Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 12:07 pm
Absolute Vorticity
Ohio Valley Weather Observation & Discussion
https://absolutevorticity.com/
February 18-19th 2025 High Ratio Snow Event
Page 10 of 10
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 12:48 pm
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 2:52 pm
Wayne-Fayette-Union-Franklin-Ripley-Dearborn-Ohio-Switzerland-
Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-
Bracken-Robertson-Mason-Lewis-Hardin-Mercer-Auglaize-Darke-Shelby-
Logan-Union-Delaware-Miami-Champaign-Clark-Madison-Franklin-
Licking-Preble-Montgomery-Greene-Fayette-Pickaway-Fairfield-
Butler-Warren-Clinton-Ross-Hocking-Hamilton-Clermont-Brown-
Highland-Adams-Pike-Scioto-
Including the cities of Alexandria, Urbana, Middletown, Tipp
City, Brooksville, Kenton, West Jefferson, West Union,
Pickerington, Greenfield, Camden, Winchester, Hillsboro,
Bellevue, Connersville, Dayton, Marysville, Day Heights,
Williamstown, Oakbrook, Aberdeen, Celina, New Bremen, Versailles,
Batesville, Newark, Butler, Camp Dix, Aurora, Brookville, St.
Marys, Milford, Washington Court House, Springboro, Piqua,
Minster, Sidney, Liberty, Carrollton, Lebanon, Wapakoneta,
Downtown Dayton, Crittenden, Greendale, Piketon, Lawrenceburg,
Vanceburg, Delaware, Owenton, Fairfield, Mount Orab, Falmouth,
Hamilton, Circleville, Eaton, Beavercreek, Warsaw, Augusta,
Florence, Bright, Georgetown, Dillsboro, Vevay, Plain City,
London, Kettering, Ripley, Xenia, Downtown Columbus, Troy,
Osgood, Covington, Portsmouth, Erlanger, Downtown Cincinnati,
Springfield, Rising Sun, Fort Thomas, Dry Ridge, Wilmington,
Withamsville, Ada, Mulberry, Maysville, Fairborn, Franklin,
Chillicothe, Mount Repose, Independence, Hidden Valley, Peebles,
Pike Lake, Lancaster, Mount Carmel, Coldwater, Tollesboro,
Waverly, Wheelersburg, Manchester, Blanchester, Highland Heights,
Mount Olivet, Seaman, Logan, Summerside, Bellefontaine, Mason,
Richmond, Greenville, Newport, Head Of Grassy, Oxford,
Burlington, Landen, Milan, and West College Corner
250 PM EST Wed Feb 19 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 11 AM
EST THURSDAY...
* WHAT...Snow expected. Total snow accumulations up to one inch.
* WHERE...Portions of east central and southeast Indiana, northeast
and northern Kentucky, and central, south central, southwest, and
west central Ohio.
* WHEN...From 8 PM this evening to 11 AM EST Thursday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday morning commute.
Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-
Bracken-Robertson-Mason-Lewis-Hardin-Mercer-Auglaize-Darke-Shelby-
Logan-Union-Delaware-Miami-Champaign-Clark-Madison-Franklin-
Licking-Preble-Montgomery-Greene-Fayette-Pickaway-Fairfield-
Butler-Warren-Clinton-Ross-Hocking-Hamilton-Clermont-Brown-
Highland-Adams-Pike-Scioto-
Including the cities of Alexandria, Urbana, Middletown, Tipp
City, Brooksville, Kenton, West Jefferson, West Union,
Pickerington, Greenfield, Camden, Winchester, Hillsboro,
Bellevue, Connersville, Dayton, Marysville, Day Heights,
Williamstown, Oakbrook, Aberdeen, Celina, New Bremen, Versailles,
Batesville, Newark, Butler, Camp Dix, Aurora, Brookville, St.
