Astronomy, Photography and Weather
January 23, 2021, 04:37:26 pm
Welcome, Guest. Please login or register.

Login with username, password and session length
News: IAA lecture programme continues alternate Wednesdays from September - an excellent programme of lectures- Queens University Belfast - Bell Lecture Theatre. Also keep an eye out for the Summer Events
 
  Home Help Search Gallery Staff List Login Register  

Spanish Plume/Severe Storms? - England/UK - Mon & Tues June 27th & 28th

Pages: 1 [2]
  Print  
Author Topic: Spanish Plume/Severe Storms? - England/UK - Mon & Tues June 27th & 28th  (Read 4104 times)
Anton
Sr. Member
****
Posts: 306


It Was Clear


View Profile WWW
« Reply #15 on: June 27, 2011, 10:56:06 am »

Updated Monday 10:51 AM

SKYWARN UK SEVERE THUNDERSTORM WATCH #031
ISSUED: 2130UTC SATURDAY 25TH JUNE 2011 (GJ)

SKYWARN UK HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE FOLLOWING REGIONS:
NORTHERN ENGLAND
NORTHEAST WALES
WEST MIDLANDS
EAST MIDLANDS
EAST ANGLIA

IN EFFECT FROM 1100UTC UNTIL 2100UTC SUNDAY 26TH JUNE 2011

WARM MOISTURE PLUME DESTABILISED UNDER JETSTREAM FORCING

THERE IS A POSSIBILITY OF SEVERE THUNDERSTORMS AFFECTING THE INDICATED REGIONS IN THE TIME PERIOD SPECIFIED. THREATS WITHIN THIS WATCH INCLUDE, BUT ARE NOT LIMITED TO:
HEAVY RAIN...STRONG GUSTS...HAIL...LIGHTNING...FLASH FLOODING...FUNNELS/TORNADOES

DISCUSSION:
THERE IS NOW STRONG SHORT-RANGE CONFIDENCE IN A POSSIBLY SEVERE CONVECTIVE RISK AFFECTING MOST OF THE NORTHEN HALF OF ENGLAND DURING SUNDAY AFTERNOON AND EVENING. A WARM AND MOIST AIRMASS IS IN PLACE ACROSS THE UK, WITH A STRONG FLOW OF WIND THROUGH THE UPPER LAYERS ALONG THE RIGHT EDGE OF THE JETSTREAM. CAPE VALUES OF OVER 1000J/KG MAY BE ACHIEVED IN STRONG EARLY AFTERNOON SUNSHINE, WITH INCREASING DEEP LAYER SHEAR PROVIDING ORGANISATION FOR STRONG STORMS. THE RISK COVERS ALL AREAS, BUT STRONGEST STORMS ARE EXPECTED AROUND THE EAST MIDLANDS PRIMARILY, WITH POSSIBILITIES OF MODERATE HAIL SIZES EXTENDED TO THE NORTHEAST OF ENGLAND AND THE PENNINES. SUCCESSIVE STORMS MAY LEAD TO INSTANCES OF FLASH FLOODING. PLEASE MONITOR TRAVEL INFORMATION AS NECESSARY. THIS WATCH MAY BE UPGRADED.

Current data from my Davis Pro Weather Station 27 June 2011 10:53:00

Temperature Temps 28.8C
Heat Index       30.8
Dew Point        20.5
Rel Humidity     61%

Pressure (hPa):
Current          1012.36
Trend (per hour) -0.23


Report Spam   Logged



Pages: 1 [2]
  Print  
 
Jump to:  

Bookmark this site! | Upgrade This Forum
SMF For Free - Create your own Forum

Powered by SMF | SMF © 2016, Simple Machines
Privacy Policy