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NDCMP Weather Forecast

District 1District 2
Transition (UTC)415015
FirstSecondThirdFirstSecondThird
Forecasted WeatherNO SIGRAINNO SIGRAINRAINNO SIG

Forecaster: Lynnlee Rosolino

Synopsis


Western North Dakota is still sitting under an upper level ridge, however the surface high pressure system has moved East and a line of surface low pressure systems are now migrating into both districts. This could bring some rain to both districts, especially in the morning when dewpoints are expected to be high. Some CAPE is also expected to move into both districts in the morning which could aid in convective development, however the values are pretty low, so without a major forcing significant weather is not expected. Both districts are in a slight PVA region of a jet streak, which could allow for some rising motion, enhancing chances for convection, however the timing of this region doen't align with the timing of CAPE values moving in. Some vorticity and a shortwave are also expected to move through both districts in the early morning hours, slightly before the arrival of dewpoints and CAPE. Storms could develop if all three of these conditions occur at the same time, but this is not looking incredibly likely. Overall, rain is expected today, but convection is not as likely.

8/3/21


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

The upper level ridge over North Dakota still persists, and a jet streak nearby is leaving us in a slight PVA region

Two surface low pressure systems are moving towards Western North Dakota

Dewpoints are expected to be highest tomorrow morning

Some CAPE is expected to move in in the morning

Vorticity in the morning could aid in convective development


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 34.4 47.5 107 0 0 0 24
ISN 4.2 26.9 41.8 82 0 0 0 66
MOT 2.3 33.7 45.2 126 0 0 0 43

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 29 14.3 33.3 42.1 1 0
ISN 25 10.5 22.7 34.3 4.4 0
MOT 29 14.7 31.4 41.7 2.2 0

Weather Features

  • Jet Stream (PVA) RRQ or LFQ
  • Short Wave Trough
  • Surface Low
  • Upper Level Ridge