Marys, Milford, Washington Court House, Springboro, Piqua,
Minster, Sidney, Liberty, Carrollton, Lebanon, Wapakoneta,
Downtown Dayton, Crittenden, Greendale, Piketon, Lawrenceburg,
Vanceburg, Delaware, Owenton, Fairfield, Mount Orab, Falmouth,
Hamilton, Circleville, Eaton, Beavercreek, Warsaw, Augusta,
Florence, Bright, Georgetown, Dillsboro, Vevay, Plain City,
London, Kettering, Ripley, Xenia, Downtown Columbus, Troy,
Osgood, Covington, Portsmouth, Erlanger, Downtown Cincinnati,
Springfield, Rising Sun, Fort Thomas, Dry Ridge, Wilmington,
Withamsville, Ada, Mulberry, Maysville, Fairborn, Franklin,
Chillicothe, Mount Repose, Independence, Hidden Valley, Peebles,
Pike Lake, Lancaster, Mount Carmel, Coldwater, Tollesboro,
Waverly, Wheelersburg, Manchester, Blanchester, Highland Heights,
Mount Olivet, Seaman, Logan, Summerside, Bellefontaine, Mason,
Richmond, Greenville, Newport, Head Of Grassy, Oxford,
Burlington, Landen, Milan, and West College Corner
250 PM EST Wed Feb 19 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 11 AM
EST THURSDAY...
* WHAT...Snow expected. Total snow accumulations up to one inch.
* WHERE...Portions of east central and southeast Indiana, northeast
and northern Kentucky, and central, south central, southwest, and
west central Ohio.
* WHEN...From 8 PM this evening to 11 AM EST Thursday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday morning commute.
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 3:11 pm
I’d like to know what criteria they go by? Up to an inch is what we had this morning. Sooo why tomorrow and not this morning? So weird!
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 4:11 pm
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 4:22 pm
I agree guys. An advisory was needed if you're going to go on an impact basis which is part of the criteria nowadays that most NWS offices have adopted. In addition to the normal stuff we already know, (an advisory is typically a 1-3" snowfall and 4"+ is reserved for the warning), they are also factoring in impacts like the AM or PM commute. Based on impacts alone, an advisory should have been issued for this morning. No doubt about it. Now they are finally reacting correctly for tonight.
Afternoon AFD:
.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
Mid level low pressure to drop southeast from the Upper MS
Valley across the Ohio Valley overnight into Thursday. As the
closed low pivots into the Ohio Valley later this evening
light snow to develop into Eastern Indiana and Western Ohio -
spreading east across the entire area by midnight. With cold
temperatures in place - snow to liquid ratios of 18:1 and 20:1
will exist. Given these high snow ratios, and cold temperatures,
expect snowfall between 0.5 and 1.5 inches by morning. Cold
pavement temperatures will allow the snow to stick with the
potential for slick spots and travel impacts. A winter weather
advisory has been issued from 8 PM this evening to 11 AM
Thursday morning.
Cold overnight lows to range from near 10 to 15 degrees.
Afternoon AFD:
.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
Mid level low pressure to drop southeast from the Upper MS
Valley across the Ohio Valley overnight into Thursday. As the
closed low pivots into the Ohio Valley later this evening
light snow to develop into Eastern Indiana and Western Ohio -
spreading east across the entire area by midnight. With cold
temperatures in place - snow to liquid ratios of 18:1 and 20:1
will exist. Given these high snow ratios, and cold temperatures,
expect snowfall between 0.5 and 1.5 inches by morning. Cold
pavement temperatures will allow the snow to stick with the
potential for slick spots and travel impacts. A winter weather
advisory has been issued from 8 PM this evening to 11 AM
Thursday morning.
Cold overnight lows to range from near 10 to 15 degrees.
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 4:28 pm
SPC mesopage late this afternoon is showing some weak pressure falls from Iowa, SE into ILL and down into Central IN. This is the path the upper low should take, then it swings eastward from there thru Ohio in the morning. The upper low is over MN / Iowa region at this time. We have moisture at 700 MB over ILL and the Western half of IN so once the upper low drops a little more south and creates some lift out ahead of it, snow showers should rapidly develop in the next few hours to our West. Radar is showing a band of snow developing to the NW of St. Louis. This maybe aloft right now but something is starting to get going. That area of snow should expand in coverage and intensity as the evening progresses.
