Alert archive / North Carolina / Flash Flood Warnings in 2012
Flash Flood Warning 10, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this flash flood warning at Jul 21, 2012, 6:36 PM EDT for 4 counties in North Carolina. It was in force for 105 min. 3 reports 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 21, 2012, 6:36 PM EDT (22:36 UTC)
- Expired
- Jul 21, 2012, 8:21 PM EDT
- In force
- 105 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Alexander County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC
The radar
The Greer radar (KGSP), 130 km from the middle of the area, began a volume at 22:39 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 21, 7:00 PM EDT | FLASH FLOOD | Longview, NC | FIRE DEPT REPORTS FLOODING OF AN APARTMENT COMPLEX ON 18TH ST IN LONGVIEW. |
| Jul 21, 7:15 PM EDT | HEAVY RAIN 3.94 | 2 W Hickory, NC | MEASURED AT HICKORY REGIONAL AIRPORT SINCE 453 PM. |
| Jul 21, 7:30 PM EDT | HEAVY RAIN 4.38 | 3 W Hickory, NC | 4.38 INCHES OF RAIN FELL IN A 2 HOUR PERIOD JUST EAST OF THE HICKORY AIRPORT ON SIXTH AVENUE NORTHWEST. |
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, 10.6 hours before the alert went out and 131 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
- 679 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 870 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
421
WGUS52 KGSP 212236
FFWGSP
NCC003-023-027-035-220130-
/O.NEW.KGSP.FF.W.0010.120721T2236Z-120722T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
636 PM EDT SAT JUL 21 2012
THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL BURKE COUNTY IN WESTERN NORTH CAROLINA...
NORTHWESTERN CATAWBA COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
SOUTHEASTERN CALDWELL COUNTY IN WESTERN NORTH CAROLINA...
SOUTHWESTERN ALEXANDER COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
* UNTIL 930 PM EDT
* AT 634 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SERIES OF THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL ACROSS THE
WARNED AREA...MOVING EAST AT 20 MPH. THESE THUNDERSTORMS WERE
PRODUCING RAINFALL AT RATES IN EXCESS OF TWO INCHES PER HOUR...AND
RADAR INDICATED THAT 2 TO 3 INCHES HAS ALREADY FALLEN IN PARTS OF
THE LONGVIEW TO HICKORY AREA. THIS HEAVY RAINFALL WILL CONTINUE
THROUGH 730 PM.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HICKORY...BETHLEHEM...CONNELLY SPRINGS...GRANITE FALLS...ICARD...
LAKE HICKORY...LAKE RHODHISS...LONGVIEW...RUTHERFORD COLLEGE AND
ST. STEPHENS.
FLOODING IS MOST LIKELY ALONG HENRY FORK...DROWNING CREEK...AND
NEARBY TRIBUTARIES. SEVERE STREET FLOODING IS LIKELY FROM HILDEBRAN
TO LONGVIEW TO HICKORY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
TO REPORT HIGH WATER...FLOODING...MUDSLIDES...LANDSLIDES OR OTHER
SEVERE WEATHER THROUGH OUR AUTOMATED REPORTING SYSTEM...CALL OUR TOLL
FREE NUMBER... 1 8 7 7...6 3 3...6 7 7 2.
&&
LAT...LON 3589 8121 3584 8118 3582 8118 3574 8119
3569 8126 3566 8140 3568 8152 3578 8154
3582 8141 3586 8134
$$
HG2 follow-up statements
646
WGUS72 KGSP 212345
FFSGSP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
745 PM EDT SAT JUL 21 2012
NCC003-212353-
/O.CAN.KGSP.FF.W.0010.000000T0000Z-120722T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALEXANDER NC-
745 PM EDT SAT JUL 21 2012
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHWESTERN
ALEXANDER COUNTY IS CANCELLED...
RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE EXTREME SOUTHWEST PART OF
ALEXANDER COUNTY. ADDITIONAL HEAVY RAIN COULD FALL AGAIN LATER THIS
EVENING WITH ANY PASSING THUNDERSTORMS...BUT FLASH FLOODING IS NOT
EXPECTED IN ALEXANDER COUNTY AT THIS TIME.
LAT...LON 3580 8133 3581 8124 3577 8123 3573 8124
3568 8128 3566 8140 3568 8152 3578 8154
3582 8141 3583 8134
$$
NCC023-027-035-220130-
/O.CON.KGSP.FF.W.0010.000000T0000Z-120722T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATAWBA NC-CALDWELL NC-BURKE NC-
745 PM EDT SAT JUL 21 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EAST CENTRAL BURKE...
SOUTHEASTERN CALDWELL AND NORTHWESTERN CATAWBA COUNTIES UNTIL 930 PM
EDT...
