An Alberta Clipper produced a brief burst of snow late February 5th into the early morning hours of February 6th. Total snow accumulations generally ranged between 3 and 6 inches.
Every event with a place to put it; 18 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 IWX wrote it up.
An Alberta Clipper produced a brief burst of snow late February 5th into the early morning hours of February 6th. Total snow accumulations generally ranged between 3 and 6 inches.
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 Northern Indiana wrote its last area forecast discussion before the first event at Feb 5, 1:56 PM EST, 4 hours 4 minutes earlier.
Area Forecast Discussion
National Weather Service Northern Indiana
156 PM EST Mon Feb 5 2018
.SYNOPSIS...
Issued at 1215 PM EST Mon Feb 5 2018
Widespread snow is expected tonight with a quick moving system
with 1 to 4 inches of snow expected by daybreak Tuesday morning.
Another round of snow with another system Tuesday night with
an additional 1 to 3 inches. Cold temperatures remain in place
through the end of the week with another potential for snow Friday
into Saturday.
&&
.SHORT TERM...(This Evening through Tuesday)
Issued at 156 PM EST Mon Feb 5 2018
Shortwave over NE/IA will translate eastward through the the Lower
Great Lakes tonight bringing a 6-7 hour period of light-moderate
snow to the entire forecast area. This Snow likely develops into nw
IN/sw Lower MI btw 22-00z and then points east-southeast through the
evening and early overnight. Model QPF overall averaging from near a
0.10" in nw OH up to 0.20" in nw IN. Snow ratios are a tough call
given a deep DGZ and good supersaturation. Greatest omega centered
just above this layer and slight weakening trend to
forcing/mesobanding with eastward progression are negatives for
really high snow ratios. Will continue to carry 16-18:1 ratios
(climo is 12:1), which results in 1-3" east of I-69 and 2-4"
totals west of I-69. Could see a few locations see snowfall totals
into the 4-5" range if latest HRRR/RAP iterations are correct
with a more intense/narrow snowband along an area of stronger 925
mb fgen forcing near or just south of US 30 in Indiana this
evening.
Chilly wnw flow behind this wave may keep some light lake effect
snows going into Tuesday morning before low level ridging briefly
moves in. Dry and continued cold otherwise on Tuesday with some
partial clearing anticipated.
&&
.LONG TERM...(Tuesday Night through Monday)
Issued at 156 PM EST Mon Feb 5 2018
Pattern will remain active/cold with several more opportunties for
snow as numerous shortwaves ripple through broad upper trough in
place across the Midwest/Great Lakes.
Confidence continues to increase for another light snow event
Tuesday night into Wednesday morning as a southern stream shortwave
ejects out of the rockies and gets absorbed into the next northern
stream impulse digging toward the Great Lakes region...with a strung
out sfc reflection ene through the TN Valley. Lacking moisture
return this far north, combined with progressive/open nature of the
larger scale wave, suggest a sub-advisory (1-3") type snowfall.
Rinse and repeat in wake of this system into Wednesday-Wednesday
night with below normal temps and chances for light lake effect snow
in favored nw flow belts.
Additional sheared/low amplitude pacific perturbations and
increasing right entrance upper jet support will likely combine to
generate a rather active baroclinic zone from the Upper Midwest east
into the Lower Great Lakes late this week. The Fgen and gentle
isentropic upglide into this frontal zone is modeled to produce a
swath of steady/accumulating snow later Thursday into Friday, though
models continue to waver on positioning (more north into WI/MI or
over the local area) and timing making any details this far out
fuzzy. A frontal wave may develop along this boundary bringing
more appreciable forcing/mixed pcpn sometime this weekend.
