDE WILL CONTINUE TO HOVER BETWEEN MVFR AND VFR CEILINGS.
GUSTY WINDS WILL CONTINUE THROUGH THE WEDNESDAY. RAIN WILL TURN TO
SNOW BY MID MORNING WEDNESDAY.
HYDROLOGY...
HEAVY RAINS OVER THE PAST SEVERAL DAYS HAVE RESULTED
IN SIGNIFICANT RISES IN MANY STREAMS AND RIVERS IN THE AREA. FLOOD
WARNINGS AND WATCHES REMAIN IN EFFECT ALONG THE
COAST...PARTICULARLY ALONG THE COQUILLE AND CHETCO RIVERS.
PRECIPITATION HAS DECREASED...BUT RIVERS WILL CONTINUE TO RESPOND
TO THE HEAVY INFLUX OF WATER THROUGH AT LEAST THURSDAY. THE
COQUILLE RIVER AT COQUILLE...AND THE SOUTH FORK OF THE COQUILLE AT
MYRTLE POINT HAVE REACHED FLOOD STAGE...BUT HAVE BEGUN TO LEVEL
OFF.
ANOTHER ROUND OF MODERATE TO HEAVY RAIN IS FORECAST TO OCCUR
TONIGHT AND THE FIRST HALF OF TOMORROW. HOWEVER...DUE TO THE
RELATIVELY LIGHTER RAIN AMOUNTS THAT ARE EXPECTED...THERE SHOULD
BE LITTLE ADDITIONAL IMPACT TO STREAMFLOWS. THAT BEING SAID...MOST
STREAMS AND RIVERS WEST OF THE CASCADES WILL REMAIN AT INCREASED
FLOW THROUGH THE NEXT SEVERAL DAYS.
&&
.MFR WATCHES/WARNINGS/ADVISORIES...
OR...FLOOD WATCH UNTIL 1 AM PST WEDNESDAY FOR ORZ021-023.
WIND ADVISORY UNTIL 4 PM PST WEDNESDAY FOR ORZ030-031.
CA...WIND ADVISORY UNTIL 4 PM PST WEDNESDAY FOR CAZ085.
PZ...SMALL CRAFT ADVISORY FOR WINDS UNTIL 8 PM PST THIS EVENING FOR
PZZ350-356-370-376.
GALE WARNING FROM 8 PM THIS EVENING TO 7 AM PST WEDNESDAY FOR
PZZ350-356-370-376.
HAZARDOUS SEAS WARNING UNTIL 4 PM PST WEDNESDAY FOR
PZZ350-356-370-376.
BPN/MSOPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1255 PM PST TUE NOV 20 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1253 PM HEAVY RAIN 1 N ROSEBURG 43.23N 123.36W
11/20/2012 M3.68 INCH DOUGLAS OR TRAINED SPOTTER
STORM TOTAL PRECIPITATION SINCE MIDNIGHT MONDAY.
1253 PM HEAVY RAIN 11 NNW MEDFORD 42.48N 122.95W
11/20/2012 M2.06 INCH JACKSON OR TRAINED SPOTTER
24 HOUR RAINFALL
&&
SPILDEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
206 PM PST TUE NOV 20 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0145 PM HEAVY RAIN 1 SSW OBRIEN 42.05N 123.71W
11/20/2012 M1.02 INCH JOSEPHINE OR TRAINED SPOTTER
7-HOUR TOTAL SINCE 700 AM PST. SPOTTER INDICATES STORM
TOTAL OF 5.74 INCHES SINCE SATURDAY.
&&
SPILDEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
322 PM PST TUE NOV 20 2012
...TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
...DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 PM HEAVY RAIN 2 WSW WILDERVILLE 42.38N 123.50W
11/20/2012 M3.18 INCH JOSEPHINE OR TRAINED SPOTTER
HEAVY RAIN DURATION 24 HOURS
&&
IRIS SYSTEMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
328 PM PST TUE NOV 20 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0327 PM HEAVY RAIN 2 WSW OBRIEN 42.06N 123.73W
11/20/2012 M5.00 INCH JOSEPHINE OR TRAINED SPOTTER
24 HOUR RAINFALL AMOUNT.
&&
DWPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
501 PM PST TUE NOV 20 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0459 PM HEAVY RAIN 2 N CAVE JUNCTION 42.19N 123.65W
11/20/2012 M3.25 INCH JOSEPHINE OR TRAINED SPOTTER
24 HOUR RAINFALL THROUGH 430 PM PST
0459 PM HEAVY RAIN 5 SE CAVE JUNCTION 42.11N 123.58W
11/20/2012 M2.60 INCH JOSEPHINE OR TRAINED SPOTTER
24 HOUR RAINFALL ENDING AT 400 PM PST
0459 PM HEAVY RAIN 2 E SCOTTSBURG 43.66N 123.78W
11/20/2012 M3.00 INCH DOUGLAS OR TRAINED SPOTTER
24 HOUR RAINFALL ENDING AT 400 PM PST. STORM TOTAL
PRECIPITATION OF 5.75 INCHES.
&&
SPILDEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
531 PM PST TUE NOV 20 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0400 PM HEAVY RAIN 3 ESE SELMA 42.26N 123.57W
11/20/2012 M3.25 INCH JOSEPHINE OR TRAINED SPOTTER
24 HOUR TOTAL.
0500 PM HEAVY RAIN 3 S BANDON 43.07N 124.42W
11/20/2012 M6.80 INCH COOS OR TRAINED SPOTTER
57 HOUR TOTAL FROM 8AM SUNDAY.
&&
DWThe national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
The Coquille River at Coquille exceeded minor flood stage (21.0 feet) at 20/1800 PST, exceeded moderate flood stage (23.0 feet) at 21/0330 PST, fell below 23.0 feet at around 22/0415 PST, and fell below 21.0 feet at 22/2100 PST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2012Every state in 2012This day in weather historyWarnings in Oregon, November 2012
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 418428.