Jump to content
  • Member Statistics

    17,606
    Total Members
    7,904
    Most Online
    ArlyDude
    Newest Member
    ArlyDude
    Joined

Feb. 19-24 Heavy rain and flooding threat


Indystorm

Recommended Posts

  • Replies 100
  • Created
  • Last Reply

You wouldn't know we were only a few days away from the beginning of a widespread significant precip, and potential flooding event by looking at the dewpoint plot tonight.  The deep moisture is pretty confined to the gulf coast areas.  That is gonna change quite significantly over the next few days.

eap4dv.jpg

Link to comment
Share on other sites

From the National Weather Service in Northern Indiana...

.LONG TERM...(Monday through Saturday)
Issued at 312 AM EST Sun Feb 18 2018

Rounds of rain are ahead this week which will cause hydrologic 
issues. Rainfall amounts of 3 to 5 inches are likely by the end of
the week as moisture continues to surge northeast. Several factors
continue to be very supportive for moderate to occasionally heavy
rain for an extended period. Precipitable water values will rise 
above 1.3 inches at times which would top the climatological 
values for this time of year. NAEFS/ensemble mean precip water 
forecast values exceed the 99.5% percentile/climate for close to 
48 hours from Monday afternoon into Wednesday, indicative of the 
potential for an extreme event. An analog from Feb 29 to March 5 
of 1976 produced 5.45 inches of rain at South Bend. WPC is 
supportive of of heavy rainfall with widespread amounts this 
upcoming week of 2.5 to 5 inches. After coordination with 
surrounding offices, have updated the Hydrologic Outlook that was 
initially issued yesterday morning to highlight flooding concerns 
from these rainfall amounts. Highs Tuesday may set records and 
have the potential to top the highest temperature so early in the
season.
 

Link to comment
Share on other sites

IND thinks rain will arrive in central IN after 4 a.m. Monday morning.  I don't know.  Impressive dews are still way south along the Gulf coast and will take some time to saturate the column once the moisture gets up this way.  May be delayed a little bit, but once that low center presently in eastern CO gets its act together the flow should return.  Supposed to be in the low 70's here on Tuesday.

Link to comment
Share on other sites

35 minutes ago, Indystorm said:

IND thinks rain will arrive in central IN after 4 a.m. Monday morning.  I don't know.  Impressive dews are still way south along the Gulf coast and will take some time to saturate the column once the moisture gets up this way.  May be delayed a little bit, but once that low center presently in eastern CO gets its act together the flow should return.  Supposed to be in the low 70's here on Tuesday.

I would look aloft, the initial surge is more than likely on the 850mb moisture/warm front.

Link to comment
Share on other sites

50 minutes ago, Chinook said:

Interesting note from DTX:

This should break the record PW for this time of year for DTX's location.

Nothing above 1.14" on record for the month of February, this isn't going to break the record, it is going to absolutely destroy it. You have to go to mid April to find a record that is above 1.4" for the year to date.

Link to comment
Share on other sites

Looks like the axis of heavy rain will set up north of where guidance had it the past few days, with much of the LOT CWA in line for 2-6" of rain.

Flood potential is high with the rainfall, snow melt and frozen ground. Already seeing areas of standing water with just minor rain and snow melt combo.

Link to comment
Share on other sites

1.34” here since last night. Not sure why no flood warnings hoisted here, next wave of precipitation should arrive over night. Euro is more aggressive than GFS regarding the temperature change tomorrroe night, and wants to bring moderate freezing rain to the area. Definitely something to monitor. 

 

Multiple records in jeapordy. Some upper 70s to low 80s in the south. Sheesh.

Link to comment
Share on other sites

For Indiana rivers

 

Flood Warning

Flood Statement
National Weather Service Indianapolis IN
617 PM EST Mon Feb 19 2018

...A Flood Warning continues for portions of the following rivers in
Indiana...

  Driftwood River...East Fork White River...Eel River...Mississinewa
  River...Muscatatuck River...Tippecanoe River...Wabash River...White
  River...Wildcat Creek...


.Multiple rounds of rainfall are expected this week across central
Indiana. The rain will likely be heavy at times with embedded
thunderstorms. Rainfall totals of 3 to 5 inches with some locally
higher amounts appear possible at this time.

River flooding will likely develop by mid to late week. Extensive
flooding will develop along portions of the Wabash River starting
Wednesday morning in the Lafayette area to early next week south of
Hutsonville and Riverton in western Indiana. Extensive flooding along
the Tippecanoe River near Delphi is forecast to develop early
Thursday morning. Flooding will affect numerous local and state
roads, considerable agricultural land, and possibly some residential
areas.

Those with interests along area rivers and streams should closely
monitor forecasts and conditions in the coming days and be prepared
to take action to protect life and property.
Link to comment
Share on other sites

Northern IN rivers and some Chicago area rivers are affected as well.  It seems that the heaviest axis of rain per models might be through the Chi town area and just south thru Wed. SE MI and NW OH continue to be under threat as well as flood watches and river warnings are hoisted.   Extensive geographical coverage and certainly high PWAT values for this time of year.  Heavier cells now developing  at 7 p.m. CST this Mon. evening in west central IL and moving ne to Chicago metro.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...