بازار خرید و فروش انواع پارچه | پارچه سرا قیمت، خرید، فروش انواع پارچه
۲) Morning and afternoon transport winds of 10 kts or less A hurricane warning is issued when sustained winds of 64 kt (74 mph) or more related to a tropical cyclone are expected in 36 hours or less. These winds can be accompanied by storm surges, coastal flooding and/or river flooding. A hurricane warning may remain in effect if dangerously high waters or a combination of dangerously high waters and exceptionally high waves persists, even though winds may be less than the strength of a hurricane. If the event is expected to affect the Baltimore/Washington metropolitan areas during peak hours (4-9 a.m. or 2-7 p.m. weekdays), one-inch projected snow totals will require a winter weather warning. The snow and sleet criteria for a winter weather consultation for the five westernmost counties (Allegany, Mineral, Grant, Pendleton and Highland) are higher (3 to 5 inches). An airborne ash cloud that results in persistent deposits on the surface. Ash fall can come directly from a volcanic eruption or from the resuspension (by the wind) of a significant amount of reliquia. When a WARNING is issued by the National Weather Service, it means that severe weather has been detected by radar, observed by trained storm watchers (SKYWARNTM) or predicted for a specific area. People on the way to the storm are expected to take steps to protect lives and property when the term WARNING is heard.
SEVERE THUNDERSTORMS or TORNADO WATCH Severe thunderstorms with large hail, destructive winds and/or tornadoes are possible, but the exact time and location of storm development is still uncertain. A clock means being prepared for storms. A winter storm watch is issued when there is a significant and dangerous risk of winter weather within 48 hours. This does not mean that significant and dangerous winter conditions will occur. it simply means that it is possible. A tropical storm warning is issued when sustained winds of 34 to 63 kt (39 to 73 mph) or more related to a tropical cyclone are expected in 36 hours or less. These winds can be accompanied by storm surges, coastal flooding and/or river flooding. A product that is used to transmit information about weather or hydrological events in the coming hours. A wind warning is issued when persistent winds of 30 to 39 mph and/or gusts of 45 to 57 mph are expected in the valleys.
(not issued for mountain locations) 2) Snow bubbles that reduce visibility to 1/4 of a mile or less with winds of less than 35 mph Provides tracking information on extreme weather conditions (severe thunderstorms or tornadoes) that have occurred or are currently occurring. Severe thunderstorm risk Terminology (used in dangerous weather forecasts) LOW RISK: Severe thunderstorms are expected to be rare or isolated. MODERATE RISK: Severe thunderstorms are expected to be more organized, more numerous or more widespread. HIGH RISK: Severe thunderstorms with the potential for tornadoes, damaging thunderstorms and/or large hail are expected A fire weather station is issued to alert firefighters and firefighters to potentially dangerous fire weather conditions within the next 24 to 36 hours. They are issued when the following three criteria are met: FLASH FLOOD WARNING A life-threatening flood is imminent or occurring; it is either detected by weather radar, indicated by flow levels or reported by storm watchers. A flash flood is a flood that occurs very quickly; it is caused by heavy rains over a short period of time or by the rupture of a dam. A warning means leaving low-lying or flood-prone areas. Here are the weather terms commonly used by the National Weather Service. All temperatures are in Fahrenheit. 3) Persistent or frequent guest wind of 25 to 34 mph, accompanied by falls and blowing snow, which sometimes reduces visibility to 1/4 mile or less for 3 hours or more. A wind chill recommendation is issued when wind chills of -5F to -19F are expected east of the Blue Ridge Mountains and when wind chills from -10 to -24F are expected along and west of the Blue Ridge Mountains and in Frederick and Carroll counties in Maryland.
۱) For valley sites: sustained winds of 40 mph or more and/or gusts of 58 mph or more The following terms are used to alert the public to weather situations that are not necessarily associated with precipitation, but should be highlighted. Significant and hazardous winter conditions are defined as a combination of: 1) 5 inches or more of snow/sleet in a 12-hour period or 7 inches or more of snow/sleet in a 24-hour period AND/OR 2) Sufficient ice build-up to cause damage to trees or power lines. AND/OR 3) a potentially lethal or harmful combination of snow and/or ice accumulation with wind. 4) Persistent winds or frequent gusts of 35 mph or more with visibility equal to or less than 1/4 of a mile in snow or snowdrifts for 3 hours or more (Blizzard) A blizzard warning means that the following conditions will occur or are expected within the next 12 to 18 hours. 1) Snow and/or snow that reduces visibility to 1/4 mile or less for 3 hours or more AND 2) Persistent winds of 35 mph or more or frequent gusts up to 35 mph or more. There are no temperature requirements that must be met to achieve blizzard conditions. TORNADO WARNING A tornado is imminent or occurring; it is either detected by weather radar or reported by storm watchers. A warning means seeking protection. It is very important that the difference between a WATCH or a WARNING is understood.
