Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Raleigh, NC

October 25, 2021Forsyth County, Guilford County, North Carolina

NWS Raleigh, NC issued this special weather statement at Oct 25, 2021, 6:35 PM EDT for Forsyth County, Guilford County, North Carolina. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 25, 2021, 6:35 PM EDT (22:35 UTC)
Expired: Oct 25, 2021, 7:30 PM EDT
In force: 55 min
Issued by: NWS Raleigh, NC
Hail: 0.00 in
Wind: 40

Counties Forsyth County, NC, Guilford County, NC

The radar

The Roanoke radar (KFCX), 107 km from the middle of the area, began a volume at 22:36 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.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.6 hours before the alert went out and 41 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 98 J/kg
Mixed-layer CIN: -215 J/kg
Mixed-layer LCL: 837 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: -45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Raleigh, NC wrote its last area forecast discussion before this special weather statement went out at Oct 25, 3:40 PM EDT, 2 hours 55 minutes earlier.

Area forecast discussion, Oct 25, 3:40 PM EDT, 2 hours 55 minutes before

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Hazardous weather outlook, Oct 25, 12:58 PM EDT, 5 hours 37 minutes before

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In the hours before

Special weather statement, Oct 25, 6:35 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Raleigh NC
635 PM EDT Mon Oct 25 2021

NCZ021-022-038-252330-
Guilford NC-Forsyth NC-Davidson NC-
635 PM EDT Mon Oct 25 2021

...A strong thunderstorm will impact portions of Forsyth, northern
Davidson and Guilford Counties through 730 PM EDT...

At 634 PM EDT, Doppler radar was tracking a strong thunderstorm near
Winston-Salem, moving east at 45 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Greensboro, Winston-Salem, High Point, Kernersville, Clemmons,
Bermuda Run, McLeansville, Lewisville, Summerfield and Stokesdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
central North Carolina.

&&

LAT...LON 3611 8051 3612 8046 3614 8044 3621 8045
      3622 8043 3624 8045 3626 8045 3624 7955
      3607 7960 3587 8039 3588 8042 3589 8041
      3589 8037 3596 8038 3599 8042 3601 8042
      3606 8046 3604 8049 3606 8051
TIME...MOT...LOC 2234Z 253DEG 39KT 3614 8031

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Kren

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 25, 8:45 AM EDT	Special Weather Statement	RAH	Moore	45 min
Oct 25, 10:27 AM EDT	Special Weather Statement	RAH	Wake	48 min
Oct 25, 6:57 PM EDT	Severe Thunderstorm Warning	RAH	Forsyth, Guilford	48 min
Oct 25, 7:05 PM EDT	Tornado Warning	RAH	Guilford	25 min
Oct 25, 7:27 PM EDT	Severe Thunderstorm Warning	RAH	Davidson, Forsyth, Guilford, Randolph	48 min
Oct 25, 7:42 PM EDT	Severe Thunderstorm Warning	RAH	Alamance	33 min

Nearby

Special Weather Statements in North Carolina, 2021 Every special weather statement in 2021

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.