Issue Date: Friday, September 24th, 2021
Issue Time: 9:50AM MDT

— Flooding is NOT expected today

Subsidence and building high pressure should bring another day of mild weather to the state. Marked in the water vapor imagery below (blue) is the cold front that started to move through during the early morning hours. Not much moisture return behind the front, and with PW remaining under 0.50 inches and an increase in dry, northwesterly flow aloft, only cloud cover is forecast over the northern tier of the state. There should be plenty of sunshine elsewhere, so another beautiful day ahead. Surface winds are expected to turn easterly over the eastern portion of the state throughout the day, so slightly cooler temperatures on the magnitude of ~5 degF are forecast. High temperatures are forecast to be around the same as yesterday over western Colorado, so still above average. Without any rainfall anticipated, there is NO flood threat issued.

Today’s Flood Threat Map

For more information on today’s flood threat, see the map below. If there is a threat, hover over the threat areas for more details, and click on burn areas to learn more about them. For Zone-Specific forecasts, scroll below the threat map.

Zone-Specific Forecasts:

Southeast Mountains, Front Range, Urban Corridor, Northeast Plains, Southeast Plains, Raton Ridge & Palmer Ridge:

High should reach the into the upper 70Fs and 80Fs today over the lower elevations with upper 60Fs and low 70Fs for the mountain towns. Outside of some cloud cover over the northwest corner of the state and Front Range this evening, it should be clear day. Flooding is NOT expected.

Central Mountains, Northern Mountains, San Juan Mountains, Grand Valley, Northwest Slope, San Luis Valley, & Southwest Slope:

The shortwave from yesterday has already moved into southern Utah this morning. So, there will be a mix of northwesterly and more easterly flow aloft today. With PW remaining around 0.40 inches, rainfall is not anticipated, so there is NO flood threat issued. A few high clouds may be possible over the San Juan Mountains late this afternoon/evening with some upper level moisture. High temperatures should reach into the 80Fs for the valley locations and low 70Fs for the mountain towns.

Issue Date: Thursday, September 23rd, 2021
Issue Time: 9:15AM MDT

— Flooding is NOT expected today

As shown in the visible satellite image, below, a pronounced disturbance is currently moving into the Central Rockies from the northwest. Although it will produce mainly an increase in clouds for Colorado today, it is expected to cut off from the main steering flow by tomorrow. In turn, depending on what exactly transpires with it over the next 3-7 days, it could lead to some more interesting weather for us in the days ahead (see this afternoon’s Outlook for more info).

For today, expect slightly above normal afternoon temperatures along with partly to mostly cloudy skies by afternoon. Isolated, higher-elevation rain and snow showers are possible this evening and into the early overnight hours as some mid-level moisture gets pushed upslope over our Rockies. But very little precipitation accumulation is expected. Thus, there is NO flood threat today.

Today’s Flood Threat Map

For more information on today’s flood threat, see the map below. If there is a threat, hover over the threat areas for more details, and click on burn areas to learn more about them. For Zone-Specific forecasts, scroll below the threat map.

Zone-Specific Forecasts:

Front Range, Northern Mountains, Central Mountains, San Juan Mountains and Southeast Mountains:

Becoming mostly cloudy and seasonably warm with temperatures a few degrees above normal. Isolated rain and snow showers are possible over the higher terrain, mainly above 9,000 feet later this evening and into the early overnight hours. A lucky location could get 0.1 inch of accumulation. Flooding is NOT expected today.

Urban Corridor, Northeast Plains, Southeast Plains, Palmer Ridge and Raton Ridge:

Becoming partly cloudy and warm with high temperatures of 5-10F above normal expected. Breezy conditions are expected for the Northeast Plains later this afternoon as a dry cool front moves southward. However, precipitation and flooding are NOT expected today.

Northwest Slope, Grand Valley, Southwest Slope and San Luis Valley:

Becoming partly cloudy and seasonably warm today with temperatures a few degrees above normal. Flooding is NOT expected today.

