NetNews Usenet Archive 1993 #3

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Path: sparky!uunet!olivea!sgigate!sgi!cdp!larris From: larris@igc.apc.org (Lelani Arris) Newsgroups: sci.geo.meteorology Subject: Climatic Perspectives V15 #2 Jan 4- Message-ID: <1466900287@igc.apc.org> Date: 21 Jan 93 16:48:00 GMT Sender: Notesfile to Usenet Gateway <notes@igc.apc.org> Lines: 410 Nf-ID: #N:cdp:1466900287:000:19537 Nf-From: cdp.UUCP!larris Jan 21 08:48:00 1993 From: Lelani Arris <larris> Subject: Climatic Perspectives V15 #2 Jan 4-10 ================================================================ CLIMATIC PERSPECTIVES - PERSPECTIVES CLIMATIQUES ================================================================ Jan 4 to Jan 10 1993 du 4 au 10 janvier 1993 Vol 15 No. 02 Vol 15 N 02 ---------------------------------------------------------------- Managing editor: A.Saulesleja Editeur responsable Editors: English Andrew Radomski Redacteurs: Anglais : French Alain Caillet : Francais Forecasts: Aaron Gergye Previsions Data manager: M. Skarpathiotakis Donnees Computer support: Robert Eals Informatique CLIMATIC PERSPECTIVES is a weekly publication (disponible aussi en franais) of the Canadian Climate Centre, Atmospheric Environment Service, 4905 Dufferin St., Downsview Ontario, Canada - M3H 5T4 - Tel.(416) 739-4438/4436 The purpose of the publication is to make topical information available to the public concerning the Canadian Climate and its socio-economic impact. The data in this publication are based on unverified reports from approximately 225 Canadian synoptic weather stations. Information concerning climatic impacts is gathered from AES contacts with the public and from the media. Articles do not necessarily reflect the views of the Atmospheric Environment Service. PERSPECTIVES CLIMATIQUES est un hebdomadaire (available also in English) du Centre canadien de climatologie, Service de l'environnement atmosphrique, 4905 rue Dufferin Downsview (Ont.), Canada M3H 5T4 - Tel. (416) 739-4438/4440 Cette publication a pour but d'informer le public sur l'actualit climatique canadienne et ses consquences socio-conomiques. Les donnes publies dans ce bulletin sont extraites des observations non vrifies qui nous parviennent d'environ 225 stations synoptiques canadiennes. L'information concernant les impacts est obtenue par contacts entre le SEA et le public et les mdias. Les articles ne rfl tent pas ncessairement l'opinion du Service de l'environnement atmosphrique. ---------------------------------------------------------------- Western Canada... Arctic chill continues "In with the new and out with the old". Even though the new year brought in a slight temperature reprieve for residents of western Canada, the influence of a persistent Arctic air mass continued to be felt as near record low temperatures were recorded. In contrast however, a milder Pacific air mass infiltrated the higher latitudes of the western Arctic, providing a pleasant change from the usual barrage of bitterly cold weather. In British Colombia a persistent cold spell, along with much ice and snow, forced some logging operations to shut down. On the lower Fraser River logs iced-up and operations generally slowed down. Sub-freezing temperatures persisted since Christmas Day. Southern parts of the interior, such as Kamloops, have reported temperatures of -2 C almost every day. In addition, Vancouver has had measurable snow on the ground for 14 consecutive days - their fifth longest stretch on record. Even balmy Victoria did not escape the cold temperatures, as snow cover persisted into its third week. To the delight of many, the local ponds froze over making outdoor skating events a big hit. Not so popular however, with many home owners, was the high incidence of frozen water pipes. These were insufficiently protected from nighttime temperatures near -7.4 C. Needless to say, wood piles were depleted at a rapid rate. In the coastal valleys, outflow winds of Arctic air produced clear blue skies but the cold air and strong winds