The Public Storm Warning Signal #1 is a signal that lets you know a storm is on its way. It will alert you of a possible storm and allow you to prepare for it. The warning will vary depending on where the storm is forming. In this article, you’ll learn about the first stage of a tropical cyclone, its impacts on public institutions and schools, and how lead times change according to the storm’s path.
First stage of a tropical cyclone
A Public Storm Warning Signal (PSWS) is a warning from a national weather service about a tropical cyclone. It will alert you to severe weather, including high winds and heavy rains, which can cause extensive damage. The PSWS warns you to take shelter and secure loose outdoor items. It also warns you of the risk of flooding.
A Public Storm Warning Signal (PSWS) is a warning message about a storm – primarily concerning climatic conditions – that will strike a specific area within 36 hours. It depicts the wind speed and intensity and the estimated rainfall. The purpose of this warning is to alert the public to the upcoming storm and protect lives.
Impact on schools
Schools should pay attention to the radio or television announcements when a tropical cyclone is brewing. If schools are closed, students will be kept in their safe and secure places until proper arrangements are made. Kindergartens and schools for physically and mentally handicapped students will close as well. Otherwise, classes can resume as normal as long as they are not affected by the storm.
The first public storm warning signal is issued 36 hours before a storm is expected to make landfall. These warning signals help people prepare for the storm by informing them of the expected wind speeds and rainfall. This allows people to safely leave or travel to higher ground or take long-term shelter.
Impact on public institutions
When a storm threatens the region, the National Weather Service (PAGASA) issues a Public Storm Warning Signal. The numbers on the signal indicate changes in the characteristics of a cyclone. For example, PSWS number one means that winds of thirty to sixty kilometers per hour will be hitting that area within 36 hours. As a result, residents of the area should prepare themselves for heavy rain and take shelter in a safe location. Depending on the path of the cyclone, these warning signals can change the amount of time that the public has to prepare for the storm.
Public Storm Warning Signal #1 impacts public institutions in several ways. First, it affects the way emergency management is done. Emergency managers must understand the risks associated with a particular storm, and then budget appropriately for the necessary resources. These resources should include internal and external resources, such as local emergency services and law enforcement. Additionally, they must plan for multiple scenarios and take into account different threats.
Changes in lead time based on storm’s path
The forecasting community strives to provide at least 13 minutes of lead time for tornado warnings. But since 2011, the average lead time has remained relatively stable, fluctuating between eight and 11 minutes. Ten years ago, forecasters began waiting longer before issuing warnings for tornadoes when their equipment indicated that a tornado was likely.
In our study, we found that the POD of tornado warnings increased by about 1.5 min when the storm’s path exceeded 100 km from the radar. This was the case for both positive and negative lead time. In addition, we found that the average lead time for all storm categories increased with increasing distances from the radar and the sample size.
Efficacy of PSWS No. 1
The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) issued a bulletin stating that Odette had shifted from a severe storm to a typhoon, and its maximum sustained winds have reached 120 kmph. The cyclone is expected to strengthen again, intensifying its winds further on December 16 evening. During this time, people are urged to pay attention to severe weather bulletins issued by the government’s disaster preparedness units.
During a typhoon, the No. 1 signal warns people to prepare for a tropical cyclone, with an advisory period of 12 hours. However, the warning period can be shorter for high-lying areas or those exposed to strong winds. Further, the intensity of the tropical cyclone can reduce the warning period. At this time, it is important to secure loose objects and plan activities in advance.