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.

Weekly outlook

For the rest of the week -- After a mild day today, expect temperatures to cool into the mid to upper 60's on Tuesday and Wednesday as a ridge builds behind a cold front associated with an upper level trough that will move through our area Tuesday morning. Not much moisture is accompanying this trough, so don't expect any precipitation. Just an increase in cloudiness. For Thursday through the weekend high temperatures will progressively warm into the upper 70's, with some low 80's possible. Low's the rest of the week will range in the mid to upper 40's.

Tuesday, 20 September 2011 KDEN

In Denver tomorrow, the high will only hit high 60s due to a party cloudy afternoon, though there is very little chance for rain in the Denver Metro area. The low temperature will be in the lower 50s. There will be a steady breeze from the east.

Friday, September 16, 2011 (KDEN)

Friday, September 16, 2011 (KDEN)

The beginning of the period will see the Denver Cyclone from today (Thursday) lingering for a few hours before the south-westerly winds kick in for the first part of the day on Friday. This will keep temperatures cool for the overnight, with low temperatures for Friday being in the upper 40's. Light SE winds shifting SW around sunrise.

Friday will see a warm up in temperatures thanks to this south-westerly flow, but PW values remain around 0.6-0.8 for the day per the GFS model. An upper trough will also make its way through the area midday. With the warmer conditions and this remnant moisture, combined with the energy associated with this upper trough passage, we have a decent chance for some late day thundershowers, especially over the Palmer Divide... POP around 20%. Friday's max temps in the mid 70's with light SW winds, shifting SE in the late afternoon.

Forecast for Sept 15, 2011 [KDEN]

For Thursday, expect temperatures in the mid 50s to lower 60s. A cold front paired with an upper level trough brings cooler temperatures into the area on Wednesday which will continue into Thursday. The highest chances of precipitation are in the mountains, but wind gusts could be around 15 kts.

Wednesday, September 14 KDEN

Overcast skys on Tuesday night will persist into Wednesday keeping the high temperature around 54. Frontal influence from the East will provide rains through the day. Accumulating about .26 inches. Overnight the low will remain around 47 and winds associated with the front will be around 12 knots with gusts up to 20 knots.

Outlook

Looking forward, the temperature will decrease from the 80's to the 60's. Friday will return to the 70's. Low temperatures will remain in the high 40's to low 50's. Cloud cover will increase until Wednesday night with decreasing cloud cover through Friday. Increasing chances for rain starting tonight until Thursday night with snow accumulation in the higher mountain ranges.

KDEN forecast for Tuesday, September 13, 2011

A weak cold front is expected to cross the state as a surface trough deepens, bringing cooler temperatures Tuesday, mid-seventies, with light winds and a chance of showers throughout the day. Light winds will be present Tuesday evening as the cold front continues to pass through with a weak temperature gradient, low temperatures will remain around 52F.

Forecast for Friday Sept. 2

For Friday, look for high's to be in the low to mid 70's and low's in the lower 50's. A high pressure ridge is going to build over southwestern Colorado, which should keep us in a dry pattern for the next several days. As such, expect skies to be mostly clear to partly cloudy with generally calm winds of between 5 and 10 knots. During most of the day on Friday, these winds should be north to northeasterly.

KDEN Forecast for Thursday, September 08, 2011

A slow moving upper trough continues to move its way across the state while weakening at the same time, lending way to drier conditions for Thursday.  GFS models show PW values decreasing from 1.0 at the time of this post to 0.2 as of 18Z Thursday. Overall, the synoptic pattern will remain rather unchanged courtesy of a blocking pattern in place over the eastern U.S., and we will continue to see below normal temperatures for the period.

For Wednesday night, we will see the shower activity decreasing and skies clearing with lows around 50.  For Thursday: Mostly sunny skies with highs around 72-75 and light winds around 5-7 kts.  For Thursday night: Mostly clear and cooler, with lows around 47-50 and light winds around 5 kts.

Forecast for KDEN (Weds, Sept 7, 2011)

Denver has a surface low to the SE. A trough is moving into the Denver-Metro area which brings in instability that is enhanced by the mountains which brings possibilities for showers and isolated weak thunderstorms. Weds should be in the mid-70s with a light wind.

Weekly Outlook 9/5-9/10

Denver will remain under a consistent ridge of upper-level high pressure throughout the week, with a shortwave disturbance moving in on Wednesday. This disturbance will increase the likelihood of thunderstorms on Wednesday, with temperatures in the lower 70's. As this disturbance moves out, temperatures are expected to return to the upper 70's Thursday with a slight chance of thunderstorms remaining throughout the week.

2 SEPT 2011

Expect some clouds throughout the day bringing the high temperature to around 83°F. Low temperature will be around 60°F. Pressure will remain high with winds coming from the north and changing to a southeasterly wind. There is a slight chance for precipitation with trace amounts to the south of Denver where a weak cold front will organize after noon.