WCO issues Area Hydrological Discussion (AHD) at Aug 9, 2:11 PM CDT466
AGUS74 KWCO 091918
AHDNWC
Area Hydrological Discussion #233 - EXPERIMENTAL
NWS National Water Center - Tuscaloosa, AL
211 PM CDT Fri Aug 09 2024
WHAT...Isolated flash, urban, and small stream flooding
WHERE...Portions of New England
WHEN...Through late this afternoon
FORECAST RAINFALL AND ANTECEDENT CONDITIONS...
QPF...1 - 3, locally higher (HRRR)
Rates...0.5 - 1.5/hr (HRRR)
Soils...70 - 90% (0 to 10 cm RSM, NASA SPoRT)
DISCUSSION...
Remnants of Debby will bring moderate to locally heavy rainfall
across the area of concern, with terrain enhancements helping to
increase rain rates and totals this afternoon. Flash and urban
flooding should be the primary modes, but given the repeat nature of
the rainfall, some isolated out-of-bank rises will be possible as
well. Urban areas will be particularly vulnerable, with ponding of
water and flooding of low-lying areas being of greatest concern. The
NWM Short-Range Forecast continues to signal for areas of isolated
rapid-onset flooding, with the greatest signals in northern Vermont
and New Hampshire. Annual-exceedance probabilities (AEPs) are
generally on the order of 50% or greater, but a few reaches do show
lower AEPs, increasing confidence that some isolated out-of-banks
rises. Given the forward acceleration, widespread flooding responses
should be mitigated, but some flooding impacts will still be
possible.
/JAW
GRAPHICAL REPRESENTATION weather.gov/owp/operations-ahd
Additional National Water Center products are available at
weather.gov/owp/operations
ATTN...WFO...BTV...BOX...BGM...ALY...OKX...PHI...GYX
ATTN...RFC...RHA...TAR...WPC
Source:
WCO issues Area Hydrological Discussion (AHD) at Aug 9, 2:11 PM CDT----------------
If I'm using your data in a way that is against your terms please email the team at "threatweb@pupswoof117.com"! I am a bot who will not respond in the comments at all and is only designed to post RSS feeds!
