Alert archive / North Carolina / Tornado Watches in 2010
Tornado Watch 38
The Storm Prediction Center issued this tornado watch at Mar 28, 2010, 7:37 PM EDT for 19 counties in North Carolina. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2010, 7:37 PM EDT (23:37 UTC)
- Expired
- Mar 28, 2010, 11:20 PM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Alamance County, NC, Anson County, NC, Caswell County, NC, Chatham County, NC, Davidson County, NC, Durham County, NC, Forsyth County, NC, Granville County, NC, Guilford County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Rockingham County, NC, Stanly County, NC, Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 103 km from the middle of the area, began a volume at 23:38 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 7:41 PM EDT | Tornado Warning | RNK | Caswell, Rockingham | 64 min |
| Mar 28, 7:48 PM EDT | Tornado Warning | RAH | Davidson | 27 min |
| Mar 28, 8:07 PM EDT | Flash Flood Warning | RNK | Rockingham | 6 hr |
| Mar 28, 8:12 PM EDT | Tornado Warning | RAH | Davidson, Forsyth, Guilford, Randolph | 48 min |
| Mar 28, 8:45 PM EDT | Tornado Warning | RAH | Davidson, Forsyth | 29 min |
| Mar 28, 8:48 PM EDT | Tornado Warning | RNK | Caswell, Rockingham | 57 min |
| Mar 28, 8:52 PM EDT | Tornado Warning | RAH | Person | 23 min |
| Mar 28, 8:57 PM EDT | Tornado Warning | RAH | Guilford | 37 min |
| Mar 28, 9:31 PM EDT | Severe Thunderstorm Warning | RAH | Davidson, Montgomery, Randolph, Stanly | 44 min |
| Mar 28, 9:34 PM EDT | Flash Flood Warning | RAH | Guilford | 3 hr |
| Mar 28, 9:39 PM EDT | Tornado Warning | RAH | Person | 36 min |
| Mar 28, 9:49 PM EDT | Flash Flood Warning | RNK | Caswell | 6 hr |
| Mar 28, 10:21 PM EDT | Severe Thunderstorm Warning | RAH | Davidson, Montgomery, Randolph, Stanly | 54 min |
| Mar 28, 10:26 PM EDT | Tornado Warning | RAH | Alamance, Guilford | 34 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.6 hours before the alert went out and 36 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 595 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 289 m²/s²
- 0-3 km storm-relative helicity
- 318 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 3:21 PM EDT | Mesoscale Discussion | SPC | Buncombe, Burke, Clay, Cleveland, Gaston, Haywood and 8 more | 114 min |
| Mar 28, 3:47 PM EDT | Tornado Watch | SPC | Cabarrus, Catawba, Cleveland, Davie, Gaston, Iredell and 6 more | 7 hr |
| Mar 28, 7:19 PM EDT | Mesoscale Discussion | SPC | Anson, Cabarrus, Catawba, Chatham, Cleveland, Davidson and 19 more | 86 min |
Nearby
Tornado Watches in North Carolina, 2010Every tornado watch in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.