AT 738 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE THUNDERSTORMS ACROSS THE GREATER HICKORY AREA HAD
DIMINISHED IN INTENSITY AND COVERAGE...HOWEVER...LIGHT TO MODERATE
RAIN PERSISTS AND ADDITIONAL THUNDERSTORMS COULD REDEVELOP FROM THE
WEST THIS EVENING.
RADAR AND RAIN GAGE DATA INDICATE THAT ABOUT FOUR INCHES OF RAIN
FELL AT SOME LOCATIONS IN THE FLASH FLOOD WARNING OVER THE PAST
THREE HOURS. HARDEST HIT WERE THE ICARD...LONGVIEW...AND HICKORY
COMMUNITIES. FLOODING HAS ALREADY BEEN REPORTED ON 18TH STREET AND
LONGVIEW ROAD. RUNOFF FROM THIS EXCESSIVE RAINFALL MAY CAUSE
ADDITIONAL FLASH FLOODING TO OCCUR OVER THE NEXT HOUR.
SOME LOCATIONS THAT MAY EXPERIENCE FLASH FLOODING
INCLUDE...HICKORY...CONNELLY SPRINGS...GRANITE
FALLS...ICARD...LONGVIEW...RUTHERFORD COLLEGE AND ST. STEPHENS.
FLOODING WILL ALSO LIKELY DEVELOP ALONG HENRY FORK...DROWNING
CREEK...LONGVIEW CREEK...AND NEARBY TRIBUTARIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. TURN AROUND AND FIND ANOTHER ROUTE.
&&
LAT...LON 3580 8133 3581 8124 3577 8123 3573 8124
3568 8128 3566 8140 3568 8152 3578 8154
3582 8141 3583 8134
$$
HG283
WGUS72 KGSP 220021
FFSGSP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
821 PM EDT SAT JUL 21 2012
NCC023-027-035-220036-
/O.CAN.KGSP.FF.W.0010.000000T0000Z-120722T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATAWBA NC-CALDWELL NC-BURKE NC-
821 PM EDT SAT JUL 21 2012
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EAST CENTRAL
BURKE...SOUTHEASTERN CALDWELL AND NORTHWESTERN CATAWBA COUNTIES IS
CANCELLED...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 3580 8133 3581 8124 3577 8123 3573 8124
3568 8128 3566 8140 3568 8152 3578 8154
3582 8141 3583 8134
$$
HGThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 11:42 PM EDT | Special Weather Statement | GSP | Avery, Madison, Mitchell, Yancey | 93 min |
| Jul 21, 2:46 PM EDT | Special Weather Statement | GSP | McDowell | 29 min |
| Jul 21, 3:12 PM EDT | Special Weather Statement | GSP | Swain | 33 min |
| Jul 21, 3:38 PM EDT | Special Weather Statement | GSP | Davie | 37 min |
| Jul 21, 4:12 PM EDT | Special Weather Statement | GSP | Haywood | 33 min |
| Jul 21, 4:43 PM EDT | Special Weather Statement | GSP | Buncombe | 32 min |
| Jul 21, 5:09 PM EDT | Special Weather Statement | GSP | Rutherford | 36 min |
| Jul 21, 5:41 PM EDT | Special Weather Statement | GSP | Catawba | 34 min |
| Jul 21, 5:43 PM EDT | Special Weather Statement | GSP | Union | 47 min |
| Jul 21, 5:50 PM EDT | Severe Thunderstorm Warning | GSP | Union | 21 min |
| Jul 21, 5:58 PM EDT | Special Weather Statement | GSP | Burke | 32 min |
| Jul 21, 6:08 PM EDT | Special Weather Statement | GSP | Iredell | 37 min |
| Jul 21, 6:14 PM EDT | Severe Thunderstorm Warning | GSP | Alexander, Catawba, Iredell | 61 min |
| Jul 21, 6:19 PM EDT | Special Weather Statement | GSP | Catawba | 26 min |
| Jul 21, 6:26 PM EDT | Areal Flood Advisory | GSP | Alexander, Burke, Caldwell, Catawba, Iredell | 2 hr |
| Jul 21, 6:29 PM EDT | Special Weather Statement | GSP | Iredell | 31 min |
| Jul 21, 6:50 PM EDT | Special Weather Statement | GSP | Caldwell | 25 min |
| Jul 21, 6:57 PM EDT | Areal Flood Advisory | GSP | Iredell | 73 min |
| Jul 21, 7:11 PM EDT | Flash Flood Warning | GSP | Iredell | 60 min |
| Jul 21, 7:16 PM EDT | Special Weather Statement | GSP | Davie | 29 min |
| Jul 21, 7:19 PM EDT | Special Weather Statement | GSP | Davie | 26 min |
Nearby
Flash Flood Warnings in North Carolina, 2012Every flash flood warning in 2012
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.