Alert archive / North Carolina / Areal Flood Warnings in 2017

Areal Flood Warning 5, NWS Blacksburg, VA

April 24, 2017Caswell County, Rockingham County, Stokes County, North Carolina

NWS Blacksburg, VA issued this areal flood warning at Apr 24, 2017, 6:43 PM EDT for Caswell County, Rockingham County, Stokes County, North Carolina. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 24, 2017, 6:43 PM EDT (22:43 UTC)
Expired: Apr 25, 2017, 6:30 AM EDT
In force: 12 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

Counties Caswell County, NC, Rockingham County, NC, Stokes County, NC

The radar

The Roanoke radar (KFCX), 82 km from the middle of the area, began a volume at 22:46 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

Newport, NC (KMHX), launched 12:00Z, 10.7 hours before the alert went out and 318 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: 340 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 604 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 175 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Blacksburg, VA wrote its last area forecast discussion before this areal flood warning went out at Apr 24, 4:14 PM EDT, 2 hours 29 minutes earlier.

Area forecast discussion, Apr 24, 4:14 PM EDT, 2 hours 29 minutes before

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Hazardous weather outlook, Apr 24, 2:50 PM EDT, 3 hours 53 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
250 PM EDT Mon Apr 24 2017

NCZ003>006-019-020-VAZ022>024-032>035-043>046-058-059-251900-
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Roanoke-Botetourt-
Rockbridge-Patrick-Franklin-Bedford-Amherst-Henry-Pittsylvania-
Campbell-Appomattox-Halifax-Charlotte-
250 PM EDT Mon Apr 24 2017

...FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...

This Hazardous Weather Outlook is for north central North Carolina,
northwest North Carolina, central Virginia, south central Virginia,
southwest Virginia and west central Virginia.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

Flooding may continue along some of the main stem rivers Tuesday
and Wednesday, otherwise no hazardous weather is expected at this
time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001-002-018-VAZ007-009>018-WVZ042-251900-
Ashe-Alleghany NC-Watauga-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-
Montgomery-Grayson-Carroll-Floyd-Craig-Mercer-
250 PM EDT Mon Apr 24 2017

...FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for northwest North Carolina,
southwest Virginia and southeast West Virginia.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Flooding may continue along some of the main stem rivers Tuesday
and Wednesday, otherwise no hazardous weather is expected at this
time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

VAZ019-020-047-WVZ043-044-507-508-251900-
Alleghany VA-Bath-Buckingham-Summers-Monroe-Eastern Greenbrier-
Western Greenbrier-
250 PM EDT Mon Apr 24 2017

This Hazardous Weather Outlook is for central Virginia, west
central Virginia and southeast West Virginia.

.DAY ONE...This afternoon and tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Apr 24, 2:38 PM EDT, 4 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
238 PM EDT MON APR 24 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0236 PM     HEAVY RAIN       10 NNE STUART           36.77N 80.21W
04/24/2017  E4.35 INCH       PATRICK            VA   TRAINED SPOTTER

            RAIN MEASURED SINCE MIDNIGHT MONDAY MORNING.

&&

JMORROW

Local storm report, Apr 24, 2:45 PM EDT, 3 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
245 PM EDT MON APR 24 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0244 PM     HEAVY RAIN       4 E HALIFAX             36.77N 78.86W
04/24/2017  M2.80 INCH       HALIFAX            VA   911 CALL CENTER

            BROADCAST MEDIA RELAYS A STORM TOTAL RAINFALL REPORT OF
            2.8 INCHES OUT OF HALIFAX COUNTY, VIRGINIA

&&

JMORROW

Local storm report, Apr 24, 3:43 PM EDT, 3 hours before

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The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 8:25 PM EDT	Flash Flood Warning	RNK	Bland, Smyth, Tazewell, Wythe	10 hr
Apr 23, 11:25 PM EDT	Areal Flood Advisory	RNK	Carroll, Grayson, Wythe	12 hr
Apr 24, 1:02 AM EDT	River Flood Warning	RNK	Pittsylvania, City of Danville	3 days
Apr 24, 1:02 AM EDT	River Flood Warning	RNK	Halifax	4 days
Apr 24, 1:02 AM EDT	River Flood Warning	RNK	Halifax	5 days
Apr 24, 6:18 AM EDT	Areal Flood Advisory	RNK	Bland, Grayson, Smyth, Tazewell, Wythe	6 hr
Apr 24, 6:31 AM EDT	Areal Flood Advisory	RNK	Floyd, Giles, Montgomery, Pulaski, City of Radford	12 hr
Apr 24, 6:42 AM EDT	Areal Flood Advisory	RNK	Patrick	6 hr
Apr 24, 9:40 AM EDT	Areal Flood Advisory	RNK	Roanoke, City of Roanoke, City of Salem	12 hr
Apr 24, 10:37 AM EDT	River Flood Warning	RNK	Montgomery, Pulaski, City of Radford	30 hr
Apr 24, 12:57 PM EDT	Areal Flood Advisory	RNK	Wythe	6 hr
Apr 24, 2:53 PM EDT	River Flood Warning	RNK	Giles	34 hr
Apr 24, 3:30 PM EDT	River Flood Warning	RNK	Charlotte, Halifax	4 days
Apr 24, 6:25 PM EDT	Areal Flood Advisory	RNK	Giles, Pulaski	6 hr
Apr 24, 6:53 PM EDT	Areal Flood Advisory	RNK	Wythe	6 hr
Apr 23, 8:59 PM EDT	Areal Flood Warning	RNK	Alleghany, Wilkes	16 hr
Apr 24, 2:15 AM EDT	Areal Flood Advisory	RNK	Watauga	6 hr
Apr 24, 3:40 AM EDT	Flash Flood Warning	RNK	Wilkes	6 hr
Apr 24, 5:04 AM EDT	River Flood Warning	RNK	Surry, Yadkin	29 hr
Apr 24, 5:20 AM EDT	Areal Flood Advisory	RNK	Mercer	6 hr
Apr 24, 11:17 AM EDT	Areal Flood Advisory	RNK	Mercer, Summers	6 hr
Apr 24, 5:15 PM EDT	Areal Flood Advisory	RNK	Mercer, Summers	6 hr

Nearby

Areal Flood Warnings in North Carolina, 2017 Every areal flood warning in 2017

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.