FXUS63 KIND 040246 AFDIND Area Forecast Discussion National Weather Service Indianapolis IN 946 PM EST Tue Feb 3 2026 .KEY MESSAGES... - Winter Weather Advisory remains in effect from 7AM to 7PM today across far SE counties, greatest chance for impacts during the afternoon. - Chances for above freezing highs late this week and again mid- next week && .FORECAST UPDATE... Issued at 946 PM EST Tue Feb 3 2026 Satellite trends show mid level clouds are having a difficult time eroding in southern parts of central Indiana owing to weakening flow and an upstream vort max moving towards the region. Low cloud deck continues to move south 15-20 kts across northern zones and will fill in the remainder of the clear skies in central zones by 05Z. Have gone more pessimistic with the cloud cover overnight as a result. The caveat is in the far NW/NC counties where a clearing/subsidence zone over southern lower MI should move SE and clip this region late tonight (after 09Z). In this region, have bumped down the overnight low temps and wind chills by a few degrees. For the rest of the forecast area, have maintained roughly a blended guidance for lows. Rest of the forecast is on track with no pops and winds generally 5-10 kts from the N-NE. && .SHORT TERM (This evening through Wednesday)... Issued at 305 PM EST Tue Feb 3 2026 Weak surface cyclogenesis has led to deepening low pressure over the southern Ohio Valley throughout today, of which is creating a narrow corridor of frontogenesis within southern Indiana. In return, banded snowfall has formed over this region, with moderate snow rates being observed. Further analysis on the specifics of this banded snowfall is in the mesoscale section at the top of the AFD. These snowbands are expected to continue throughout the afternoon and evening, but will likely be south of the central Indiana CWA within the next 3 hours. Still, a quick 1-2 inches is possible in places like Seymour and North Vernon before the snow ends. The Winter Weather Advisory remains in effect until 7PM, but this will likely be ended early once the snow exit to the SE. Overnight, cold air advection will push in cooler temperatures but a consistent broken to overcast stratus deck will likely limit diurnal cooling some with lows in the teens to near 10 degrees tomorrow morning. Tomorrow will have relatively quiet but cold weather as the bulk of the cooler airmass arrives beneath mid-level pressure gains. This should result in some clearing, but there will likely still be some mid to upper level cloud cover within a strong jet stream. && .LONG TERM (Wednesday night through Tuesday)... Issued at 305 PM EST Tue Feb 3 2026 An upper trough will be making its way eastward for the end of the week before more zonal upper flow moves over central Indiana. This weekend into next week may see some ridging at times but models lack clear agreement past this weekend. Generally temperatures will trend warmer than we have seen in several weeks. Highs on Friday are expected to be in the mid 30s to low 40s but a quick moving system will drop highs back to the 20s on Saturday before another warming trend returns from Sunday and on. Dry weather is expected for much of the long term period due partially to limited moisture availability but a few passing waves would make light precipitation possible at times. The far north could see some snow showers early Friday with the passage of a frontal system. The next best chance of precip will come at the end of the period with the potential for an approaching trough and surface low. && .AVIATION (00Z TAF Issuance)... Issued at 628 PM EST Tue Feb 3 2026 Impacts: - MVFR ceilings developing across all terminals tonight lasting through much of tomorrow Discussion: In the wake of the weak storm system that moved over the area in the last 12 hours, skies have briefly cleared for all but KBMG. However, prevailing N-NE flow will support redevelopment of clouds, specifically MVFR ceilings, into the terminals overnight. Some dry air may help to scatter out the clouds for a time tomorrow at KLAF and KIND, but overall persistence in the low clouds will be the rule. A few flurries may develop tomorrow afternoon with some minor instability and an approaching weak upper level storm system. However, duration of flurries should be too limited to warrant mention in the TAFs. Winds will be N-NE 5-10 kts through the period. && .IND WATCHES/WARNINGS/ADVISORIES... None. && $$ UPDATE...Crosbie SHORT TERM...Updike LONG TERM...KF AVIATION...Crosbie