|
Main Seasons |
: |
|
Summer |
|
Rainy |
|
Winter |
|
Spring |
|
Maximum and
Minimum Temperature at Selected Centers |
: |
|
Center |
Max (Celsius) |
Min (Celsius) |
|
Chittagong |
34 |
12 |
|
Rangamati
|
36 |
11 |
|
Noakhali |
35 |
13 |
|
Comilla |
34 |
11 |
|
Sylhet |
33 |
12 |
|
Dhaka |
34 |
13 |
|
Faridpur |
35 |
11 |
|
Mymensingh |
35 |
10 |
|
Barisal |
33 |
10 |
|
Jessore |
36 |
9 |
|
Khulna |
35 |
11 |
|
Bogra |
34 |
11 |
|
Dinajpur |
35 |
10 |
|
Rajshahi |
35 |
10 |
|
Rangpur |
33 |
10 |
(In
Millimeter) |
|
Total Rainfall
Of Selected Cities Over the Year (2001): |
: |
|
Dhaka |
Chittagong |
Sylhet |
Khulna |
Rajshahi |
Barisal |
|
1714 |
2065 |
3468 |
1657 |
1350 |
1971 |
|
|
Strom Warning
System |
: |
Storms generally occur in
Bangladesh in the months of April-May and
October-November. The Meteorological Department uses
separate codes of signals for storm warnings at maritime
and river ports. These codes are given below in
abbreviated forms. It should be noted that the signal
numbers in the two codes do not carry the same
significance and in particular, that higher signal
numbers within the great danger maritime groups indicate
differences in storm location not difference in storm
intensity.
|
|
Storm warning signals for use at Maritime Ports. |
: |
|
a)
Distant signals: |
|
1. |
Cautionary: There is a region of squally
weather in which a storm may be formed.
|
|
2. |
Warning: A storm has formed |
|
b)
Local signals:
|
3. |
Cautionary: Port is threatened by squally
weather. |
|
4. |
Warning: Port is threatened by a storm, but
danger not yet sufficiently great to justify
extreme precautionary measures. |
|
5-7 |
Danger:
|
|
|
(Port will experience severe weather from a
storm of slight or moderate intensity.) |
|
5. |
Storm expected to cross the coast to the south
of the port. |
|
6. |
Storm expected to cross the coast to the north
of the port. |
|
7. |
Storm expected over or near the port.
|
|
8-10 |
Great Danger: |
|
|
(Port will experience severe weather from a
storm of great intensity.) |
|
8. |
Storm expected to cross the coast to the north
of the port |
|
9 |
Storm expected to cross the coast to the north
of the port |
|
10. |
Storm expected over or near the port.
|
|
|
Failure of
Communication |
: |
Communications with the
meteorological warning center have broken down and the
local officer considers that there is danger of bad
weather. |
|
Storm warning
signals for use at River Ports. |
: |
1.
Cautionary |
|
Area threatened by squally winds. Watch out for further
developments. |
|
2.
Warning |
|
A storm or nor-western is likely to strike the area |
|
3. Danger |
|
A storm will soon strike the area. All vessels seek
shelter immediately. |
|
4. Great Danger |
|
A violent storm will soon strike the area. |
|
|
|
Wind Speed
estimation over land in Bangladesh According to Beaufort
scale:
|
: |
|
Name |
Indication |
Wind speed (at 33ft) MPH |
|
Calm |
Smoke rises vertically |
Less than –1 |
|
Light air |
Wind direction showed by smoke drift, but not by
wind -vane |
1-3 |
|
Light breeze |
Wind felt on face. Leaves rustle, wind vane
moves |
4-7 |
|
Gentle breeze |
Leaves and small twigs in constant motion. Light
flag extended. |
8-12 |
|
Moderate breeze |
Dust and loose paper raised |
13-18 |
|
Fresh Breeze |
·
Small leafy trees sway
·
Small waves on water.
·
Surfaces from crests. |
19-24 |
|
Strong breeze |
·
Large branches sway
·
Telephone Wires Whistle
·
Difficult to use umbrella |
25-31 |
|
Moderate gale |
·
Whole trees sway
·
Difficult to walk against the wind |
32-38 |
|
Fresh gale |
·
Twigs broken off trees.
·
Wind impedes progress when walking |
39-46 |
|
Strong gale |
·
Branches broken off trees
·
Slight structural Damage to Buildings. |
47-54 |
|
Whole gale |
·
Trees uprooted
·
Considerable structural damage to Buildings |
55-63 |
|
Storm |
·
Widespread damage to trees and properties
|
64-74 |
|
Hurricane |
·
Widespread damage to trees and properties
|
75 Above |
In Bangladesh, wind speed of Hurricane force occurs in
cyclones and Tornadoes. Wind speed in Lin-Squalls Nor-Wester)
are generally of forces 6-8, occasionally 9-10.
Top
|
|
ECOLOGY |
|
The
information below has been drawn from the 1993 United
Nations List of National Parks and Protected Areas of
the WCMC Protected Areas Database. Only those sites
meeting strict criteria are included, principally those
meeting IUCN Management Category I-V and covering more
than 1,000ha.
National Park:
|
Name |
Category |
Location |
Size |
Year |
|
Bhawal |
V |
24 01'N/ 90 20'E |
5,022 |
1982 |
|
Madhupur |
V |
24 45'N/ 90 05'E |
8,436 |
1982 |
Wildlife Sanctuary
|
Name |
Category |
Location |
Size |
Year |
|
Chunati |
IV |
21 40'N/ 92 07'E |
7,764 |
1986 |
|
Pablakhali |
IV |
23 08'N/ 92 16'E |
42,087 |
1983 |
|
Rema-Kalenga |
IV |
24 05'N/ 91 37'E |
1,095 |
1981 |
|
Sundarbans
East |
IV |
21 53'N/ 89 47'E |
5,439 |
| |
