In Brief:
Very warm temperatures are the rule for the next week with daily (low) chances of thunderstorms in the afternoon/ early evening.Update 6/3 10am:
The dryline is expected to set up many 10's of miles east of Longmont. Severe weather/thunderstorm will form out on the Plains and move away to the east. Really warm weather continues.
The tropical system in the Gulf has developed into a tropical storm Cristobal. It is forecasted to remain a tropical storm as it travels up to the central Louisiana coast for a pre-dawn landfall on Monday (Figure 1 update).
End 6/3 10am update.
Forecast Discussion:
Figure 1 in the gallery shows the giant ridge dominating the center of the nation. I saw one neighborhood station reach 99F on Monday. Wow! That ridge won't go far. The white and grey shades in the water vapor satellite image show that we have moisture in place across the state (Figure 2). There is moisture flowing in from the Pacific and the Gulf of Mexico. A weak front will keep drifting back and forth across the state giving us a focus for convection in the afternoons when heating is at a maximum (Figure 3). As we hover around 90F - we'll have a (low) chance of thunderstorms every afternoon (Figure 4).
The Longer Range Forecast:
That front, along with a short wave in the upper air flow will bring severe weather chances almost back to I-25 on Wednesday (primarily for large hail and high winds, Figure 5). Over the next 5 days, the central mountain and far northeastern corner of Colorado will see good rains. Longmont should remain below 1/2 inch on average (Figure 6). We finally see a cool down around Tuesday the 9th. This comes as a trough finally begins to displace the ridge next week (Figure 7). Stay cool out there.
