Flood Watch for most of Indiana

A Flood Watch is in effect for Monroe County and much of central Indiana. Look for high temperatures near 60 degrees on Thursday and then ice Thursday night with a low temperature of 19 degrees. Don't you just love Indiana weather? Temperatures go back to 60 by Monday. 


Flood Watch

Flood Watch
National Weather Service Indianapolis IN
1130 AM EST Tue Feb 15 2022

INZ021-028>031-035>049-051>057-060>065-067>072-160030-
/O.CON.KIND.FA.A.0001.220217T0000Z-220218T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone-
Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam-
Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-
Rush-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Brazil, Nashville, Winchester, Bedford,
Fishers, Delphi, Zionsville, Greensburg, Union City, Linton,
Bloomfield, Covington, Farmland, Terre Haute, Danville, Shelburn,
Muncie, Fairview Park, Bloomington, West Lebanon, Indianapolis,
Frankfort, Seymour, Vincennes, Gosport, Loogootee, Jasonville,
Martinsville, Williamsport, Columbus, Carmel, Greenwood, New Castle,
West Lafayette, Flora, Tipton, Anderson, Montezuma, Rockville,
Mooresville, Farmersburg, Rosedale, Lafayette, Veedersburg, North
Vernon, Mitchell, Spencer, Noblesville, Parker City, Attica,
Rushville, Clinton, Greenfield, Washington, Sullivan, Worthington,
Lebanon, Kokomo, Plainfield, Brownsburg, Crawfordsville, Shoals,
Carlisle, Shelbyville, Greencastle, and Franklin
1130 AM EST Tue Feb 15 2022

...FLOOD WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY EVENING...

* WHAT...Flooding caused by excessive rainfall continues to be
  possible.

* WHERE...All of Central Indiana

* WHEN...From Wednesday evening through Thursday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.
  Creeks and streams may rise out of their banks. Low-water
  crossings may be flooded.

* ADDITIONAL DETAILS...
  - Moderate to Heavy Rain will be possible on Wednesday Night
    and Thursday. Rainfall amounts of 2 inches or greater are
    possible. This could result in Flooding.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

.Long Term...(Wednesday night through Monday)
Issued at 259 AM EST Tue Feb 15 2022

- Moderate to heavy rainfall possible on Thursday possibly resulting
in Flooding.

Wednesday...Models show SW flow in place aloft with a deep upper low
over the American Southwest. Strong southerly flow is in place at
the surface due to high pressure in place across the east coast.
This will allow for a warm and moist flow of air into the Ohio
Valley from the Gulf. Little in the way of upper support will in
play on Wednesday...but the warm moist air will make for a pleasant
day with above normal temps. However...the moisture arrival will set
the stage for our rain event.

Wednesday Night through Thursday night...High confidence for a rain
event is in place during this period. The previously mentioned upper
low over the SW states is expected to push out to the Central Plains
while an associated upper trough over the upper midwest begins to
deepen and push toward the Ohio valley on Thursday afternoon. A
strong surface low pressure system is expected to accompany this
system...pushing northeast from MO along a warm front that is
expected to be in place across Central Illinois and Northern
Indiana. For now...it appears the IND forecast area should remain
within the warm sector as this system approaches...allowing for p-
type to remain rain. Forecast soundings shows the column becoming
saturated by on Wednesday Night into Thursday with pwats approaching
1 inch. Furthermore the GFS 295K Isentropic surface shows good up
glide with specific humidities approaching 7 g/kg. Yet another
favorable ingredient that will be in place will be a strong LLJ up
to 65 knts across the Ohio valley on Wednesday Night through
Thursday. Forecast soundings on continue to shows strong flow aloft
through the day on Thursday along with a saturated column and pwats
climbing to near 1.30 inches by afternoon...which is quite high for
this time of year. Thus will continue with near 100 pops on Wed
night through Thursday and mention of heavy rain. Given the possible
rain amounts...areal flooding leading to river flooding will be a
concern.

The strong upper forcing will exit the area on Thursday night as the
surface low pushes to the northeast and the associated cold front
is dragged southeast across  Central Indiana. Best moisture will be
lost...however some wrap around precip on the cold side of the
system will remain possible. Thus will hold onto some smaller pops
in the evening with p-type as snow as forecast soundings show the
column falling below freezing and remaining saturated within the
lower levels. By 12Z Fri...a dry column is present as the previous
system will be well to the east and cold air advection will be in
play as ridging aloft and high pressure builds in at the surface.

Dry and seasonable weather is expected for the weekend as NW flow
remain in place aloft and surface high pressure slowly moves across
the region. The next best chance for precipitation will be Monday
and Tuesday as the upper flow once again changes to zonal and then
southwesterly...allowing some upper short waves to pass within the
flow. Will keep minimal pops at that time until after the main
system passes.

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