National Weather Service United States Department of Commerce

Severe Thunderstorms and Excessive Rainfall in the Eastern U.S. Tuesday; Hot Weather for Southern California

Severe thunderstorms are likely across portions of the Mid-South, Tennessee Valley, and lower Ohio River Valley Tuesday, including damaging winds and tornadoes, a few of which could be strong. Heavy to excessive rainfall, which may lead to flooding, is expected over the lower Ohio Valley Tuesday. An extended period of hot weather is forecast for parts of coastal southern California this week. Read More >

TAM MCARTHUR RIM
 
 DATE                                        TUESDAY 05/20/25                        WEDNESDAY 05/21/25
 TIME (LT)          17   20   23   02   05   08   11   14   17   20   23   02   05   08   11   14   17
                    5P   8P   11P  2A   5A   8A   11A  2P   5P   8P   11P  2A   5A   8A   11A  2P   5P   
 
 CLOUD COVER        SC   BK   SC   BK   BK   SC   SC   FW   FW   FW   FW   FW   SC   FW   SC   BK   BK
 CLOUD COVER (%)    45   60   50   55   60   45   35   15   15   25   15   25   30   20   30   60   70
 TEMPERATURE        36   32   29   26   26   27   32   37   37   32   27   26   25   31   43   48   48
 MIN/MAX TEMP                           25                  39                  24                  49
 WIND DIR            W    W    W    W    W    W    W    W    W    W    W    W   SW   SE   SE    N    N
 WIND (MPH)         18   17   12   10    8    6    6    8    9    6    3    2    2    2    3    4    9
 WIND GUST (MPH)                                                                                      
 PRECIP PROB (%)    20   10   10   30   20   10    5    5    5    5    0    0    0    0    5    5   30
 PRECIP TYPE         S              S    S                                                           S
 6 HOUR QPF                 0.02      0.01      0.00      0.00      0.00      0.00      0.00      0.00
 6 HOUR SNOW                 0.0       0.1       0.0       0.0       0.0       0.0       0.0       0.0
 6 HOUR ICE                 0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
 SNOW LEVEL (KFT)  6.8  6.0  5.2  4.7  4.3  4.7  5.5  6.0  6.0  5.4  4.9  4.4  4.3  5.0  6.5  7.2  7.9
 
 

--- PRECIP TYPE CODES --- 
CODE   TYPE
 T     THUNDERSTORMS
 R     RAIN
 S     SNOW
 I     SLEET
 Z     FREEZING RAIN