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 5:07 pm
1.2" at CVG so far from this event. We'll see what tonight can tack on.
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 5:26 pm
1.2” of snow from .03” of precipitation is a 40:1 ratio! That’s crazy!
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 6:29 pm
I sense a surprise is coming tonight. My forecast is 2 to 4 inches.
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 6:50 pm
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 7:08 pm
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 10:11 pm
4-inch bands in Indianapolis 
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Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 10:21 pm
4 -7 inches total in Indianapolis from tonights upper level low, lol
Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
1010 PM EST Wed Feb 19 2025
INZ037-046-047-054-055-200800-
/O.NEW.KIND.WW.Y.0008.250220T0310Z-250220T0800Z/
Boone-Hendricks-Marion-Morgan-Johnson-
Including the cities of Plainfield, Mooresville, Danville,
Franklin, Martinsville, Indianapolis, Zionsville, Lebanon,
Greenwood, and Brownsburg
1010 PM EST Wed Feb 19 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 AM EST THURSDAY...
* WHAT...Snow. Snow of 2 to 4 inches inches has occurred in the
advisory area. An additional snow accumulation of 2 to 3 inches is
possible.
* WHERE...Boone, Hendricks, Johnson, Marion, and Morgan Counties.
* WHEN...Until 3 AM EST Thursday.
* IMPACTS...Plan on slippery road conditions.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
&&
$$
JP
Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
1010 PM EST Wed Feb 19 2025
INZ037-046-047-054-055-200800-
/O.NEW.KIND.WW.Y.0008.250220T0310Z-250220T0800Z/
Boone-Hendricks-Marion-Morgan-Johnson-
Including the cities of Plainfield, Mooresville, Danville,
Franklin, Martinsville, Indianapolis, Zionsville, Lebanon,
Greenwood, and Brownsburg
1010 PM EST Wed Feb 19 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 AM EST THURSDAY...
* WHAT...Snow. Snow of 2 to 4 inches inches has occurred in the
advisory area. An additional snow accumulation of 2 to 3 inches is
possible.
* WHERE...Boone, Hendricks, Johnson, Marion, and Morgan Counties.
* WHEN...Until 3 AM EST Thursday.
* IMPACTS...Plan on slippery road conditions.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
&&
$$
JP
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Wed Feb 19, 2025 11:04 pm
Hopefully a band developes over us
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Thu Feb 20, 2025 4:21 am
I got around an inch here... no surprises IMBY unfortunately. CVG picked up a total of 1.4" for 2/19. We'll see what they picked up since midnight once they release the information.
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Thu Feb 20, 2025 5:37 am
CVG picked up 0.04" of QPF so I imagine with temps in the 15 to 17 degree range, that SLR's were probably 30:1 or so again. I expect CVG to record 1 to 1.5" range.
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Thu Feb 20, 2025 5:39 am
Roads were terrible in my hood but KY 18 was good and the interstates were good until I got N of Reagan Hwy. It was snowing again and the lanes were becoming snow covered again for a few miles. Roads around the office here in Mason are also terrible.
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Thu Feb 20, 2025 7:22 am
12 degrees as of 7am. New QPF total for the event at CVG is 0.05"
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Thu Feb 20, 2025 8:09 am
CVG has fallen to 10 now... still a few flurries out there too.
Re: February 18-19th 2025 High Ratio Snow Event
Posted: Thu Feb 20, 2025 8:33 am
Code: Select all
Preliminary Local Storm Report
National Weather Service Wilmington OH
804 AM EST Thu Feb 20 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM Snow 4 SE Tollesboro 38.53N 83.52W
02/20/2025 M1.8 Inch Lewis KY CO-OP Observer
CO-OP Observer station RIBK2 RIBK2.
