Issue Date: Friday, June 4th, 2021
Issue Time: 8:30AM MDT
— Flooding is NOT expected today
No real changes in the atmospheric setup from yesterday, and a nearly cloud free start to our Friday. The High continues to strengthen to our southwest, which will again help to produce hot temperatures and mostly dry conditions across the state. Expect pulse-like storms to develop over the same areas as yesterday (southern high terrains) with residual, mid-level moisture, but perhaps with a little less coverage. Best chance for measurable rainfall will be south, along and near the Continental Divide. Decent storm motion to the NNW should also help limit accumulations and keep precipitation mainly confined the mountains. The main threat from storms this afternoon and evening will again be strong outflow winds as indicated by the higher DCAPE values from soundings this morning. DCAPE is a measurement of the sinking motion of an air parcel in a downdraft. So very strong, but brief outflow gusts will be possible with the stronger storms that develop this afternoon. Flooding is NOT forecast.
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, Southeast Mountains, San Juan Mountains, Front Range & San Luis Valley:
Scattered storms will develop again over the mountains this afternoon with best accumulation forecast along and near the Continental Divide. Isolated, brief max 1-hour rain rates up to 0.50 inches (southwest) and 0.20 inches (southeast) will be possible. A couple storms could spill into the San Luis Valley again, but more wind than rainfall is forecast. Further north (southern Front Range/Central Mountains), totals just under 0.10 inches will be possible again, but coverage will be less than yesterday. The main threat from storms that develop today will be lightning and brief, strong outflow winds. Flooding is NOT forecast today.
Primetime: 1PM to 10PM
Southwest Slope, Northwest Slope, Northern Mountains & Grand Valley:
Mercury levels are on the rise. Afternoon high temperatures over the Grand Valley will likely reach the 95F mark. Over the Northwest/Southwest Slope, highs will reach into the low 90Fs. Mountain valleys will reach the upper 70Fs, and 80Fs forecast for the transition zone from the Slopes to high terrains. Rainfall is not forecast.
Southeast Plains, Raton Ridge, Palmer Ridge, Northeast Plains & Urban Corridor:
It will feel like summer this afternoon with clear skies and near 90F temperatures for the I-25 corridor and eastern plains. The Palmer and Raton Ridge will likely reach into the low to mid-80Fs. Rainfall is not forecast this afternoon.