&&
.AVIATION...(For the 18Z TAFS through 18Z Tuesday Afternoon)
Issued at 1215 PM EST Mon Feb 5 2018
Light winds and VFR conditions expected at the start of the period
before a quick moving system reaches the terminals by 00z this
evening. Light to moderate snow expected overnight dropping flight
criteria into LIFR at SBN and low IFR at FWA. Gradual improvement
as snow ends by daybreak with a return to VFR at both terminals by
mid morning.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...Winter Weather Advisory from 6 PM EST /5 PM CST/ this evening to
2 AM EST /1 AM CST/ Tuesday for INZ003>005-012>015-020-022.
Winter Weather Advisory from 7 PM this evening to 2 AM EST
Tuesday for INZ006-008-016>018-023>025.
MI...Winter Weather Advisory from 6 PM this evening to 2 AM EST
Tuesday for MIZ077>079.
OH...NONE.
LM...NONE.
&&
SYNOPSIS...Heidelberger
SHORT TERM...Steinwedel
LONG TERM...Steinwedel
AVIATION...Heidelberger
Visit us at www.weather.gov/iwx
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www.youtube.com/NWSNorthernIndianaHazardous Weather Outlook...UPDATED National Weather Service Northern Indiana 208 PM EST Mon Feb 5 2018 INZ003>006-008-012>018-020-022>025-MIZ077>079-061915- La Porte-St. Joseph IN-Elkhart-Lagrange-Noble-Starke-Pulaski- Marshall-Fulton IN-Kosciusko-Whitley-Allen IN-White-Cass IN-Miami- Wabash-Huntington-Berrien-Cass MI-St. Joseph MI- 208 PM EST Mon Feb 5 2018 /108 PM CST Mon Feb 5 2018/ This hazardous weather outlook is for portions of southwest Michigan and northern Indiana. .DAY ONE...This afternoon and Tonight Snow is expected this evening into the early overnight with totals between 2 and 4 inches. Difficult travel conditions are expected. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday An additional 1 to 3 inches of snow is expected Tuesday night into early Wednesday morning. Additional snow accumulations will be possible Thursday night through Friday night. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. && Stay tuned to NOAA Weather Radio for further details or updates...or check our web site at weather.gov/iwx INZ007-009-026-027-032>034-MIZ080-081-OHZ001-002-004-005-015-016-024- 025-061915- Steuben-De Kalb-Wells-Adams-Grant-Blackford-Jay-Branch-Hillsdale- Williams-Fulton OH-Defiance-Henry-Paulding-Putnam-Van Wert-Allen OH- 208 PM EST Mon Feb 5 2018 This hazardous weather outlook is for portions of northern Indiana... northwest Ohio and southwest Michigan. .DAY ONE...This afternoon and Tonight Snow is expected this evening into the early overnight with totals between 1 and 3 inches. Difficult travel conditions are expected. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday An additional 1 to 3 inches of snow is expected Tuesday night into early Wednesday morning. Additional snow accumulations will be possible Thursday night through Friday night. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. && Stay tuned to NOAA Weather Radio for further details or updates...or check our web site at weather.gov/iwx LMZ043-046-061915- New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI- 208 PM EST Mon Feb 5 2018 This hazardous weather outlook is for portions of The Nearshore Waters of Southeastern Lake Michigan. .DAY ONE...This afternoon and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Small craft advisory conditions are likely at times throughout the next several days. && Stay tuned to NOAA Weather Radio for further details or updates...or check our web site at weather.gov/iwx
The national radar mosaic for the moment the first event began.
19 winter weather. Local standard time, as filed.
A quick 3 to 5 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 3 to 4 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 3 to 4 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 2 to 4 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 2 to 4 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 2 to 4 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 4 to 6 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 3 to 5 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
A quick 2 to 4 inches of snow created difficult travel conditions. There were accidents reported across the region, along with several school closings and delays on February 6th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2018Every state in 2018This day in weather historyWarnings in Indiana, February 2018
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: 730777, 730778, 730779, 730780, 730781, 730782, 730783, 730784, 730785, 730786, 730787, 730788, 730789, 730790, 730791, 730792, 730793, 730794, 730795.