[youtube=http://www.youtube.com/watch?v=tv0z9K6qDKw]2013 0630 The Antithesis of Summer

Scott Stevens Scott Stevens

Published on Jun 30, 2013

The jet stream is setting up in a pattern that I have NEVER seen during the summer season. The flow is straight from the Canadian Arctic for the eastern US with the West under this monster hot high pressure with many Western weather stations potentially reaching all-time record high temperatures.

The jet stream map below is a forecast from this evening for this coming Tuesday evening. Note that Colorado is smack under this “highly anomalous” summer pattern.

I’m going to do a video and will post it in the morning. In the meanwhile the following the forecast discussion from the NWS Weather Prediction Center in College Park MD.

EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1158 AM EDT THU JUN 27 2013

VALID 12Z SUN JUN 30 2013 – 12Z THU JUL 04 2013

…RECORD HEAT IN THE WEST…
…SOAKING RAINS IN THE EAST…

THE EXTREME MERIDIONAL PATTERN AT THE MEDIUM RANGE, AGREED UPON BY ALL THE GLOBAL NUMERICAL MODELS NOW, IS THE VERY ANTITHESIS OF METEOROLOGICAL SUMMER AT THE TEMPERATE LATITUDES–A TIME WHEN THE BAROTROPIC SUBTROPICAL RIDGE NORMALLY HOLDS SWAY. THE HIGHLY ANOMALOUS FLOW WILL LEAD TO HIGHLY ANOMALOUS SENSIBLE WEATHER, WITH SCORCHING HEAT IN THE WEST AND DAYS OF CLOUDBURSTS IN THE EAST.

TRIPLE-DIGIT DAILY MAXIMUM TEMPERATURES ARE EXPECTED THROUGHOUT THE LOWER ELEVATIONS OF THE INTERIOR WEST, WITH SOME LOCATIONS APPROACHING OR EXCEEDING ALL-TIME HIGHS. THE ANOMALIES–850 TEMPERATURES, 500 HEIGHTS, ET CETERA–WILL BE GREATEST OVER THE NORTHWEST. THE HEAT WAVE OVER WASHINGTON STATE EAST OF THE CASCADES WILL BE OF HISTORIC PROPORTIONS, BOTH IN TERMS OF DAILY MAXIMA AND DURATION OF THE STRING OF TRIPLE-DIGIT DAYS. NORMALLY HOT PLACES LIKE THE CENTRAL VALLEY OF CALIFORNIA, THE GREAT BASIN, AND THE DESERTS OF THE SOUTHWEST MAY EVEN OUTDO THEMSELVES, WITH LOCAL EFFECTS LIKE SOIL MOISTURE AND THERMAL WIND TERRAIN EDDIES DICTATING WHICH AREAS SEE NEW ALL-TIME RECORDS.

THE MOST PROLIFIC RAINFALL IN THE EAST IS EXPECTED ALONG THE GULF
COAST OF FLORIDA AND THE SOUTHEAST ATLANTIC COAST, WHERE
PERSISTENT DEEP AND FOCUSED SOUTHERLY FLOW WILL KEEP MOISTURE FLUX AND PRECIPITABLE WATER HIGH. FREQUENT SHOWERS ARE ALSO ANTICIPATED FROM THE OHIO VALLEY TO THE NORTHERN MID ATLANTIC AND EASTERN NEW ENGLAND STATES IN ASSOCIATION WITH STRONG SYNOPTIC-SCALE FORCING.

Related:

[ video ] Meteorologist Scott Stevens: The Oklahoma Tornado — “We have record highs, record cold, record droughts — all without measure in recorded human history — and we want to blame it on CO2? We want to blame it on climate change? No…. There is NO SUCH THING as natural weather anymore”