Alert archive / North Carolina / Flash Flood Watches in 2015
Flash Flood Watch 4, NWS Raleigh, NC
NWS Raleigh, NC issued this flash flood watch at Dec 22, 2015, 3:53 PM EST for 9 counties in North Carolina. It took effect at Dec 23, 2015, 12:00 AM EST. It was in force for 43 hr.
The area
The counties it named.
The facts
- Issued
- Dec 22, 2015, 3:53 PM EST (20:53 UTC)
- In effect from
- Dec 23, 2015, 12:00 AM EST
- Expired
- Dec 24, 2015, 6:41 PM EST
- In force
- 43 hr
- Issued by
- NWS Raleigh, NC
- Flood severity
- None
Counties Alamance County, NC, Anson County, NC, Davidson County, NC, Forsyth County, NC, Guilford County, NC, Montgomery County, NC, Randolph County, NC, Richmond County, NC, Stanly County, NC
The radar
The Raleigh/Durham radar (KRAX), 131 km from the middle of the area, began a volume at 20:56 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, 8.9 hours before the alert went out and 54 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
- 534 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch 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 flash flood watch went out at Dec 22, 3:15 PM EST, 38 minutes earlier.
Area forecast discussion, Dec 22, 3:15 PM EST, 38 minutes before
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</html>Hazardous weather outlook, Dec 22, 11:30 AM EST, 4 hours 23 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RALEIGH NC 1130 AM EST TUE DEC 22 2015 NCZ021-022-038-039-073-074-083-231630- FORSYTH-GUILFORD-DAVIDSON-RANDOLPH-STANLY-MONTGOMERY-ANSON- 1130 AM EST TUE DEC 22 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. HEAVY RAIN IS EXPECTED TO SPREAD ACROSS WESTERN NORTH CAROLINA LATE TONIGHT AND EARLY DURING THE DAY ON WEDNESDAY. WHILE THE HEAVIEST RAINFALL WILL BE IN THE MOUNTAINS...ONE TO TWO INCHES OF ADDITIONAL RAINFALL IS POSSIBLE IN THE WESTERN PIEDMONT...WHICH MAY LEAD TO SOME RUNOFF PROBLEMS AND MINOR FLOODING IN URBAN AND FLOOD PRONE AREAS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. HEAVY RAINFALL EARLY WEDNESDAY MAY LEAD TO SOME MINOR FLOODING CONCERNS IN THE WESTERN PIEDMONT. OTHERWISE...HAZARDOUS WEATHER IS NOT EXPECTED THROUGH THE WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. NCZ007>011-023>028-040>043-075>078-084>086-088-089-231630- PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-ALAMANCE-ORANGE-DURHAM- FRANKLIN-NASH-EDGECOMBE-CHATHAM-WAKE-JOHNSTON-WILSON-MOORE-LEE- HARNETT-WAYNE-RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON- 1130 AM EST TUE DEC 22 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Dec 22, 10:32 AM EST, 5 hours 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH NC 1032 AM EST TUE DEC 22 2015 NCZ021-022-038-039-221800- FORSYTH-GUILFORD-DAVIDSON-RANDOLPH- INCLUDING THE CITIES OF...WINSTON-SALEM...GREENSBORO... HIGH POINT...LEXINGTON...THOMASVILLE...ASHEBORO...ARCHDALE... TRINITY 1032 AM EST TUE DEC 22 2015 ...AREAS OF DENSE FOG ACROSS THE WESTERN PIEDMONT THROUGH EARLY AFTERNOON... IN THE WAKE OF THE EARLY MORNING RAINFALL...AREAS OF FOG...SOME LOCALLY DENSE...ARE DEVELOPING ACROSS PORTIONS OF THE WESTERN PIEDMONT. VISIBILITY WILL BE REDUCED TO ONE QUARTER MILE OR LESS IN SOME AREAS. MOTORISTS ARE URGED TO DRIVE WITH CAUTION AND BE PREPARED FOR THE RAPIDLY CHANGING VISIBILITY. A SOUTHERLY WIND IS EXPECTED TO SCOUR THE FOG BY EARLY AFTERNOON...GREATLY IMPROVING VISIBILITIES. 22
Local storm report, Dec 22, 3:29 PM EST, 24 minutes before
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</html>The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 22, 7:23 AM EST | Areal Flood Advisory | RAH | Alamance, Anson, Chatham, Cumberland, Durham, Franklin and 18 more | 3 hr |
| Dec 22, 9:12 AM EST | Special Weather Statement | RAH | Johnston, Wayne | 48 min |
| Dec 22, 2:09 PM EST | River Flood Warning | RAH | Anson, Stanly | 21 hr |
| Dec 22, 2:14 PM EST | River Flood Warning | RAH | Chatham | 18 hr |
Nearby
Flash Flood Watches in North Carolina, 2015Every flash flood watch in 2015
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.