Issue Date: Wednesday, September 22nd, 2021
Issue Time: 9:15AM MDT

— Flooding is NOT expected today

It’s officially the first day of Fall, but the above average temperatures and calm weather that are forecast will make you think that it is still summer. High pressure will dominate the flow over the state, which will help produce these mild conditions as the ridge axis is pushed overhead. The water vapor imagery below shows the dry air mass is still in place, and PW at Grand Junction and Denver was measured at 0.29 inches and 0.27 inches, respectively. That should keep the rainfall chances right around zero today, and dry upper levels should also limit the chances for afternoon cloud cover to develop. This evening, lift and a little moisture from next incoming trough is expected to produce some high cloud cover over the northwest corner of the state. While this is not expected to produce any precipitation, it may help keep overnight and early morning temperatures a little warmer than the last couple of nights. As expected, flooding is NOT forecast today.

Today’s Flood Threat Map

For more information on today’s flood threat, see the map below. If there is a threat, hover over the threat areas for more details, and click on burn areas to learn more about them. For Zone-Specific forecasts, scroll below the threat map.

Zone-Specific Forecasts:

Central Mountains, Northern Mountains, San Juan Mountains, Grand Valley, Northwest Slope, San Luis Valley, & Southwest Slope:

Today’s high temperatures should reach the upper 70Fs to low 80Fs across the lower elevations and into the 70Fs for the mountain valleys. There may be some patchy breeziness over the Northwest Slope and Central Mountains this afternoon, but critical fire weather is not anticipated. Rainfall is also not forecast today, so flooding is NOT expected. Tonight, some high clouds may develop over the northwest corner of the state, which would potentially help keep overnight lows a little warmer. Overnight lows may reach below freezing for the SLV again, so stay tuned into NWS Pueblo for any Freeze Warnings that may be issued.

Southeast Mountains, Front Range, Urban Corridor, Northeast Plains, Southeast Plains, Raton Ridge & Palmer Ridge:

It definitely won’t feel like the first day of Fall with the warm temperatures and abundant sunshine that are forecast. Afternoon high temperatures should rebound into the 80Fs across the lower elevations with upper 70Fs forecast along the southern I-25 Corridor. Mountain valley high temperatures are forecast in the 70Fs. It may be a little breezy over the Front Range this afternoon with northwest surface winds in the 15-20 mph range. Rainfall is not forecast today, so flooding is NOT expected.

Issue Date: Tuesday, September 21st, 2021
Issue Time: 9AM MDT

— Flooding is NOT expected today

It’s another crisp morning with some light showers over the far Southeast Plains to start the day. Observations also indicate some snow and fog over the Southeast Mountains. Expect gradual clearing of both areas of precipitation throughout the morning. High pressure will continue to build over the state today, and dry, northwest flow aloft will fill in across the state. PW at Grand Junction has already dropped to 0.26 inches, and this dry air can be seen in Denver’s sounding above ~650 mb. This should mix out any remaining surface moisture and help produce clear skies this afternoon over much of the state. Between the dry air overhead and subsidence behind the departing trough, rainfall/flooding is not anticipated. Enjoy another day of cooler temperatures because above average temperatures return to the forecast tomorrow.

Today’s Flood Threat Map

For more information on today’s flood threat, see the map below. If there is a threat, hover over the threat areas for more details, and click on burn areas to learn more about them. For Zone-Specific forecasts, scroll below the threat map.

Zone-Specific Forecasts:

Northwest Slope, Northern Mountains, Grand Valley, San Juan Mountains, San Luis Valley, Central Mountains & Southwest Slope:

Clear start to the day with the dry air overhead. Late afternoon high temperatures should reach the mid-70Fs across the valley locations with 60Fs for the mountain valleys. Rainfall and cloud cover is not forecast today, so flooding is NOT expected. Cold overnight temperatures are expected once again over northwest Colorado and the SLV. Stay tuned to your local NWS office for any potential Freeze Watches/Warnings that may be issued, although currently, it is looking like it will be a little bit warmer than last night. 

Southeast Mountains, Front Range, Northeast Plains, Southeast Plains, Urban Corridor, Raton Ridge & Palmer Ridge:

Another day with warm sunshine and a cool breeze; the perfect Colorado day. Highs will reach into the high 60Fs and low 70Fs over the lower elevations with mid-50Fs for the mountain valleys. Current showers should begin to dissipate with a little daytime heating and drying. Outside of some high clouds (southwest), it should be a clear day ahead. Rainfall/flooding is NOT expected.