North America - Pressure tendency (hPa last 3 hours)
Saturday 23 May 2015 07:00 BST

Stations: 2045 SLP tendency
Abbotsford Airport (58 m, British Columbia) - 1.7
Aberdeen Airport (397 m, South Dakota) - 1.7
Abilene Airport (546 m, Texas) - 0.2
Adak (5 m, Alaska) - 1.7
Agassiz (15 m, British Columbia) - 2.0
Akron- Canton Airport (377 m, Ohio) - 0.4
Albany Airport (89 m, New York) - 3.9
Albuquerque Airport (1618 m, New Mexico) - 1.5
Alert (65 m, Nunavut) - 0.7
Alfred and Plantagenet (57 m, Ontario) - 0.5
Algonquin Provincial Park (410 m, Ontario) - 0.9
Allen Army Airfield (391 m, Alaska) - 0.5
Alpena (211 m, Michigan) - 0.0
Amherst (23 m, Nova Scotia) - 1.0
Amqui (166 m, Quebec) - 0.9
Aniak Airport (26 m, Alaska) - 1.7
Apalachicola Airport (6 m, Florida) - 0.4
Arcata-Eureka Airport (18 m, California) - 1.0
Armstrong (243 m, Ontario) - 0.0
Arviat Airport (10 m, Nunavut) - 2.8
Asheville Regional Airport (661 m, North Carolina) - 0.5
Assiniboia Airport (726 m, Saskatchewan) - 0.7
Astoria Regional Airport (7 m, Oregon) - 0.8
Athens Ben Epps Airport (247 m, Georgia) - 0.2
Atikokan (389 m, Ontario) - 0.2
Atlanta Airport (315 m, Georgia) - 0.1
Atlantic City Airport (20 m, New Jersey) - 2.9
Augusta Regional Airport (45 m, Georgia) - 0.4
Austin (189 m, Texas) - 0.4
Austin Straubel Intl. Airport (209 m, Wisconsin) - 0.0
Badger (103 m, Newfoundland) - 8.3
Baie-Comeau (130 m, Quebec) - 1.0
Baie-Comeau (22 m, Quebec) - 0.8
Baie-D'Urfé (39 m, Quebec) - 1.3
Baker Lake (51 m, Nunavut) - 0.3
Baker Lake Airport (18 m, Nunavut) - 0.0
Ballenas Island (13 m, British Columbia) - 1.6
Baltimore Airport (47 m, Maryland) - 2.1
Bancroft (331 m, Ontario) - 1.0
Banff (1397 m, Alberta) - 2.1
Barkley Regional Airport (126 m, Kentucky) - 0.4
Barrage Angliers (267 m, Quebec) - 1.4
Barrhead (648 m, Alberta) - 1.1
Barrie-Oro (289 m, Ontario) - 0.1
Bas Caraquet (5 m, New Brunswick) - 0.4
Beatrice Climate (297 m, Ontario) - 0.0
Beauceville (229 m, Quebec) - 0.6
Beausoleil (183 m, Ontario) - 1.7
Beaven Island (16 m, Nova Scotia) - 0.8
Beaverlodge (745 m, Alberta) - 1.2
Berens River (222 m, Manitoba) - 0.0
Beresford Airport (59 m, New Brunswick) - 0.5
Bernard Harbour (65 m, Alberta) - 1.1
Bethel Airport (44 m, Alaska) - 2.9
Bettles Airport (196 m, Alaska) - 1.3
Billings Logan Intl. Airport (1088 m, Montana) - 0.8
Bishop Intl. Airport (233 m, Michigan) - 0.3
Bismarck Airport (505 m, North Dakota) - 0.8
Blackcomb Base Sliding Center (937 m, British Columbia) - 2.1
Blackcombe Mtn Base (659 m, British Columbia) - 2.4
Blanc-Sablon Airport (32 m, Quebec) - 2.9
Blosser Airport (452 m, Kansas) - 0.2
Blue Grass Airport (301 m, Kentucky) - 0.1
Blue River (683 m, British Columbia) - 2.1
Boise Airport (872 m, Idaho) - 1.4
Bonavista (26 m, Newfoundland) - 7.7
Bonavista (30 m, Newfoundland) - 1.0
Bonilla Island (17 m, British Columbia) - 1.3
Bouctouche (36 m, New Brunswick) - 0.7
Bow Valley (1298 m, Alberta) - 1.6
Bradley Intl. Airport (55 m, Connecticut) - 2.2
Brandon Airport (416 m, Manitoba) - 0.4
Bratt'S Lake (580 m, Saskatchewan) - 0.5
Brevoort Island Airport (376 m, Nunavut) - 0.1
Brier Island (16 m, Nova Scotia) - 0.1
Broadview AP (600 m, Saskatchewan) - 0.5
Brockville (121 m, Ontario) - 1.4
