|
Anton
|
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 28.8°C
Heat Index 30.8
Dew Point 20.5
Rel Humidity 61%
Pressure (hPa):
Current 1012.36
Trend (per hour) -0.23
|
|
|
|
|
|
|