0700 AM Snow 4 SE Tollesboro 38.53N 83.52W
02/20/2025 M1.8 Inch Lewis KY Cocorahs
Cocorahs station KY-LW-3 Ribolt 3.0 S.
0600 AM Snow Northbrook 39.25N 84.58W
02/20/2025 M1.7 Inch Hamilton OH Cocorahs
Cocorahs station OH-HM-13 Cincinnati 8.9 NW.
0630 AM Snow 2 NW Bradford 40.15N 84.46W
02/20/2025 M1.6 Inch Darke OH Cocorahs
Cocorahs station OH-DR-1 Bradford 2.3 NW.
0636 AM Snow Minster 40.39N 84.38W
02/20/2025 M1.6 Inch Auglaize OH Public
0700 AM Snow 5 ENE Russia 40.27N 84.32W
02/20/2025 M1.5 Inch Shelby OH Cocorahs
Cocorahs station OH-SH-11 Houston 1.3 NNE.
0700 AM Snow 3 E Mowrystown 39.04N 83.70W
02/20/2025 M1.5 Inch Highland OH CO-OP Observer
CO-OP Observer station WNCO1 Winchester 7
NNW.
0700 AM Snow 3 E Mowrystown 39.04N 83.70W
02/20/2025 M1.5 Inch Highland OH Cocorahs
Cocorahs station OH-HG-9 Winchester 7.4 NNW.
0631 AM Snow New Bremen 40.44N 84.38W
02/20/2025 M1.3 Inch Auglaize OH Public
0700 AM Snow 2 W Independence 38.96N 84.59W
02/20/2025 M1.3 Inch Kenton KY Cocorahs
Cocorahs station KY-KN-27 Independence 2.2
W.
0600 AM Snow 1 ESE Verona 39.90N 84.47W
02/20/2025 M1.1 Inch Montgomery OH Cocorahs
Cocorahs station OH-MY-106 Brookville 5.0
NNW.
1205 AM Snow 2 E Union 38.95N 84.63W
02/20/2025 M1.1 Inch Boone KY Cocorahs
Cocorahs station KY-BN-18 Florence 3.2 SSE.
0700 AM Snow 2 SSE Maineville 39.29N 84.22W
02/20/2025 M1.0 Inch Warren OH Cocorahs
Cocorahs station OH-WR-40 Loveland 3.6 ENE.
0600 AM Snow 3 W Ostrander 40.27N 83.27W
02/20/2025 M1.0 Inch Union OH Cocorahs
Cocorahs station OH-UN-18 Marysville 6.1
ENE.
0700 AM Snow 2 ENE Centerville 39.64N 84.13W
02/20/2025 M1.0 Inch Montgomery OH Cocorahs
Cocorahs station OH-MY-96 Centerville 0.7 E.
0636 AM Snow Cherry Grove 39.08N 84.33W
02/20/2025 M1.0 Inch Hamilton OH Cocorahs
Cocorahs station OH-HM-37 Cherry Grove 0.4
NW.
0700 AM Snow 2 WSW Versailles 40.22N 84.51W
02/20/2025 M1.0 Inch Darke OH Cocorahs
Cocorahs station OH-DR-7 Versailles 1.6 WSW.
0730 AM Snow 1 WSW Augusta 38.77N 84.01W
02/20/2025 M1.0 Inch Bracken KY CO-OP Observer
CO-OP Observer station AGUK2 Augusta 2.
0700 AM Snow 2 E Richmond 39.82N 84.84W
02/20/2025 M1.0 Inch Wayne IN Cocorahs
Cocorahs station IN-WN-25 Richmond 2.4 E.
0700 AM Snow Liberty 39.63N 84.93W
02/20/2025 M1.0 Inch Union IN Cocorahs
Cocorahs station IN-UN-3 Liberty 0.2 SW.
0700 AM Snow Liberty 39.63N 84.93W
02/20/2025 M1.0 Inch Union IN CO-OP Observer
CO-OP Observer station LBTI3 Liberty.