generated dangerous wind chills of -50 C. In the interior, these strong winds helped set off avalanches, closing some passes. In the valley horticultural districts there was considerable stress on fruit trees from deep freeze. On the Prairies, an Arctic high pressure ridge dominated the weather. Light snowfalls were reported at the end of the period as the cold air re-established itself, causing minimum temperatures to drop as low as -37 C at Edmonton. Warm in the Northwest A record warm Pacific air mass penetrated into the Yukon and Mackenzie Valley region, and the mercury climbed above zero. Although the warmth was welcome, residents in some communities became concerned about food supplies stored in unrefrigerated buildings. The warm weather was accompanied by strong southwest winds and blowing and drifting snow which forced the closure of some roads. Rain drenches Ontario and Quebec A storm, emerging from the American southwest, brought heavy rain across southern and south-central Ontario on January 4. Accompanying this storm, record warm temperatures pushed the mercury up to 12.2 C at Toronto. Many local creeks and streams overflowed as rainfall, totalling 50 mm, could not be soaked into the frozen or already saturated ground. This was of particular concern in the Trent-Severn Waterway area where residents were alerted to watch for local flooding. The storm passed into Quebec, producing record warm temperatures and rainfalls of up to 55 mm in the St. Lawrence Valley. This caused some unexpected ice break-up and jamming, prompting some hasty evacuations. Unusual iceberg sighting Over the Christmas holidays, a large, two pinnacle iceberg was sighted drifting eastwards across the mouth of Conception Bay, Nfld. The iceberg's mass was estimated between one to two million tonnes. There were at least two other sightings of icebergs last month. Although iceberg sightings in the late spring and early summer are not unusual local residents can not recall ever seeing icebergs at this time of year. The origin of the iceberg is probably from the northwest coast of Greenland. A look ahead... For the week of January 18, above-normal temperatures are expected across Ontario and the western half of Quebec. Elsewhere below-normal temperatures will prevail. ---------------------------------------------------------------- Froid arctique dans l'ouest L'ancien c de le pas au nouveau. Mme si la nouvelle anne a apport un lger redressement de temprature dans l'ouest du Canada, l'influence d'une masse persistante d'air arctique a continu de se manifester, quand on a enregistr des minimums presque absolus de temprature. En revanche, une masse d'air du Pacifique, bien plus douce, s'est infiltre aux latitudes plus leves, en engendrant un agrable changement par rapport l'usuel temps glacial. En Colombie-Britannique, une priode persistante de froid, qui a engendr beaucoup de glace et de neige, a entran la fermeture d'exploitations foresti res, tandis que dans le cours infrieur du Fraser, nombre de probl mes sont survenus du fait de rondins pris dans la glace et les travaux ont ralenti. Les tempratures ngatives ont persist depuis le jour de No l et, pendant la priode vise, les parties sud de l'intrieur, comme Kamloops, ont signal des tempratures de -20 C presque tous les jours. En outre, Vancouver, il y a eu de la neige mesurable pendant 14 jours de suite d'o, en dure, la 5eme priode aussi longue des relevs. Mme dans la douce ville de Victoria, le froid a pendant plus de deux semaines maintenu un manteau de neige. Au grand plaisir de bien des gens, les tangs locaux ont gel, d'o d'excellentes sances de patinage en plein air. Mais les nombreux cas de gel de tuyauteries d'eau, mal protges contre des tempratures nocturnes voisines de -7,4 C, n'ont gu re plu aux propritaires fonciers. Et ... les rserves de bois s'puisent vite! Dans les valles cti res, l'expulsion d'air arctique a engendr un ciel bleu et dgag, mais l'air vif et les vents forts ont donn lieu des tempratures dangereusement basses, la froideur du vent