Brooks (747 m, Alberta) - 1.1
Broughton Island (584 m, Nunavut) - 1.0
Brownsville/South Padre (8 m, Texas) - 1.3
Buffalo Narrows Airport (440 m, Saskatchewan) - 1.8
Buffalo Niagara Intl. Airport (219 m, New York) - 1.0
Burlington Intl. Airport (104 m, Vermont) - 1.3
Burlington Piers (AUT) (77 m, Ontario) - 0.5
Burns Airport (1271 m, Oregon) - 0.9
Burns Lake Campbell Scientific (713 m, British Columbia) - 1.3
Buttonville Airport (198 m, Ontario) - 0.4
CFB Bagotville (159 m, Quebec) - 0.1
CFB Borden (224 m, Ontario) - 0.2
CFB Valcartier Airport (168 m, Quebec) - 0.6
Calgary Intl. Airport (1084 m, Alberta) - 1.2
Callaghan Valley (884 m, British Columbia) - 1.8
Cambridge Bay Airport (23 m, Nunavut) - 4.9
Cameron Falls (AUT) (233 m, Ontario) - 1.3
Cap D'Espoir (15 m, Quebec) - 1.3
Cap Tourmente National Wildlife Area (6 m, Quebec) - 0.5
Cap-Chat (5 m, Quebec) - 0.8
Cape Dyer AP (393 m, Nunavut) - 1.1
Cape Hooper (393 m, Nunavut) - 1.2
Cape Kakkiviak (551 m, Newfoundland) - 0.8
Cape Kiglapait (834 m, Newfoundland) - 0.0
Cape Mercy (583 m, Nunavut) - 1.2
Cape Parry AP (14 m, Northwest Territories) - 2.5
Cape Race (27 m, Newfoundland) - 7.6
Cape St James CS (92 m, British Columbia) - 0.9
Capital Region Intl. Airport (266 m, Michigan) - 0.2
Caribou Airport (191 m, Maine) - 0.3
Caribou Point (AUT) (2 m, Nova Scotia) - 0.3
Carmacks (632 m, Yukon) - 0.4
Cartwright Airport (15 m, Newfoundland) - 2.6
Casper (1612 m, Wyoming) - 0.3
Castlegar Airport (495 m, British Columbia) - 0.0
Cathedral Point (31 m, British Columbia) - 2.1
Central Nebraska Regional Airport (566 m, Nebraska) - 0.2
Channel-Port aux Basques (40 m, Newfoundland) - 1.8
Charleston Intl. Airport (15 m, South Carolina) - 0.0
Charlevoix (Mrc) (719 m, Quebec) - 0.2
Charlottetown Airport (79 m, Prince Edward Island) - 0.6
Chatham-Kent (178 m, Ontario) - 0.6
Chattanooga Metropolitan Airport (210 m, Tennessee) - 0.1
Chevery (8 m, Quebec) - 2.8
Cheyenne Regional Airport (1872 m, Wyoming) - 0.0
Chicoutimi (163 m, Quebec) - 0.1
Claresholm (1012 m, Alberta) - 0.6
Clayton Municipal Airpark (1515 m, New Mexico) - 1.1
Cleveland Hopkins Intl. Airport (245 m, Ohio) - 0.6
Clinton (1057 m, British Columbia) - 0.8
Clyde AP (27 m, Nunavut) - 0.8
Cobourg (78 m, Ontario) - 0.8
Cold Lake Airport (541 m, Alberta) - 1.1
Collingwood (180 m, Ontario) - 0.2
Collins Bay (492 m, Saskatchewan) - 1.8
Columbia Metropolitan Airport (69 m, South Carolina) - 0.3
Columbia Regional Airport (274 m, Missouri) - 0.3
Colville Lake (259 m, Northwest Territories) - 2.4
Comox (26 m, British Columbia) - 1.8
Concord Airport (105 m, New Hampshire) - 3.2
Coral Harbour Airport (64 m, Nunavut) - 0.4
Corner Brook (152 m, Newfoundland) - 3.2
Coronach (756 m, Saskatchewan) - 0.9
Coronation (791 m, Alberta) - 1.1
Corpus Christi Intl. Airport (15 m, Texas) - 1.3
Cove Island (181 m, Ontario) - 0.1
Covington Airport (267 m, Kentucky) - 0.5
Craig (1915 m, Colorado) - 1.2
Cranbrook Airport (939 m, British Columbia) - 3.2
Creston Campbell Scientific (646 m, British Columbia) - 3.7
Croker Rvr (69 m, Northwest Territories) - 0.6
Cross City Airport (13 m, Florida) - 0.2

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2015