20-21 April 1991 (Figure 32) 
70. Developing off Cape Hatteras, NC on 20 April, this intense coastal 
storm quickly deepened and moved up the coast, being located off the Maryland 
coast early on 21 April and over Canada by 22 April. Maximum wind speeds near 
17 m/s (from the north-northeast) were recorded at 1600 EST on 20 April, with 
the maximum H,. (at Gage 625) of 2.81 m (T, = 8.83 sec) occurring several 
hours later at 2020 EST. This was followed the next morning at 0208 EST by 
the minimum atmospheric pressure of 998.4 mb. Total precipitation at the FRF 
from this system was 42 mn. 
10405 Atmospheric Pressure, mb Gage 616 
1030-4 
10204 
10104 
10004 
Wind Speed, m/sec Gage 932 
a) : 
360- Wind Direction, Deg True N 
270+ 
1804 
904 
0+— ea SS T 
1605 Siave Direction. Deg True N Sage 3513 
1004 
—— SSS 
40 
35 wave Height, +,,, m Sage 625 
20-7 wave Periog, > 
154 
ee 
s4 
sec Sage 625 
a Kas T ce Uo eT UT TT Te Te Tolono foo Ce 
oe #iater Level from NGVD, m Sage 1 
Ne aS 
APRIL, 1991 
Figure 32. Data for 20-21 April 1991 storm 
65 
