Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
Versions:
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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
983 ACUS11 KWNS 172358 SWOMCD SPC MCD 172357 NJZ000-MDZ000-DEZ000-VAZ000-NCZ000-180200- Mesoscale Discussion 1675 NWS Storm Prediction Center Norman OK 0657 PM CDT Wed Jul 17 2024 Areas affected...Portions of the Mid and South-Atlantic Concerning...Severe Thunderstorm Watch 553... Valid 172357Z - 180200Z The severe weather threat for Severe Thunderstorm Watch 553 continues. SUMMARY...The threat of damaging winds will continue across portions of the Mid and South-Atlantic for 2-3 more hours. DISCUSSION...Two linear clusters of thunderstorms continue to progress eastward this evening across eastern VA and MD. The most significant of these two was beginning to dive southward over far southeastern VA into far northern NC, where at least one bowing segment has been observed. This former area is characterized by a low-level moisture axis extending SSW to NNE, where estimated MLCAPE is still near 2500 J/kg. Although deep layer effective shear remains marginal over this region, slowly increasing moist southerly low-level flow near the aforementioned instability axis should continue to sustain updraft development along the convergence zone of this small linear complex through the evening hours. However, recent radar imagery indicates the outflow near the northeastern flank of this cluster is now well ahead of it, suggesting a weakening trend may be observed there soon. ..Barnes.. 07/17/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...PHI...AKQ...LWX...RAH...RNK... LAT...LON 39577423 39637618 39067668 38587711 37897748 37587796 37427854 37027904 36547929 36337944 36237914 36137845 36157788 36237728 36257719 37587585 39577423