Alert archive / North Carolina / Flash Flood Warnings in 2017

Flash Flood Warning 18, NWS Raleigh, NC

August 24, 2017Stanly County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Aug 24, 2017, 2:59 AM EDT for Stanly County, North Carolina. It was in force for 91 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
Aug 24, 2017, 2:59 AM EDT (06:59 UTC)
Expired
Aug 24, 2017, 4:30 AM EDT
In force
91 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Flood severity
None

County Stanly County, NC

The radar

The Raleigh/Durham radar (KRAX), 163 km from the middle of the area, began a volume at 07:00 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 00:00Z, 7.0 hours before the alert went out and 97 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2017-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 162 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2017-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
162 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1542 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
-1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

424 
WGUS52 KRAH 240659
FFWRAH
NCC167-240830-
/O.NEW.KRAH.FF.W.0018.170824T0659Z-170824T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Raleigh NC
259 AM EDT THU AUG 24 2017

The National Weather Service in Raleigh has issued a

* Flash Flood Warning for...
  Stanly County in central North Carolina...

* Until 430 AM EDT
  
* At 258 AM EDT, local law enforcement officials reported a slow
  moving thunderstorm producing flooding across the warned area. Up
  to three inches of rain have already fallen. Flash flooding is 
  expected to begin shortly. Local law enforcement requests the 
  public stay off the roads unless its an emergency.

* Some locations that will experience flooding include...
  Albemarle, Badin Lake, Plyler, Locust, Norwood, Badin, Oakboro,
  Stanfield.

This includes the following flood prone areas...Mountain Creek at
Mountain Creek Road...Town Creek at Highway 52 and Snuggs Park
Road...Hardy Creek at Mt Zion Church Road...Big Bear Creek at
Bridgeport Road...Rocky River at Highway 52...Big Bear Creek at
Booger Hollar Road...Memory Creek at Main Street...Town Creek at
Bethany Road and Quemby Mall and Delco Plaza.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. 

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Please report flooding to your local law enforcement agency when you
can do so safely.


&&

LAT...LON 3526 8045 3547 8016 3546 8011 3540 8009
      3537 8005 3536 8007 3526 8010 3518 8005
      3515 8007 3519 8011 3517 8014 3517 8016
      3515 8016 3517 8020 3516 8022 3521 8025
      3517 8035 3518 8037 3516 8044 3518 8050

$$

10
2 follow-up statements
261 
WGUS72 KRAH 240741
FFSRAH

Flash Flood Statement
National Weather Service Raleigh NC
341 AM EDT THU AUG 24 2017

NCC167-240830-
/O.CON.KRAH.FF.W.0018.000000T0000Z-170824T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Stanly NC-
341 AM EDT THU AUG 24 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 AM EDT FOR
STANLY COUNTY...

At 336 AM EDT, local law enforcement reported flooding on roads in 
Albemarle and Oakboro. Although the heavy rain has ended, up to 
three inches of rain have fallen across Stanly county and roadways 
are likely to continue to experience issues through 430 AM. Law 
enforcement requests the public stay off the roads, except in the 
case of an emergency.

Some locations that will experience flooding include...
Albemarle, Badin Lake, Plyler, Locust, Norwood, Badin, Oakboro and 
Stanfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Be 
especially cautious at night when it is harder to recognize the 
dangers of flooding.

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3526 8045 3547 8016 3546 8011 3540 8009
      3537 8005 3536 8007 3526 8010 3518 8005
      3515 8007 3519 8011 3517 8014 3517 8016
      3515 8016 3517 8020 3516 8022 3521 8025
      3517 8035 3518 8037 3516 8044 3518 8050

$$

10
319 
WGUS72 KRAH 240823
FFSRAH

Flash Flood Statement
National Weather Service Raleigh NC
423 AM EDT THU AUG 24 2017

NCC167-240832-
/O.EXP.KRAH.FF.W.0018.000000T0000Z-170824T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Stanly NC-
423 AM EDT THU AUG 24 2017

...THE FLASH FLOOD WARNING FOR STANLY COUNTY WILL EXPIRE AT 430 AM
EDT...

The heavy rain has ended and flood waters have receded. Flooding is 
no longer expected to pose a threat. Please continue to heed any 
remaining road closures and use caution while driving.

LAT...LON 3526 8045 3547 8016 3546 8011 3540 8009
      3537 8005 3536 8007 3526 8010 3518 8005
      3515 8007 3519 8011 3517 8014 3517 8016
      3515 8016 3517 8020 3516 8022 3521 8025
      3517 8035 3518 8037 3516 8044 3518 8050

$$

10

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 12:23 AM EDTAreal Flood AdvisoryRAHGuilford3 hr
Aug 24, 2:25 AM EDTAreal Flood AdvisoryRAHAnson, Stanly3 hr

Nearby

Flash Flood Warnings in North Carolina, 2017Every flash 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.