Seasonal Severe Weather Outlook

Monitoring Severe Weather Season

March 1 - May 31, 2021 Total Event Days: 60
Forecast MAM 2021 Total Event Days: 56 - 68


A severe weather event day is determined by the
Practically Perfect Hindcast (PPH) probability.
Event day: PPH >= 10% for tornado or >= 30% for hail
>>> Spatial maps of storm reports and PPH for tornados and hail

March 2021 (14 Event Days)

Sun

Mon

Tue

Wed

Thu

Fri

Sat

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 

April 2021 (18 Event Days)

Sun

Mon

Tue

Wed

Thu

Fri

Sat

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

 

May 2021 (28 Event Days)

Sun

Mon

Tue

Wed

Thu

Fri

Sat

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 


Contact: hui.wang@noaa.gov