tant de -50 C. Dans l'intrieur, ces vents ont dclench des avalanches et caus la fermeture de certains cols. Dans les rgions horticoles des valles, le grand gel a beaucoup prouv les arbres fruitiers. Dans les Prairies, une crte de haute pression de l'Arctique a continu de dominer le temps. En dpit des lg res chutes de neige signales vers la fin de la priode, l'air froid s'est rtabli, d'o des minimums tombant jusqu' -37 C Edmonton. Temps chaud dans le Nord-Ouest Une masse d'air chaud record du Pacifique a pntr dans le Yukon et dans la rgion de la valle du Mackenzie, la temprature montant au-dessus de 0 C. Les habitants de certaines localits craignent que les denres alimentaires entreposes dans les btiments non rfrigrs ne s'abment. Le temps chaud s'est accompagn de forts vents du sud-ouest et d'une poudrerie haute et basse qui ont forc la fermeture de certaines routes. La pluie dtrempe l'Ontario et le Qubec Le 4 janvier, un orage provenant du Sud-Ouest amricain a apport de grosses pluies dans tout le sud et le centre sud de l'Ontario. Cette tempte s'est accompagne de maximums absolus de temprature, Toronto enregistrant jusqu' 12,2 C. Nombre de ruisseaux locaux ont dbord, des prcipitations atteignant 50 mm ne pouvant pntrer dans le sol dj satur. La situation a t particuli rement proccupante dans la rgion de la voie fluviale de Trent-Severn, o l'on avertit les habitants de se prparer affronter des inondations. La tempte est passe au Qubec, o des maximums absolus et des pluies atteignant jusqu' 55 mm dans la valle du Saint-Laurent ont caus une embcle inattendue des glaces, d'o d'htives vacuations. Observation inusuelle d'un iceberg Pendant les ftes de No l, on a observ un iceberg deux pinacles qui drivait en direction est dans l'embouchure de la baie de la Conception (T.-N.) On a estim que la masse de l'iceberg se situait entre un et deux millions de tonnes. Le mois prcdent, on avait effectu deux autres observations de ce genre. Il n'est pas rare d'observer des icebergs la fin du printemps et au dbut de l't, mais les habitants de l'endroit ne se souviennent pas d'avoir vu un iceberg cette priode de l'anne. L'iceberg provient sans doute de la cte nord-ouest du Gro nland. Le temps qu'il fera ... Pour la semaine du 18 janvier, on s'attend des tempratures suprieures la normale dans l'ensemble de l'Ontario et de la moiti ouest du Qubec. Ailleurs, les tempratures seront gnralement infrieures la normale. ---------------------------------------------------------------- WEEKLY NORMAL TEMPERATURES HEBDOMADAIRES NORMALES (C) max. min. Whitehorse A -12.5 -21.2 Iqaluit A -18.7 -26.8 Yellowknife A -21.4 -29.5 Vancouver Int'l A 4.9 -0.6 Victoria Int'l A 5.6 -0.2 Calgary Int'l A -3.1 -14.8 Edmonton Int'l A -8.6 -19.4 Regina A -10.2 -21.1 Saskatoon A -11.7 -21.9 Winnipeg Int'l A -11.9 -21.3 Ottawa Int'l A -5.5 -14.0 Toronto (Pearson Int'l A) -1.0 -8.9 Montral Int'l A -5.0 -13.5 Qubec A -6.6 -15.2 Fredericton A -2.9 -13.0 Saint John A -1.7 -11.3 Halifax (Shearwater) 0.9 -6.7 Charlottetown A -1.9 -9.4 Goose A -10.1 -19.1 St John's A 0.6 -5.4 For the week starting Pour la semaine debutant le: 1992, 12, 28 WEEKLY STATISTICS AT STATIONS ACROSS CANADA STATISTIQUES HEBDOMADAIRES AUX STATIONS CANADIENNES Stations Temperature Pcpn Wind max mean anom max min tot snw dir vel British Columbia Blue River A -21P -9P -13P -42P 0P *** X Cape St James * * * * * *** X Cranbrook A -20 -8 -14 -27 13 34 X Fort Nelson A -31 -10 -13 -44 1 35 X Fort St John A -31 -17 -11 -44 3 28 X Kamloops A -17 -11 -10 -25 15 19 270 52 Penticton A -12 -9 -7 -14 4 9 180 48 Port Hardy A -1 -3 3 -4 2 3 100 78 Prince George A -24 -13 -8 -34 17 44 040 56 Prince Rupert A -7 -6 2 -13 12 7 150 33 Smithers A -25 -15 -11 -35 7 38 X Vancouver Int'l A -4 -7 2 -11 23 14 080 33 Victoria Int'l A -1 -4 5 -5 32 14 060 61 Williams Lake A -23 -13 -9 -33 19 71 X Yukon Territory Komakuk Beach A -13 10 -2 -28 2 18 X Teslin (aut) -32 * -12 -47 0 *** X Watson Lake A -38 -14 -15 -53 3 46 X Whitehorse A -27 -10 -10 -45 5 23 340 61 Northwest Territories Alert -30 1 -15 -40 1 *** X Baker Lake A -26 5 -13 -37 5 69 320 87 Cambridge Bay A -26 7 -15 -36 6 50 270 65 Cape Dyer A -31 -10 -21 -40 1 105 290 48 Clyde A -30 -5 -20 -38 1 49 310 65 Coppermine A -18 8 -7 -33 2 68 330 76 Coral Harbour A -28 -1 -17 -45 3 17 290 59 Eureka -33 3 -21 -43 2 13 X Fort Smith A -26 -3 -11 -39 1 28 320 39 Hall Beach A -30 -1 -18 -41 1 44 110 41 Inuvik A -14 14 -1 -30 2 52 300 48 Iqaluit A -32 -9 -16 -40 5 20 330 56 Mould Bay A -27 6 -14 -38 1 22 X Norman Wells A -21 5 -5 -39 4 26 300 76 Resolute A -30 1 -17 -41 4 16 340 56 Yellowknife A -24 1 -10 -39 1 19 330 65 Alberta Calgary Int'l A -24 -15 -8 -35 5 9 350 41 Cold Lake A -31 -15 -11 -44 5 29 X Edmonton Namao A -26 -14 -10 -37 2 20 X Fort McMurray A -29 -10 -10 -42 2 22 X High Level A -30 -11 -12 -43 1 11 330 39 Jasper * * -8 * * 16 X Lethbridge A -25 -17 -4 -36 6 12 250 39 Medicine Hat A -27 -17 -11 -36 6 10 X Peace River A -32 -16 -10 -46 0 22 340 32 Saskatchewan Cree Lake -29 -10 -11 -42 1 23 340 44 Estevan A -26 -12 -16 -36 8 13 100 44 La Ronge A -28 -9 -12 -40 4 36 X Regina A -28 -12 -15 -39 3 *** 130 48 Saskatoon A -31 -14 -16 -43 9 26 X Swift Current A -28 -16 -14 -40 12 20 270 59 Yorkton A -28 -11 -14 -40 4 32 X Manitoba Brandon A -27 -10 -14 -38 4 29 290 41 Churchill A -26 -1 -13 -36 4 16 310 54 Lynn Lake A -28 -7 -12 -41 4 30 X The Pas A -27 -7 -12 -39 6 22 X Thompson A -29 -6 -14 -41 2 22 X Winnipeg Int'l A -24 -7 -8 -34 4 38 010 44 Ontario Gore Bay A -5 3 4 -20 20 18 180 56 Kapuskasing A -18 -1 0 -28 26 70 180 33 Kenora A -22 -5 -7 -32 15 56 170 35 London A 1 6 11 -10 61 4 290 57 Moosonee -20 -1 -1 -34 4 38 270 35 North Bay A -9 2 4 -25 19 18 210 37 Ottawa Int'l A -8 2 3 -17 19 9 290 37 Petawawa A -9 3 1 -25 12 13 300 39 Pickle Lake -23 -3 -7 -34 5 30 250 35 Red Lake A -24 -5 -8 -32 10 65 X Sudbury A -11 1 2 -26 26 56 030 44 Thunder Bay A -16 -2 -1 -26 18 53 200 32 Timmins A -16 1 0 -28 27 73 310 37 Toronto(Pearson Int'l A) 0 5 8 -9 25 4 310 52 Trenton A -3 4 5 -13 24 8 280 70 Wiarton A -1 4 8 -14 22 7 220 46 Windsor A 2 5 13 -8 44 3 310 39 Qubec Bagotville A -14 0 -4 -27 23 27 270 39 Blanc Sablon A -23P * -12P -31P 3P 25 290 48 Inukjuak A -24 -3 -10 -30 3 16 X Kuujjuaq A -26 -5 -9 -35 5 25 240 57 Kuujjuarapik A -24P -4P -5P -36P 11P 16 130 63 Maniwaki * * 1 * * 24 X Mont Joli A -11 -1 -2 -20 13 21 320 52 Montral Int'l A -8 1 0 -17 14 5 280 43 Natashquan A -20 -10 -5 -30 6 25 210 44 Qubec A -11 0 -3 -24 20 23 070 57 Schefferville A -28 -7 -12 -39 4 44 230 57 Sept-<206>les A -18 -6 -11 -28 11 22 320 41 Sherbrooke A -7 4 1 -22 26 6 270 50 Val-d'Or A -15 1 -1 -25 22 34 160 43 New Brunswick Fredericton A -8 0 1 -20 26 26 300 56 Miscou Island (aut) -8 -2 -2 -15 12 *** Moncton A -9 -2 2 -22 28 27 290 43 Saint John A -7 0 4 -21 20 17 310 69 Nova Scotia Greenwood A -5 -1 4 -18 21 9 290 63 Shearwater A -5 -2 3 -16 30 3 290 57 Sydney A -6 -3 3 -15 41 28 320 54 Yarmouth A -2 0 6 -13 26 5 340 65 Prince Edward Island Charlottetown A -7 -2 1 -17 36 42 310 56 East Point (auto) -5P * 2P -15P 15P *** Newfoundland Cartwright -22 -11 -15 -30 0 *** 210 65 Churchill Falls A -27 -10 -12 -37 2 60 270 41 Gander Int'l A -14 -9 0 -21 8 41 280 85 Goose A -23 -8 -13 -30 1 13 280 44 St John's A -10 -8 2 -16 18 30 290 69 St Lawrence -9 -8 3 -20 19 26 X Wabush Lake A -27 -7 -11 -40 6 41 270 46 Period(e) of/d' observation: 92/12/28-93/01/03 ---------------------------------------------------------------- LEGEND/LEGENDE: mean=temperature weekly mean/moyenne hebdo. (deg. C) anom=temperature mean anomaly/anomalie moyenne (deg. C) max =temperature weekly max./max. hebdomadaire (deg. C) min =temperature weekly mean/min. hebdomadaire (deg. C) tot =precipitation weekly total/cumul. hebdo (mm) snw =snow/neige ground thickness/epaisseure au sol (cm) dir =direction wind max/vent max (deg. wr to N/pr au N) vel =wind speed/vitesse du vent (km/h) Annotations: X =no observation/pas d'observation P =less than 7 days of data/moins de 7 jours de donnees * =missing data/donnee manquante ================================================================