Tropical moisture interacting with a slow-moving cold front produced widespread heavy rainfall across northeastern Oklahoma on October 8th with amounts from two to five inches common and amounts of five to seven inches locally. This heavy rainfall resulted in moderate flooding along the Baron Fork River near Eldon.
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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 TSA wrote it up.
Tropical moisture interacting with a slow-moving cold front produced widespread heavy rainfall across northeastern Oklahoma on October 8th with amounts from two to five inches common and amounts of five to seven inches locally. This heavy rainfall resulted in moderate flooding along the Baron Fork River near Eldon.
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 Tulsa, OK wrote its last area forecast discussion before the first event at Oct 9, 5:35 AM CST, 10 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
635 AM CDT FRI OCT 9 2009
.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KMLC/KXNA/KFYV/KFSM.
WIDESPREAD PREVAILING MVFR CONDITIONS EXIST AS MOISTURE CONTINUES
TO STREAM NORTHWARD BEHIND A COLD FRONT WHICH PASSED THROUGH
OVERNIGHT. AREAS OF IFR ARE ALSO NOTED WITHIN HEAVIER PRECIP...AND
ARE FORECAST TO REMAINS PRESENT THROUGH THE MORNING HOURS.
IMPROVING FLIGHT CONDITIONS ARE EXPECTED BY LATE AFTERNOON. FOG
POTENTIAL LOOKS HIGH FOR TONIGHT AND THIS FORECAST WILL START THE
TREND TOWARD POSSIBLE IMPACTS ESPECIALLY ACROSS KFYV/KXNA.
&&
.PREV DISCUSSION... /ISSUED 412 AM CDT FRI OCT 9 2009/
DISCUSSION...
WIDESPREAD HEAVY RAINFALL FROM YESTERDAY AFTERNOON THROUGH PRESENT
HAS LEFT SWATH OF 2-5 INCH AMOUNTS OVER MUCH OF THE FORECAST AREA
WITH HEAVY RAIN STILL FALLING ACROSS SOUTHEAST OKLAHOMA AND
NORTHWEST ARKANSAS. RAIN WILL GRADUALLY CONTINUE TO SHIFT SOUTH
WITH MOST AREAS DRY AFTER 18Z. WILL DROP COUNTIES ROUGHLY ALONG
AND NORTH OF I-44 FROM THE WATCH WITH FORECAST ISSUANCE AS ONLY
PATCHY LIGHT RAINFALL EXPECTED EARLY THIS MORNING. AREAS TO THE
SOUTH OF MLC-FYV WILL LIKELY SEE ANOTHER 1-3 INCHES OF RAIN
THROUGH 18Z.
COLD FRONT WILL CONTINUE TO PLUNGE THROUGH THE SOUTHERN AREAS
PRIOR TO 12Z AND SOME SUCH LOCATIONS HAVE ALREADY SEEN THE HIGH
TEMP FOR TODAY AS LINGERING CLOUD COVER AND COLD ADVECTION BRING
TEMPS DOWN CONSIDERABLY THIS MORNING WITH ONLY LIMITED RECOVERY.
POSSIBLE FOR A FEW BREAKS LATE THIS AFTERNOON OVER NORTHWEST AREAS
WHERE TEMPS MAY RECOVER LATE. IN ANY CASE WILL FORECAST HIGHS
BELOW GUIDANCE AND IN GENERAL WILL SIDE WITH THE SLIGHTLY COOLER
MET NUMBERS FOR TONIGHT. CONDITIONS UPSTREAM SUPPORT SOME
POTENTIAL FOR PATCHY FROST TONIGHT IN NORTHERN AREAS IF SKIES
REMAIN CLEAR...HOWEVER THE MOIST GROUND CONDITIONS LIKELY WILL
PREVENT THIS FROM OCCURRING. SOME POTENTIAL FOR DENSE FOG WILL
EXIST.
