We’ve got weather on our minds
Well, it is that time of year again, the rainy season, the windy season, or if you prefer, Hurricane* season. It has been remarkably quiet so far this year but with August beginning tomorrow, it’s somewhat appropriate that the southern Caribbean has its first genuine threat to monitor.
- June: too soon.
- July: stand by.
- August: look out you must.
- September: remember.
- October: all over.
What has so far been named Invest 99 is what is on everyone’s mind down here right now and with it’s very southerly position (approx. 9˚ N), IF it spins up, there is a pretty good chance that it will effect our area. While we’re still in wait-and-see mode, we’re going to join several of our friends this morning on a trip into town so that we can stock up on some provisions, money and fuel, just in case!
The big worry about this disturbance is its very southerly positioning, which means that if it develops, at least one computer model has it moving right over Grenada.
*The terms “hurricane” and “typhoon” are regionally specific names for a strong “tropical cyclone”. A tropical cyclone is the generic term for a non-frontal synoptic scale low-pressure system over tropical or sub-tropical waters with organized convection (i.e. thunderstorm activity) and definite cyclonic surface wind circulation (Holland 1993). Tropical cyclones with maximum sustained surface winds of less than 17 m/s (34 kt, 39 mph) are usually called “tropical depressions” (This is not to be confused with the condition mid-latitude people get during a long, cold and grey winter wishing they could be closer to the equator ). Once the tropical cyclone reaches winds of at least 17 m/s (34 kt, 39 mph) they are typically called a “tropical storm” or in Australia a Category 1 cyclone and are assigned a name. If winds reach 33 m/s (64 kt, 74 mph), then they are called:
- “hurricane” (the North Atlantic Ocean, the Northeast Pacific Ocean east of the dateline, or the South Pacific Ocean east of 160E)
- “typhoon” (the Northwest Pacific Ocean west of the dateline)
- “severe tropical cyclone” or “Category 3 cyclone” and above (the Southwest Pacific Ocean west of 160°E or Southeast Indian Ocean east of 90°E)
- “very severe cyclonic storm” (the North Indian Ocean)
- “tropical cyclone” (the Southwest Indian Ocean)