{"id":7222,"date":"2018-06-13T08:09:39","date_gmt":"2018-06-13T14:09:39","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=7222"},"modified":"2018-06-14T05:39:26","modified_gmt":"2018-06-14T11:39:26","slug":"ftb-06-13-2018-battle-between-dry-air-and-moist-air","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=7222","title":{"rendered":"FTB 06-13-2018: Battle Between Dry Air and Moist Air"},"content":{"rendered":"

Issue Date: 6\/13\/2018
\nIssue Time: 8:12 AM<\/p>\n

A LOW FLOOD THREAT IS FORECAST TODAY FOR PORTIONS OF THE NORTHEAST PLAINS, URBAN CORRIDOR, PALMER RIDGE, AND SOUTHEAST PLAINS.<\/em><\/p>\n

Colorado is ground-zero for a battle between dry air and moist air, both in the mid-levels and at the surface. Shown in the water vapor imagery below is the mid-level battle, where moist air from the south is attempting to nudge northward into western Colorado. This moist air will make a valiant effort, pushing north towards I-70 over the High Country and Western Slope. This moisture will be sufficient enough to produce isolated<\/span>, high-based showers\/thunderstorms over southern and central portions of the High Country, producing very little rain (if any), with plenty of lightning and virga<\/span> painting the sky.<\/p>\n

\"\"<\/a><\/p>\n

The battle in the low-levels will take place east of the mountains, where east-southeasterly flow has pushed moisture rich low-level air into eastern Colorado. Dry air from the west will try to scour this moisture, with a dry line setting up along, or just east of, the foothills. The moisture, combined with daytime heating, will be enough to produce isolated<\/span>-to-scattered<\/span> thunderstorms, with the best coverage and intensity occurring east of I-25. A couple of the storms will become severe, with the potential to produce hail up to 1.5-2 inches in diameter and strong winds greater than 55 mph.<\/p>\n

Today’s Flood Threat Map<\/strong><\/h3>\n

For more information on today’s flood threat, see the map below (hover over threat areas for more details). For Zone-Specific forecasts, jump below the map.<\/p>\n

\"\"<\/a><\/p>\n

\"Flood<\/div>\n

Zone-Specific Forecasts<\/strong><\/h3>\n

Front Range, Urban Corridor, Palmer Ridge, Northeast Plains, Southeast Plains, and Raton Ridge:<\/strong><\/h4>\n

Isolated<\/span>-to-scattered<\/span> thunderstorms will rumble today\/tonight. Without a “trigger” in the mid-\/upper-levels, it will be up to low-level convergence and daytime heating to produce adequate forcing for thunderstorm development. With south-southeasterly winds at the surface, the Denver cyclone<\/span> is expected to aid thunderstorm development, likely kicking off a couple thunderstorms in the vicinity of the Denver metro area. Most storms will struggle to produce heavy rain thanks to dry air in the mid-levels zapping some of the potential, but hail clogging drainage and brief periods of heavy rainfall will likely produce a couple instances of street\/field ponding in poorly drained areas. This is the culprit behind the low flood threat. Maximum rain rates are as follows:<\/p>\n

Front Range: 0.05-0.25 inches\/hour
\nUrban Corridor, Palmer Ridge, and Raton Ridge: 0.5-1.0 inches\/hour
\nNortheast Plains and Southeast Plains: 1.0-1.5 inches\/hour<\/p>\n

Timing: 2 PM – 11 PM, with a couple lingering thunderstorms over the Northeast and Southeast Plains until 2 AM<\/p>\n

Northern Mountains, Northwest Slope, Central Mountains, Grand Valley, San Juan Mountains, Southeast Mountains, San Luis Valley, and Southwest Slope:<\/strong><\/h4>\n

Dry and hot will be the main weather story today, with only a few isolated<\/span>, high-based thunderstorms rumbling during the afternoon and evening hours south of I-70 where mid-level moisture from the south can have an impact. Dry air in the low-levels will keep rain rates low, so no flash flooding<\/span> is expected. Maximum rain rates will be 0.05-0.10 inches\/hour. North of I-70, expect dry conditions and mostly sunny skies to rule the day.<\/p>\n

Timing: 1 PM – Midnight<\/p>","protected":false},"excerpt":{"rendered":"

Issue Date: 6\/13\/2018 Issue Time: 8:12 AM A LOW FLOOD THREAT IS FORECAST TODAY FOR PORTIONS OF THE NORTHEAST PLAINS, URBAN CORRIDOR, PALMER RIDGE, AND SOUTHEAST PLAINS. Colorado is ground-zero for a battle between dry air and moist air, both in the mid-levels and at the surface. Shown in the water vapor imagery below is […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/7222"}],"collection":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7222"}],"version-history":[{"count":2,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/7222\/revisions"}],"predecessor-version":[{"id":7231,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/7222\/revisions\/7231"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7222"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7222"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}