![National Oceanic and Atmospheric Administration](/build/images/header/noaa.d87e0251.png)
![National Weather Service](/build/images/header/nws.4e6585d8.png)
![United States Department of Commerce](/build/images/header/doc.b38ba91a.png)
Area Forecast Discussion
Issued by NWS Paducah, KY
Issued by NWS Paducah, KY
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
271 FXUS63 KPAH 080720 AFDPAH Area Forecast Discussion National Weather Service Paducah KY 220 AM CDT Mon Jul 8 2024 .KEY MESSAGES... - The remnants of Beryl will impact the region beginning late Monday through Wednesday night. Tropical rains will be heavy at times, especially across southeast Missouri and southern Illinois. This could lead to some flooding issues developing. - A few severe storms will be possible as well late Monday and again Tuesday afternoon. Damaging winds and a few tornadoes will be the primary hazards. - Drying out and warming up back to typical mid-summer heat and humidity for the end of the work week into next weekend. && .DISCUSSION... Issued at 220 AM CDT Mon Jul 8 2024 Our two main weathermakers for the next few days are in clear view this morning. A longwave upper trough to our northwest stretching from south central Canada to northwestern Mexico and Hurricane Beryl making its approach on the Texas Coastal Bend. Mid 70s dewpoints over Arkansas also mark the end of our relative humidity respite of the last few days. Dewpoints today should work into the mid 70s by midday as overall column moisture increases amid southerly sfc-300mb flow pulling from the mid south and the richer moisture around the core of Beryl. By this afternoon sufficient instability should have built in, coupled with weak upper level ascent for showers and storms, particularly over southeast Missouri. By this evening closer proximity of the upper trough, the leading upper jet and the remnants of Beryl significantly increase large scale ascent over the region as the richer tropical moisture moves into the region. A cold front to the northwest of the storm track looks to also serve as a focusing mechanism for initial showers that become more widespread through the night. With PWAT values 2.2 to 2.4 inches even fairly weak showers will be very efficient and most guidance keeps some degree of precip over our southeast Missouri counties in rainfall from 06z Tuesday through the completion of the storms passage. Poor mid-level lapse rates limit instability, but if sufficient surface based CAPE can form over the southeastern part of the CWA there will be a risk for tornadoes/damaging wind on Tuesday given the favorable kinematics. Overall, meager convective instability may limit the highest level precip values but the combo of strong jet ascent, frontogenetic forcing and the column moisture of a decaying tropical cyclone has the potential to produce higher- end flood threat if everything comes together. In collaboration with surrounding offices will be issuing a flood watch for about the western 2/3rds of the CWA. Have a fair amount of uncertainty about the eastern row or two of counties but it serves as a reasonable buffer to the highest QPF forecast and most likely area to see persistent heavy rain. The better chance of deep convection and heavier instantaneous rates supports the idea of including them with this issuance. After Beryl moves through our conditions should dry out and become a bit more pleasant. We will be at or slightly above seasonal norms but may catch another reprieve from the higher end humidity, for at least a few days before it oozes back into the area by the upcoming weekend. && .AVIATION /06Z TAFS THROUGH 06Z TUESDAY/... Issued at 1114 PM CDT Sun Jul 7 2024 The TAFs remain VFR through tonight as high cirrus clouds thicken through Monday morning. There is a possibility of some patchy ground fog ahead of the cirrus, which may bring brief MVFR visibilities. Included a Tempo for that. Scattered CU around 5 kft AGL are also possible during the day as a disturbance begins to approach the region. Included PROB30s for TSRA at all terminals beginning first in the western sites then shifting eastward. Winds will be fairly light through this issuance, generally less than 10kts. && .PAH WATCHES/WARNINGS/ADVISORIES... IL...Flood Watch from late tonight through Wednesday morning for ILZ075>078-080>094. MO...Flood Watch from late tonight through Wednesday morning for MOZ076-086-087-100-107>112-114. IN...Flood Watch from late tonight through Wednesday morning for INZ081-085-086. KY...Flood Watch from late tonight through Wednesday morning for KYZ001>008-010-014-018. && $$ DISCUSSION...JGG AVIATION...KC