The term WATCH implies that people should pay attention to the possibility of severe weather and have a plan of action in case a storm threatens. 5) Wind chill forecast or observed at or below -20°F with a wind of 10 mph or more, in all valley and plateau locations with population centers. Situations that cause significant inconvenience and do not meet the warning criteria. Persistent wind or frequent gusts of 25 to 34 mph, accompanied by falls and blowing snow, which sometimes reduces visibility to less than 1 mile for three hours or more. Lack of caution can lead to life-threatening situations. A synoptic storm that creates a combination of winter weather conditions that presents a hazard and does not meet the warning criteria. In this case, the snowfall does not have to meet the criteria for snow-related stress. 1) Sustained winds of 40 mph or more for an hour or more The following terms warn the public of more severe winter weather situations that can cause impossible travel conditions and pose a threat to life and property.
۲) Wind gusts of 58 mph or more for any duration. Issued for hazards that have not yet reached warning or warning status or that do not have their own specific code, such as.B. widespread funnel clouds. Often used when radar indicates that a strong thunderstorm produces hail or strong winds whose strength does not meet the criteria for designation of a severe thunderstorm. 2) A current or expected non-hazardous public interest event of general interest that can normally be covered by a single message (e.B. unusual atmospheric phenomena such as bloodhounds, halos, northern lights, lenticular clouds and stories over a long-term dry/cold/wet/hot period). 3) Information and public education activities, such as. B storm safety rules, awareness activities, rain drills, etc. 4) information about service changes, service restrictions, interruptions due to reduced or failing power supply or equipment failures, or special information that clarifies the interpretation of NWS data.
For example, this product can be used to inform users of radar device failures or special information that clarifies the interpretation of radar data from an unusual source that can be confused with precipitation (such as tares drops, smoke plumes, etc.) that produce echoes on the radar screen. A wind chill watch is emitted when wind chills at -10°F or less with a wind of 10 mph or more are POSSIBLE. A warning of short-term potentially dangerous weather conditions (up to 2 hours) affecting areas of an FCF that are not sufficiently covered by existing marine warnings and that cause one or more of the following causes: 1) Dissemination of observations and accumulation reports during and after a weather event. ==References=====External links===* Official website Winter weather conditions that cause significant inconvenience are defined as a combination of: Hurricane monitoring is issued when a tropical cyclone with winds of 64 kt (74 mph) or more poses a potential threat, usually within 48 hours. These winds can be accompanied by storm surges, coastal flooding and/or river flooding. SEVERE THUNDERSTORM WARNING A severe thunderstorm is imminent or occurring; it is either detected by weather radar or reported by storm watchers. A severe thunderstorm is a thunderstorm that produces winds of 58 mph or more and/or hail 1 inch or more in diameter. A warning means seeking protection.
۲) Persistent winds of 35 mph or more or frequent gusts up to 35 mph or more. Significant and hazardous winter conditions are defined as a combination of: An extreme wind warning is issued for surface winds of 100 knots (115 mph) or higher associated with non-convective, downhill, derecho (NOT tornado)- or sustained hurricane winds that are expected to occur within an hour. Hazardous weather perspectives describe potentially hazardous weather and hydrological information that is relevant for days 1 to 7. A significant and potentially harmful accumulation of ice. Usually, a coating of at least 1/4 inch, but can go up to 1/2 inch if the winches are less than 15 mph. 1) Persistent convective sea winds (showers/thunderstorms) or associated gusts of 34 knots or more A winter storm warning is issued when a significant combination of dangerous winter weather conditions occurs or is imminent. A product issued by local NWS offices to inform users of reports of severe and/or significant weather events Expressed as a percentage Of PoP equivalent area qualifiers Long-term event of widespread or localized doom dust that reduces visibility to one mile or less but more than 1/4 mile.. .
