Area Forecast Discussion
Issued by NWS Goodland, KS
Issued by NWS Goodland, KS
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071 FXUS63 KGLD 221956 AFDGLD Area Forecast Discussion National Weather Service Goodland KS 156 PM MDT Sat Jun 22 2024 .KEY MESSAGES... - Sunday through Tuesday will be hot! Highs in the upper 90s up to 105 are forecast. Heat indices will be fairly similar to air temperatures during this time. - Chances for storms each day. && .SHORT TERM /THROUGH MONDAY NIGHT/... Issued at 152 PM MDT Sat Jun 22 2024 We currently have a 250mb high pressure system over Texas and a low pressure system in central Canada. These two features have created generally zonal flow through the Great Plains, which looks to remain over the next few days. In the lower levels, we can expect the flow to become southerly this evening. This air is expected to have a little moisture content that will slowly lower dewpoints through the period. These feature will contribute to low PoPs. This afternoon and evening, far northwestern Yuma county may see a few sprinkles as decaying showers from northern Colorado may (~20% confidence) reach the CWA before falling completely apart. Overnight tonight, we will remain mostly clear and winds will be fairly light from the south-southwest. A few CAMs were showing some fog moving into the eastern CWA tonight, but due to the SSW flow, confidence for fog formation is less than 10%. Tomorrow, we will see the southerly winds pick up to around 15 kts and gusts up to 25 kts from the SSW. This will help a dryline form fairly early in the day. Also, at 500mb, a weak shortwave looks to start impacting the CWA around 18-21Z. These two features may set off some scattered storms in the early afternoon. Best time for convection will be between 20-01Z. A similar setup looks to occur on Monday afternoon, too. Temperatures tomorrow and Monday are of concern as temperatures will warm to over 100 for most of the CWA. Monday will be the hotter day, but heat indices east of highway 25 look to be over 100 both days, with some westward expansion on Monday. Be prepared for a very hot stretch of weather! Overnight temperatures will drop into the mid 60s to low 70s Sunday and Monday night. There are some elevated fire weather concerns for Monday afternoon in the western CWA. RH values lower into the upper teens and winds look to gust up around 15 kts. No where near critical fire weather conditions, but it is worth keeping an eye on any fires. && .LONG TERM /TUESDAY THROUGH SATURDAY/... Issued at 113 PM MDT Sat Jun 22 2024 For the long term period, relatively hot conditions are forecast to continue with increased chances for storms going into the end of the work week and the weekend. For Tuesday and Wednesday, hot temperatures in the mid 90`s to mid 100`s remain forecast with an upper level ridge axis forecast to move through the area. While the current forecast has Wednesday a bit cooler than Tuesday, this may change as ensemble guidance suggests that the ridge may amplify a bit more which would help pull in warmer temperatures into the area. An upper trough may slide through the Northern Plains and help keep low pressure near the area which would help provide some lift for storms and potentially swing winds to out of the southeast. Storm chances either day are currently forecast to be fairly limited and would likely form over the higher terrain in Colorado and push east, especially with enough moisture return. For Thursday through Saturday, an upper trough over the Northwestern CONUS is forecast to begin making its way across the Northern Rockies and Plains. This is forecast to deamplify the ridging over the area to more zonal flow, with southwesterly flow possible if the trough amplifies enough. This is forecast to cool the area slightly into the 90`s and low 100`s depending on how quickly the next trough moves near. If it delays more towards the beginning of the weekend, Thursday would likely be in the 100`s with lesser chances for storms. Skies would generally be clear except for any PM storms and lingering cloud cover the next morning. For storms through the time period, severe weather would be possible, but chances are currently forecast to be low each day. The overall weak flow should keep effective shear below 30 kts and CAPE is generally forecast to be below 2000 J/KG. Would likely be more pulse severe storms except for the end of the week whenever the surface low pressure and cold front move through. && .AVIATION /18Z TAFS THROUGH 18Z SUNDAY/... Issued at 1125 AM MDT Sat Jun 22 2024 VFR conditions are expected to prevail through the period. Winds will become northeasterly this afternoon and evening, and weaken. By sunrise, winds will be southerly and be picking back up speed. Some models are suggesting light fog near KMCK around 12Z, but confidence is less than 5% flight conditions will be impacted. && .CLIMATE... Issued at 302 AM MDT Sat Jun 22 2024 With hot conditions expected over the area Sunday and especially into Monday, with highs at least 100F area-wide, there could be some locales coming within a few degrees of at least tying the daily record(s). The records for Sunday, June 23rd and Monday, June 24th listed below are for comparison to the expected forecast each day. Despite the region seeing triple digit heat, most locales are still below records. Sunday, 6/23 Monday, 6/24 Goodland KS 106F in 2012+ 109F in 2012 Burlington CO 106F in 1954 107F in 1954 Hill City KS 111F in 2012 114F in 2012 McCook NE 106F in 2012+ 107F in 1943 Colby KS 105F in 1943 107F in 2012 Tribune KS 105F in 1954 109F in 2012 Yuma CO 107F in 1954 103F in 2002 A (+) denotes a multiple year record && .GLD WATCHES/WARNINGS/ADVISORIES... KS...None. CO...None. NE...None. && $$ SHORT TERM...CA LONG TERM...KAK AVIATION...CA CLIMATE...JN