Convective Event Report by Steve Pfaff
March 8, 2005
National Weather Service, Wilmington, NC
The Event:
A damaging squall line developed during the morning hours over upstate North Carolina.
Fueled by a very strong jet stream, the storms raced to the east at 60 mph. All of the instances of severe weather resulted from straight-line wind damage, and there were a few reports of small hail. Larger hail was reported in northeastern North Carolina.
Most of the wind reports were between 60 and 70 mph across the Pee Dee and Lumberton areas, Figs. 1-4 and Appendix B. However, the convection strengthened as it moved toward the Cape Fear area wind gusts ranged from 80-100 mph, Figs 5-6 and Appendix B. There was a 77 knot (89 mph) gust reported at KILM as the line moved through. There was damage to one of the buildings on the airport grounds, along with some other structural damage in various parts of the CWA.
WFO Wilmington issued 24 warnings (21 Severe Thunderstorm Warnings and 3 Special Marine Warnings). 17 of 21 Severe Thunderstorm Warnings verified. All three Special Marine Warnings verified as well.
Injuries/Deaths: Wilmington News reported a man was hurt in a tractor-trailer when a gat was made airborne by the wind and crashed into his cab.
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Figure 1. WSR-88D KLTX Base Reflectivity 0.5º 0.9º 1.3º 1.8º, 1431 UTC 3/8/05 |
Figure 2. WSR-88D KLTX Base Velocity 0.5º 0.9º 1.3º 1.8º, 1431 UTC 3/8/05 |
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Figure 3. WSR-88D KLTX Base Reflectivity 0.5º 0.9º 1.3º 1.8º, 1444 UTC 3/8/05 |
Figure 4. WSR-88D KLTX Base Velocity 0.5º 0.9º 1.3º 1.8º, 1444 UTC 3/8/05 |
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Figure 5. WSR-88D KLTX Base Reflectivity 0.5º 0.9º 1.3º 1.8º, 1548 UTC 3/8/05 |
Figure 6. WSR-88D KLTX Base Velocity 0.5º 0.9º 1.3º 1.8º, 1548 UTC 3/8/05 |
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Type of Warning |
Valid Time |
County |
Verify |
Reports |
Leadtime |
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SVR |
827 - 915 AM |
Darlington |
Yes |
Trees down Patrick Hiway in Hartsville 61 mph @ UDG @901 AM |
34 |
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SVR |
827 - 915 AM |
Marlboro |
Yes |
908 AM Trees down on Blenheim Highway - Hiway 38 |
41 |
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SVR |
906 - 945 AM |
Marion |
Yes |
931 AM Trees down in Marion 944 AM 60 mph gust at 501 and 76 |
25 |
|
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SVR |
906 - 945 AM |
Florence |
Yes |
919 AM FLO G58 923 AM Trees down W Pine St in FLO |
13 |
|
|
SVR |
906 - 945 AM |
Dillon |
Yes |
915 AM Trees down Hi 38 Oak Grove |
9 |
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SVR |
906 - 945 AM |
Robeson |
Yes |
930 AM Trees down in Red Springs 936 AM Trees down in Orrum 940 AM Tractor Trailer overturned in LBT |
24 |
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SVR |
939 - 1030 AM |
Horry |
Yes |
950 AM Trees and powerlines in Duford |
11 |
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SVR |
939 - 1030 AM |
Marion |
No |
|
na |
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SVR |
939 - 1030 AM |
Florence |
No |
|
na |
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SVR |
939 - 1030 AM |
Columbus |
No |
|
na |
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SVR |
939 - 1030 AM |
Bladen |
Yes |
950 AM 70 MPH wind gust amat radio |
11 |
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SVR |
939 - 1030 AM |
Robeson |
Yes |
942 AM Trees down 3 on US 301 3 miles south of St Pauls |
3 |
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SVR |
1008 - 1100 AM |
Horry |
Yes |
1020 AM Trees and powerlines in Longs |
12 |
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SVR |
1008 - 1100 AM |
Brunswick |
Yes |
1036 AM Trees down in Leland |
32 |
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SVR |
1008 - 1100 AM |
New Hanover |
Yes |
1049 AM gust 89 @ ILM ASOS |
41 |
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SVR |
1008 - 1100 AM |
Columbus |
|
1045 AM Home destroyed in Evergreen |
37 |
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SVR |
1008 - 1100 AM |
Pender |
Yes |
1040 AM 60 mph gust 3 W Burgaw 1045 AM trees down in Currie |
32 |
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SVR |
1008 - 1100 AM |
Bladen |
Yes |
Trees down in Lisbon 1031 AM |
23 |
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SVR |
1057 - 1115 AM |
Brunswick |
No |
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na |
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SVR |
1057 - 1115 AM |
New Hanover |
Yes |
89 mph wind gust in Myrtle Grove 125 at Figure 8 Island (mesnet) 1100 AM |
3 |
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SVR |
1057 - 1115 AM |
Pender |
Yes |
1103 AM 72 mph wind gust at Surf City |
6 |
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APPENDIX B – Wind Gust Values |
PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE WILMINGTON NC
450 PM EST TUE MAR 8 2005
THIS IS A SUMMARY OF PEAK WIND REPORTS FROM THE HIGH WIND AND
THUNDERSTORM EVENT EARLIER TODAY. MANY THANKS ARE EXTENDED TO OUR
SPOTTERS...MESONET VOLUNTEERS...AMATEUR RADIO OPERATORS...AND TO OUR
MEDIA PARTNERS WPDE-TV AND WECT-TV WHO RELAYED MANY REPORTS.
