1. High Shear Low CAPE Severe Wx: March 4-5, 2008
278 total tornado/wind reports

2. Tornado and Wind Events Examined
7 tornadoes (8 counties) 2123Z/4th-0150Z/5th
10 “sig” wind events (22 reports) 2305Z/4th-0525Z/5th

3. Environmental Conditions
300 mb

4. Environmental Conditions
850 mb

5. Environmental Conditions
GSO

6. Environmental Conditions
0-6 km shear ~60 kts
0-1 km shear ~45 kts

7. NWS Performance - Tornado
Warnings:
Events:
7 Total
4 Fully warned
1 Partially warned
2 Unwarned
30 Issued
5 Verified
25 Not verified
Scores:
Lead time (min):
GPRA:72/70/13
POD vs. GPRA
FAR vs. GPRA
CSI
Mean vs. GPRA - 11
Initial

8. Highlights
Tornado occurrences were associated with mini-supercells, most occurred earlier in the event and in close proximity to a preceding diabatically-induced frontal zone.
Damaging wind events were mostly associated with QLCS/ line segments, though a couple were mini-supercell/RFD-related.
A broad region of SHERB encompassed entire region of TOR/Wind reports, and local maxima of were often located INVOF tornado occurrences.
SigTor values typically between 1-2.

9. False Alarms Examined
RAH.TO.W Begin Time:03/05/ :00 Z - End Time:03/05/ :45 Z
This storm was a mini-supercell located in central Granville County at the tail end of a broken convective line. The cell appeared to originally be a part of the line, but by warning issuance, the supercell had become separated from the line as a weak echo slot intruded upon the downwind side of the supercell.

10. False Alarms Examined
RNK.TO.W Begin Time:03/05/ :22 Z - End Time:03/05/ :45 Z
The storm which prompted this warning was a line segment embedded within regions of generally stratiform precipitation ahead of a developing QLCS.

11. False Alarms Examined
AKQ.TO.W Begin Time:03/05/ :57 Z - End Time:03/05/ :30 Z
The storm prompting this warning was a mini-supercell within a broad area of stratiform precipitation and embedded convection.

12. False Alarms Examined MHX.TO.W.0007.2008
Begin Time:03/05/ :12 Z - End Time:03/05/ :45 Z
This storm was a mini-supercell on the northern end of a QLCS which moved through far eastern NC during the early morning of March 5, 2008.