NDCMP Weather Forecast

District 1District 2
Transition (UTC)22305
FirstSecondThirdFirstSecondThird
Forecasted WeatherRAINHAILTSRANO SIGNO SIGTSRA

Forecaster: Ajay Kanteti

Synopsis


Upper level dynamics will likely be the greatest determining factor of today's weather, primarily across District 1. Temperatures will stay relatively moderate in the low 80's to mid 70's at the peak of the day across both districts as low level dynamics remain W of district until late evening into early morning. However, an area of low pressure in N MT will deepen throughout the day & move to the SE, dragging with it a surface trough & strengthening warm front. This surface trough will provide some lift in the vicinity of E MT during mid afternoon in conjuntion with a deepening mid to upper level disturbance caused by a churning upper level trough over W Canada & the Pacific NW. Ample air mass recovery via breaks in cloud cover in the early afternoon will allow decent MLCAPE to filter into the area & provide a relatively unstable atmosphere, especially in the vicinity of SE MT. Any storms that form would likely become messy fairly quickly with hodographs favoring a linear storm mode. Mid level lapse rates remain relatively unimpressive in the vicinity of District 1 during this time but a modest dry slot in the mid levels should allow for a conditional hail threat based on the strength of dynamic lift in the area from late afternoon into early evening. After this upper level disturbance passes, the approaching aformentioned warm front anchored in E MT should provide ample lift for weak thunderstorms & stratiform showers to stick around in the vicinity of District 1 & spread up to District 2 throughout the morning until briefing tomorrow.

D1... Showers will continue to filter into the area throughout mid afternoon. A conditional chance for small hail will likely accompany any thunderstorms that manage to form in the late afternoon into early evening. From late evening until briefing tomorrow, stratiform showers with some rumbles of thunder are likely to filter into the area.

D2... Mostly cloudy skies will stick around throughout the afternoon with a nice cumulus field building in & temperatures topping off in the low 80's. From late evening until briefing tomorrow, stratiform showers with some rumbles of thunder are likely to filter into the area.

8/25/22


Flash Flood Guidance (Click Image for 1hr, 3hr, & 6hr Graphics)

Surface Dewpoints 21z

Surface Temperatures 21z

MLCAPE & MLCIN 0z

250 mb 0z

500 mb 0z

700 mb Absolute Vorticity 0z

Mid Level Lapse Rates 0z

Surface trough 0z

WPC surface analysis 0z

HRRR sounding for D1 0z


Indices


Lifted Index
(<1)
K index
(>30)
Total Totals
(>48)
Sweat
(>200)
Cape
(>125)
CIN
(>-100)
Bulk Richarson Number
(>3)
Helicity
(>125)
D1 1.1 33.7 44.8 197 86 -98 1 20
ISN 3.9 15.9 41.8 111 0 0 0 1
MOT 4.3 10.3 41.1 123 0 0 0 3

Jefferson Index
(>28.5)
Cross Totals
(>18.65)
Thompson Index
(>28.5)
S Index
(>35.8)
Showalter Index
(<=0.5)
Cap Strength
(0-2.65°C)
D1 31 22 32.6 39.6 0.1 2.4
ISN 20 16.7 12 24.6 3.9 0
MOT 18 18.3 6 16.9 3.9 0

Weather Features

  • Cyclonic Vorticity Advection
  • Dry Line/Slot
  • Short Wave Trough
  • Stationary Front
  • Upper Level Ridge
  • Upper Level Trough