The Southern Indiana Weather Spotter's Reference
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Severe Weather Jumpstart
Starting Out The Day
Weather Summary:
WSFO Paducah
Want to know what has happened through the night? Here is where to find out! This product is issued twice daily, around 4:00 AM and 5:00 PM by WSFO Louisville and Paducah. It is a brief summary of the weather that has occurred statewide since the last issuance and typically there is a generalized forecast for the state at the end.
Convective Outlook:
Storm Prediction Center
Just getting your morning cup of coffee? If so, here is a good place to start the day. The SPC in Norman, Oklahoma works through the night and issues this product beginning at 06Z (1 AM EST) to outline areas in the continental United States where severe thunderstorms may develop over the next 6 to 30 hours. Your local forecast office pays close attention to the SPC's guidance. This report is issued again at 13Z & 16Z (8 AM & 11 AM EST - the morning updates), 20Z (3:00 PM EST - the afternoon update), and the 01Z (8 PM EST - the evening update).
Hazardous Weather Outlook:
WSFO Paducah
WSFO Louisville
WSFO Indianapolis
Wonder what is on the horizon in terms of locally severe weather and whether spotter activation will be needed? Then check out the Hazardous Weather Outlook which is issued by your local forecast office at least once daily by around 5 AM EST/EDT and is updated as needed. The HWO highlights any expected hazardous weather conditions over the next seven days!
Local Discussion:
WSFO Louisville
WSFO Indianapolis
WSFO Paducah
When severe weather is headed your way, the forecaster at your local WSFO begins the day be checking computer model output statistics (MOS) to see what they predict. He also takes a look at the SPC's Day One Convective. He then uses his expertise to generate the local forecast. What is his thinking when he does this? Look in the Local Discussion for your area to find out! It provides scientific insight into the forecaster's thought process and is the basis and reasoning for the forecasts issued by that office.
Thunderstorms Probability:
The Weather Channel
The Storm Prediction Center
Here are very informative US maps which depicts areas of the Country which may experience either Strong or Severe Thunderstorms. Look here to see whether your area may be affected.
Weather Discussion:
AccuWx Blogs
The Weather Channel o
Get an independent point of view on how the day's weather will unfold and where the hot spots will be!
As The Day Progresses.....
Mesoscale Discussion:
Storm Prediction Center
When conditions actually begin to shape up for severe weather, the SPC often issues a Mesoscale Discussion (MCD) statement ANYWHERE FROM ROUGHLY HALF AN HOUR TO SEVERAL HOURS BEFORE ISSUING A WEATHER WATCH. The MCD basically describes what is currently happening, what is expected in the next few hours, and when/where the SPC plans to issue the watch (if any). MCDs can help you get A LITTLE EXTRA LEAD TIME on the weather and allow you to begin gearing up operations before a watch is issued.
Public Severe Outlook:
Storm Prediction Center
This product is only issued by the SPC on an as needed basis. When it appears, LOOK OUT! Something significant, weather wise, is probably going to transpire later in the day. The report is very useful in noting just what that might be as well as pointing our the affected areas. CHECK THE DATE ON THIS ISSUANCE! The last one issued stays put till a new one is released so you might be looking at old data.
Weather Watches:
Storm Prediction Center
When conditions are favorable for severe thunderstorms and tornadoes to develop, the SPC usually issues a severe thunderstorm watch or a tornado watch. When the SPC feels confident about the possibility of severe weather in a specific area, they try to issue a watch at least 30 minutes prior the onset of severe weather.