Low pressure in the Mississippi Valley strengthened as it moved into the Ohio Valley early on Tuesday, February 9th. As the system pulled out of the region Tuesday night, colder air on strong winds brought additional accumulations with blowing and drifting snow.
Every event with a place to put it; 5 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 ILN wrote it up.
Low pressure in the Mississippi Valley strengthened as it moved into the Ohio Valley early on Tuesday, February 9th. Snow began on Monday night and spread northeast early on Tuesday.As the system pulled out of the region Tuesday night, colder air on strong winds brought additional accumulations with blowing and drifting snow.
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 Wilmington, OH wrote its last area forecast discussion before the first event at Feb 9, 1:13 AM EST, 47 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
113 AM EST TUE FEB 9 2010
.SYNOPSIS...
SIGNIFICANT SNOW ACCUMULATIONS ARE FORECAST FOR TONIGHT AND TUESDAY
AS A VIGOROUS LOW PRESSURE SYSTEM TRAVELS ACROSS THE OHIO VALLEY.
SNOW AND BLUSTERY WINDS WILL AFFECT THE AREA TUESDAY NIGHT AND
WEDNESDAY AS THE LOW CONTINUES TO THE ATLANTIC COAST. HIGH
PRESSURE AND A COLD DRY AIRMASS WILL FOLLOW THE WINTER STORM ON
THURSDAY.
&&
.NEAR TERM /UNTIL 6 AM THIS MORNING/...
RADAR MOSAIC AND SFC OBSERVATIONS WERE INDICATING SNOWFALL FROM
NRN IL...SW INTO FAR SWRN INDIANA AND WRN KY. STRONG...MOIST ASCENT
AHEAD OF APPROACHING SFC LOW WILL CAUSE SNOW TO INCREASE IN COVERAGE
AND MOVE NE ACRS THE FORECAST AREA OVERNIGHT. CURRENT FORECAST IS
IN PRETTY GOOD SHAPE...SO WILL ONLY BE MAKING SOME MINOR TWEAKS TO
TEMPERATURES AND TIMING OF SNOW ONSET.
&&
.SHORT TERM /6 AM THIS MORNING THROUGH WEDNESDAY NIGHT/...
SNOW WILL CONTINUE THROUGH THE DAY ON TUESDAY. RAIN WILL CUT INTO
ACCUMULATIONS IN SOUTHERN COUNTIES DURING THE AFTERNOON WHEN
SLIGHTLY ABOVE FREEZING TEMPERATURES WILL PUSH UP FROM THE SOUTH.
EXPECT AS MUCH AS 5 ADDITIONAL INCHES IN NORTHWESTERN
COUNTIES...RANGING DOWN AS LOW AS AN INCH OF NEW SNOW IN FAR
SOUTHERN LOCATIONS.
A DRY SLOT MOVING THROUGH KENTUCKY AND SOUTHERN OHIO WILL ALLOW
FOR LOWER AMOUNTS OF SNOW THERE TUESDAY NIGHT...THOUGH UP TO 3
ADDITIONAL INCHES ARE EXPECTED IN WEST CENTRAL OHIO. WINDS WILL
PICK UP BY WEDNESDAY MORNING...WITH GUSTS AS HIGH AS 40 MPH
CAUSING CONSIDERABLE BLOWING AND DRIFTING SNOW. ANOTHER BURST OF
SNOW IS ANTICIPATED FOR WEDNESDAY IN THE STRONG NORTHWEST
BACKLASH BEHIND THE LOW...ENHANCED BY MOISTURE FROM THE GREAT
LAKES. STEADY SNOW WILL TAPER TO SCATTERED SNOW SHOWERS BY
WEDNESDAY NIGHT WHEN THE LOW WILL BE OFF THE ATLANTIC COAST.
&&
.LONG TERM /THURSDAY THROUGH MONDAY/...
ANY REMAINING PRECIPITATION SHOULD DIMINISH ON THURSDAY AS LOW LEVEL
WINDS BACK DUE TO HIGH PRESSURE RIDGING IN FROM THE WEST. NORTHWEST
FLOW ALOFT WILL PREDOMINATE THROUGH THE PERIOD. DIFFICULT TO TIME
WEAK DISTURBANCES DROPPING SOUTHEAST IN THIS PATTERN COULD BRING
SOME SNOW SHOWERS AND/OR FLURRIES AT JUST ABOUT ANY POINT. APPEARS
THAT A STRONGER SYSTEM WILL MOVE TOWARDS THE REGION SUNDAY
NIGHT/MONDAY. BUT PLENTY OF UNCERTAINTY THAT FAR OUT IN THE
FORECAST. SO LIMITED TO LOW CHANCE POPS. BELOW NORMAL TEMPERATURES
WILL PERSIST THROUGH THE PERIOD.
&&
.AVIATION /06Z TUESDAY THROUGH SATURDAY/...