FORECAST DOES NOT GET ANY EASIER THIS WEEKEND AS A SHALLOW ARCTIC
AIRMASS MORE REMINISCENT OF MID JANUARY PLUNGES SOUTH THROUGH THE
PLAINS AND WILL ENTER THE CWA LATE SATURDAY. AS EXPECTED THE
MODELS ARE NOT HANDLING THIS SCENARIO WELL AT ALL AND MAY WELL BE
MODIFYING THE COLD AIR MUCH TOO QUICKLY SUNDAY. MORE LIKELY FOR
THIS TO HAPPEN FARTHER SOUTH AND EAST WHERE SHALLOW AIRMASS GETS
HUNG UP IN THE TERRAIN...BUT AREAS TO THE NORTH AND WEST WILL SEE
HIGH TEMPS ALMOST 30 DEGREES BELOW NORMAL WITH PERSISTENT LOW
CLOUDS. IF ENOUGH CLEARING CAN OCCUR...A WIDESPREAD FREEZE WOULD
SEEM LIKELY ACROSS MUCH OF THE NORTHERN AREAS BY SUNDAY MORNING AS
THIS AIRMASS IS COLDER THAN ANY WE HAVE SEEN THIS EARLY IN THE
SEASON IN A LONG TIME. HOWEVER...THIS IS A VERY UNCERTAIN
PROPOSITION AT THIS POINT. FOR THE TIME BEING HAVE LEANED HEAVILY
ON THE COOLER MET WHICH MAY EVEN BE A BIT TOO WARM.
AND NO...IT DOES NOT GET EASIER NEXT WEEK EITHER. EVENTUALLY THE
SHALLOW ARCTIC AIR SHOULD ERODE EARLY NEXT WEEK BUT ANOTHER
REINFORCING SHOT MAY COME DOWN MID WEEK. BUT AGAIN...THIS IS VERY
UNCERTAIN AS THE FLOW ALOFT IS MUCH MORE ZONAL IN NATURE BY THIS
TIME. WHAT APPEARS LIKELY IS A GRAY AND POSSIBLY WET WEEK WITH
TEMPS REMAINING SOMEWHAT BELOW NORMAL...JUST HOW MUCH REMAINS TO
BE SEEN. IN GENERAL WILL GO COOLER THAN MEX GUIDANCE THROUGH
WEDNESDAY...WITH A MORE SIGNIFICANT UPPER LEVEL SYSTEM POSSIBLE
THURSDAY LEADING TO A WARMER TREND WITH HIGHER THUNDERSTORM
CHANCES.
&&
.PRELIMINARY POINT TEMPS/POPS...
TUL 56 38 59 36 / 40 0 0 10
FSM 56 42 68 47 / 100 0 0 10
MLC 57 41 67 40 / 80 0 0 10
BVO 57 33 57 34 / 20 0 0 10
FYV 50 34 62 39 / 80 0 0 10
BYV 49 37 60 39 / 100 0 0 10
MKO 54 39 64 40 / 60 0 0 10
MIO 52 35 58 34 / 40 0 0 10
F10 57 39 63 38 / 60 0 0 10
HHW 56 44 66 47 / 100 0 0 10
&&
.TSA WATCHES/WARNINGS/ADVISORIES...
OK...FLOOD WATCH UNTIL 1 PM FRIDAY FOR OKZ049-OKZ053-OKZ063-OKZ065-
OKZ066-OKZ067-OKZ068-OKZ069-OKZ070-OKZ071-OKZ072-OKZ073-
OKZ074-OKZ075-OKZ076.
AR...FLOOD WATCH UNTIL 1 PM FRIDAY FOR ARZ001-ARZ002-ARZ010-ARZ011-
ARZ019-ARZ020-ARZ029.
&&
AVIATION...07<!doctype html>
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</html>The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
The Baron Fork River near Eldon rose above its flood stage of 18 feet at 6:45 a.m. CDT on October 9th. The river crested at 21.77 feet at 10:00 a.m. CDT on the 9th, resulting in moderate flooding. The river fell below flood stage at 6:30 p.m. CDT on the 9th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2009Every state in 2009This day in weather historyWarnings in Oklahoma, October 2009
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: 199447.