*********************MAXIMUM WIND SPEED*********************
LOCATION MAXIMUM WIND TIME/DATE COMMENTS
SPEED OF
(MPH) MEASUREMENT
NORTH CAROLINA
...BRUNSWICK COUNTY...
SOUTHPORT 51 1115 AM 3/8 SPOTTER NWS MESONET OBSERVATION
OAK ISLAND 49 1115 AM 3/8 SPOTTER NWS MESONET OBSERVATION
...COLUMBUS COUNTY...
WHITEVILLE 49 1115 AM 3/8 SPOTTER NWS MESONET OBSERVATION
...NEW HANOVER COUNTY...
MYRTLE GROVE 89 1100 AM 3/8 SPOTTER NWS MESONET OBSERVATION
WILMINGTON 89 1049 AM 3/8 SPOTTER NWS ASOS OBSERVATION
WRIGHTSVILLE BEACH 76 1050 PM 3/8 SPOTTER SUNSPREE RESORT - WECT
WILMINGTON 51 1045 AM 3/8 SPOTTER UNCW MAR SCI CNTR - WECT
WILMINGTON 49 1045 AM 3/8 SPOTTER WECT STUDIOS
...PENDER COUNTY...
SURF CITY 72 1103 AM 3/8 SPOTTER MESONET OBSERVATION
BURGAW 60 940 AM 3/8 SPOTTER TRAINED SPOTTER REPORT
...ROBESON COUNTY...
LUMBERTON 51 944 PM 3/8 SPOTTER NWS ASOS OBSERVATION
SOUTH CAROLINA
...DARLINGTON COUNTY...
DARLINGTON 61 901 AM 3/8 SPOTTER NWS AWOS OBSERVATION
...FLORENCE COUNTY...
FLORENCE 58 919 AM 3/8 SPOTTER NWS ASOS OBSERVATION
TIMMONSVILLE 52 915 AM 3/8 SPOTTER WPDE RELAYED REPORT
JOHNSONVILLE 47 940 AM 3/8 SPOTTER WPDE RELAYED REPORT
LAKE CITY 44 925 AM 3/8 SPOTTER WPDE RELAYED REPORT
EFFINGHAM 43 925 AM 3/8 SPOTTER WPDE RELAYED REPORT
...GEORGETOWN COUNTY...
MURRELLS INLET 49 1015 AM 3/8 SPOTTER WPDE RELAYED REPORT
PAWLEYS ISLAND 49 1015 AM 3/8 SPOTTER WPDE RELAYED REPORT
GEORGETOWN 46 1015 AM 3/8 SPOTTER WPDE RELAYED REPORT
...HORRY COUNTY...
MYRTLE BEACH 53 1015 AM 3/8 SPOTTER WPDE RELAYED REPORT
CONWAY 47 1000 AM 3/8 SPOTTER WPDE RELAYED REPORT
NORTH MYRTLE BEACH 47 1015 AM 3/8 SPOTTER WPDE RELAYED REPORT
LITTLE RIVER 44 1015 AM 3/8 SPOTTER WPDE RELAYED REPORT
SOCASTEE 44 1000 AM 3/8 SPOTTER WPDE RELAYED REPORT
CONWAY 41 1130 AM 3/8 SPOTTER NWS MESONET OBSERVATION
NORTH MYRTLE BEACH 36 1025 AM 3/8 SPOTTER NWS ASOS OBSERVATION
...MARION COUNTY...
MARION 60 944 AM 3/8 SPOTTER ESTIMATED BY SPOTTER
...WILLIAMSBURG COUNTY...
ANDREWS 43 945 AM 3/8 SPOTTER WPDE RELAYED REPORT
$$
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