Friday, September 30, 2011 MIA

The extra-tropical cyclone that has been dominating the weather for the last week is coming to the end of its life cycle.  An arm of this system passed over the South and Miami earlier in the week.  For tomorrow this means that things will clear up.  Scattered clouds, with highs in the high 80's.  Overnight the dewpoint will keep the temperature from falling below the high to mid 70's.  Afternoon convective thunderstorms are a possibility but unlikely for Friday.

KMIA forecast for Thursday, 9/28/2011

High temperatures in Miami on Thursday will hover in the upper 80's with partly cloudy conditions. Relative humidity numbers remain in the 60-70% range, increasing the heat index to the mid 90's. There will be a slight chance of showers throughout the day. Low temperatures will be in the upper 70's and north east to easterly winds around 8 knots are expected.

Outlook for KMIA, September 26-30

A trough associated with a slow moving, closed-off  low pressure system currently over the Ohio area is situated along the western Florida coast this morning,  allowing for a continued stream of moisture to be advected into the area. PW values are around 2.50"- 2.75".  The main threat for today is the chance of heavy rain, as there are very weak winds aloft, resulting in slow moving storms.  Highs today around 90 and tonight's low in the upper 70's with light southerly winds.

For Tuesday, the pattern appears to remain unchanged for the most part, as the closed low is slow to move eastward, but the moisture axis associated with the trough should move enough eastward to allow for the reduction in storm coverage.  Again, heavy rain will be the main threat from any storms that manage to form.  High temperatures around 90, low temperature in the upper 70's with light southerly winds.

Wednesday - Friday:  The t-storm coverage should decrease as the closed low system begins to elongate while slowly working its way eastward.  Overall, the pattern will remain the same, as little change is noted through the end of the week...  Highs around 90, lows in the upper 70's with light S-SE winds.

Forecast for Tuesday September 27th

High temperature should top out around 90 degrees with a low temperature in the low 70's. However, with dewpoints in the upper 60's to low 70's the heat index temperature for the daytime will be in the upper 90's. Expect partly cloudy to overcast skies with a small chance for storms throughout the day. Winds should be very light from the northwest, switching to the southwest later in the afternoon.

Forecast for KDEN for Friday

The weather for Friday will be influenced by the high pressure over Colorado. Friday should be even warmer than Thursday. Forecast for Friday has temperatures in the high 70s to low 80s, sunny skies, light winds, and no precipitation.

Forecast for Thursday September 22 2011, KDEN

Dominating the weather for today and tomorrow is the extra tropical cyclone currently over Michigan.  For us locally this means we will be under high pressure conditions.  This will mean that we will have clear skies with temperatures just outside climatological normals, no rain, and moderate winds.

High:  79 F
Low:  41 F
Wind:  12kts
Precip:  0.0in

Wednesday, September 21, 2011

A surface trough disturbance will persist through Wednesday bringing cooler temperatures in the mid to upper 60's. Lows will be cooler as well, dipping into the mid 40's. Winds will be between 5-10 knots shifting from southeasterly to north/northeasterly flow in the afternoon or early evening. There is a slight chance of precipitation, but not significant amounts of precipitation are expected.