Statement from the Chicago National Weather Service
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1030 AM CDT MON OCT 25 2010
HOW THE UPCOMING CYCLONE RANKS AMONG OTHER NOTABLE CYCLONES OVER THE
GREAT LAKES.
RANK EVENT DATE MINIMUM CENTRAL PRESSURE
1. GREAT OHIO BLIZZARD 1/26/1978 950 HPA /28.05 IN/
2. UPCOMING EVENT 10/26-27/2010 959 HPA* /28.35 IN/
3. ARMISTICE DAY STORM 11/11/1940 967 HPA /28.55 IN/
ANNIVERSARY STORM 11/10/1998 967 HPA /28.55 IN/
4. CYCLONE OF 1913 11/7-9/1913 968 HPA /28.60 IN/
/AKA WHITE HURRICANE/
5. EDMUND FITZGERALD STORM 11/10/1975 980 HPA /28.95 IN/
* AVERAGE AMONG SEVERAL CURRENT FORECAST MODELS
Likely one of the deepest areas of low pressure ever recorded in the Great Lakes region by tomorrow afternoon is starting to really deepen. As the pressures continue to fall, winds continue to increase all across the Plains and eventually to the east across the Ohio valley and Great Lakes. Winds in the atmosphere are extremely strong with this storm system from top to bottom. So winds outside of any t'storm could exceed 50 mph today across the Plains and over 70mph across the Great Lakes and Ohio Valley. Unfortunately my computer is not allowing me to post any pictures to my blog but I'll try to get them on later.
Now of course the severe weather threat is on the higher side with this storm system based on the difference of temperatures, wind energy and plenty of moisture surging north from the Gulf of Mexico. Today's target area is across the mid Mississippi Valley from eastern Iowa and Missouri during this afternoon then quickly racing east across Wisconsin, Illinois and Arkansas overnight.
Then by tomorrow morning the likely squall line will continue to surge eastward across Indiana, southern Michigan, Kentucky and Ohio during the day on Tuesday. This line will have numerous reports of damaging winds and the possibility of brief tornadoes. This is a possible dangerous situation across the upper and middle Mississippi Valley and into the Great Lakes and Ohio Valley on Tuesday. Please make sure you keep up with the weather as conditions will change very quickly.
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