Alert archive / North Carolina / Flash Flood Warnings in 2016

Flash Flood Warning 10, NWS Raleigh, NC

July 16, 2016Guilford County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Jul 16, 2016, 6:41 PM EDT for Guilford County, North Carolina. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 16, 2016, 6:41 PM EDT (22:41 UTC)
Expired: Jul 16, 2016, 9:45 PM EDT
In force: 3 hr
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Flood severity: None

County Guilford County, NC

The radar

The Roanoke radar (KFCX), 108 km from the middle of the area, began a volume at 22:45 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 was reported inside it

Time	Report	Where	Remark
Jul 16, 7:00 PM EDT	FLASH FLOOD	Greensboro, NC	MULTIPLE ROADS FLOODED IN GREENSBORO, INCLUDING (BUT NOT LIMITED TO), US 29 AT BESSEMER AVE, N CHURCH ST AT MARKET ST, WENDOVER AT HOLDEN, US 29 AT HEADQUARTERS DR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.7 hours before the alert went out and 19 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: 242 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 882 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

851 
WGUS52 KRAH 162241
FFWRAH
NCC081-170145-
/O.NEW.KRAH.FF.W.0010.160716T2241Z-160717T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
641 PM EDT SAT JUL 16 2016

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL GUILFORD COUNTY IN CENTRAL NORTH CAROLINA...

* UNTIL 945 PM EDT
  
* AT 639 PM EDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED FLOODING
  IN DOWNTOWN GREENSBORO. UP TO TWO INCHES OF RAIN HAVE ALREADY
  FALLEN. FLASH FLOODING IS EXPECTED. TRAINING OF THUNDERSTORMS WILL
  CONTINUE OVER GREENSBORO TO NEAR MCLEANSVILLE WITH AN ADDITIONAL 1
  TO 2 INCHES OF RAIN LIKELY. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  GREENSBORO...MCLEANSVILLE...GIBSONVILLE...LAKE TOWNSEND MARINA...
  LAKE GUILFORD MACKINTOSH MARINA...LAKE BRANDT...
  LAKE TOWNSEND AND LAKE JEANETTE MARINA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3624 7953 3605 7954 3600 7997 3619 7998
      3625 7971

$$

PWB

1 follow-up statement

764 
WGUS72 KRAH 170055
FFSRAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
855 PM EDT SAT JUL 16 2016

NCC081-170105-
/O.CAN.KRAH.FF.W.0010.000000T0000Z-160717T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GUILFORD NC-
855 PM EDT SAT JUL 16 2016

...THE FLASH FLOOD WARNING FOR CENTRAL GUILFORD COUNTY IS
CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3624 7953 3605 7954 3600 7997 3619 7998
      3625 7971

$$

KRD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 1:50 AM EDT	Areal Flood Advisory	RAH	Forsyth	115 min
Jul 16, 3:41 PM EDT	Special Weather Statement	RAH	Edgecombe	49 min
Jul 16, 4:03 PM EDT	Areal Flood Advisory	RAH	Edgecombe	3 hr
Jul 16, 4:20 PM EDT	Flash Flood Warning	RAH	Edgecombe, Nash, Wilson	3 hr
Jul 16, 4:25 PM EDT	Severe Thunderstorm Warning	RAH	Johnston	51 min
Jul 16, 4:33 PM EDT	Special Weather Statement	RAH	Edgecombe	42 min
Jul 16, 5:03 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Nash, Wilson	57 min
Jul 16, 5:18 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Wake	57 min
Jul 16, 5:22 PM EDT	Special Weather Statement	RAH	Guilford	38 min
Jul 16, 5:50 PM EDT	Special Weather Statement	RAH	Guilford	55 min
Jul 16, 5:56 PM EDT	Special Weather Statement	RAH	Anson, Davidson, Montgomery, Stanly	79 min
Jul 16, 6:00 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Halifax, Nash	30 min
Jul 16, 6:03 PM EDT	Severe Thunderstorm Warning	RAH	Guilford	42 min
Jul 16, 6:11 PM EDT	Areal Flood Advisory	RAH	Guilford	3 hr
Jul 16, 6:37 PM EDT	Special Weather Statement	RAH	Person	53 min
Jul 16, 6:40 PM EDT	Severe Thunderstorm Warning	RAH	Anson, Montgomery, Richmond, Stanly	65 min
Jul 16, 6:59 PM EDT	Flash Flood Warning	RAH	Edgecombe, Nash, Wilson	6 hr
Jul 16, 7:13 PM EDT	Special Weather Statement	RAH	Wake	62 min
Jul 16, 7:14 PM EDT	Flash Flood Warning	RAH	Wake	3 hr
Jul 16, 7:21 PM EDT	Areal Flood Advisory	RAH	Durham, Granville, Orange, Person	3 hr
Jul 16, 7:45 PM EDT	Severe Thunderstorm Warning	RAH	Anson, Hoke, Montgomery, Moore, Richmond, Scotland	60 min
Jul 16, 7:55 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Granville, Vance, Warren	65 min

Nearby

Flash Flood Warnings in North Carolina, 2016 Every flash flood warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.