MODELS CONTINUE TO BE IN AGREEMENT IN LIFTING DEEPENING LOW FM THE
LOWER MS VALLEY TO E OF CVG AT 18Z. THE LOW CONTINUES NE TO NR CMH
BY 00Z WED.
STRONG ISENTROPIC LIFT AHEAD OF THE LOW HAS PUSHED THE NRN EDGE OF
THE SNOW INTO THE SRN TAFS. MOVED THE START TIME OF SNOW UP A
COUPLE OF HOURS AT ALL LOCATIONS. KEPT THE HEAVIEST SNOWS DURING
THE MORNING HOURS. ALSO KEPT PCPN ALL SNOW AT ALL TAFS. 1000-850
CRITICAL THICKNESS LINE PUSHES CLOSE TO I-71...BUT EVEN IF LITTLE RA
MIXES IN LATER THIS AFTN...FEEL THE MAJORITY OF THE PCPN WILL BE
SN.
AS LOW PASSES N OF THE TAFS...THE SN SHOULD TAPER DOWN IF NOT
STOP. THIS SHOULD BE ESPECIALLY TRUE IN THE SRN TAFS. LIFTED THE
VSBYS TO 6 AT CVG/LUK AND ILN DURING THE LATE AFTN.
WITH PASSAGE OF LOW/CDFNT...CAA WILL KICK IN AND WINDS WILL SHIFT
TO THE W/SW AND BECOME GUSTY. WRAP AROUND SHSN ARE EXPECTED FOR
TNGT. BLOWING SNOW MAY REDUCE VSBYS AS WINDS GUST OVER 25KTS.
OUTLOOK...MVFR/IFR CIGS/VSBYS LIKELY TUESDAY NIGHT INTO WEDNESDAY.
MVFR CIGS POSSIBLE WEDNESDAY NIGHT INTO THURSDAY.
&&
.ILN WATCHES/WARNINGS/ADVISORIES...
OH...WINTER STORM WARNING UNTIL 6 PM EST WEDNESDAY FOR OHZ026-034-
035-042>044-051>053-060>062-070>074-077>082-088.
WINTER STORM WARNING FROM 4 AM EARLY THIS MORNING TO 6 PM EST
WEDNESDAY FOR OHZ045-046-054>056-063>065.
KY...WINTER STORM WARNING UNTIL 6 PM EST WEDNESDAY FOR KYZ089>100.
IN...WINTER STORM WARNING UNTIL 6 PM EST WEDNESDAY FOR INZ050-058-
059-066-073>075-080.
&&
SYNOPSIS...CONIGLIO/HICKMAN
NEAR TERM...CONIGLIO/HICKMAN
SHORT TERM...CONIGLIO
LONG TERM...
AVIATION...SITESHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 419 PM EST MON FEB 8 2010 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>044- 051>053-060>062-070>074-077>082-088-092130- WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-OHIO- SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT- PENDLETON-BRACKEN-ROBERTSON-MASON-LEWIS-HARDIN-MERCER-AUGLAIZE-DARKE- SHELBY-LOGAN-MIAMI-CHAMPAIGN-CLARK-PREBLE-MONTGOMERY-GREENE-BUTLER- WARREN-CLINTON-ROSS-HOCKING-HAMILTON-CLERMONT-BROWN-HIGHLAND-ADAMS- PIKE-SCIOTO- 419 PM EST MON FEB 8 2010 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL INDIANA...SOUTHEAST INDIANA...NORTHEAST KENTUCKY...NORTHERN KENTUCKY...CENTRAL OHIO...MIAMI VALLEY OF OHIO...SOUTH CENTRAL OHIO...SOUTHWEST OHIO AND WEST CENTRAL OHIO. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SNOW AND ICE ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE. OHZ045-046-054>056-063>065-092130- UNION OH-DELAWARE-MADISON-FRANKLIN OH-LICKING-FAYETTE OH-PICKAWAY- FAIRFIELD- 419 PM EST MON FEB 8 2010 ...WINTER STORM WARNING IN EFFECT FROM 4 AM TUESDAY TO 6 PM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL OHIO. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SNOW AND ICE ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE.
The national radar mosaic for the moment the first event began.
5 heavy snow. Local standard time, as filed.
The rainfall observer in Aurora recorded 9.6 inches of snowfall on the morning of the 10th. By the afternoon of the 9th, New Alsace had reported 5 inches of snowfall.
Brookville received 5 inches of snow by early Tuesday morning.
The county garage in Rising Sun measured 6 inches of snow Tuesday evening.
The rainfall observer in Osgood measured 9 inches of snowfall on the morning of the 10th. By noon on the 9th, a report of 6 inches of snow came from Holton.
In Vevay, 5 inches of snow was measured early Tuesday morning, with 6 inches measured later in the day.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2010Every state in 2010This day in weather historyWarnings in Indiana, February 2010
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: 210917, 210918, 210919, 210920, 210921.