Alert archive / South Carolina / Frost Advisories in 2012
Frost Advisory 2, NWS Charleston, SC
NWS Charleston, SC issued this frost advisory at Nov 7, 2012, 9:22 PM EST for 5 counties in South Carolina. It took effect at Nov 8, 2012, 1:00 AM EST. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Nov 7, 2012, 9:22 PM EST (02:22 UTC)
- In effect from
- Nov 8, 2012, 1:00 AM EST
- Expired
- Nov 8, 2012, 8:00 AM EST
- In force
- 7 hr
- Issued by
- NWS Charleston, SC
Counties Allendale County, SC, Berkeley County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC
The radar
The Charleston,SC radar (KCLX), 48 km from the middle of the area, began a volume at 02:23 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
Charleston AFB, SC (KCHS), launched 00:00Z, 2.4 hours before the alert went out and 66 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
- 1411 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
719 WWUS72 KCHS 080222 NPWCHS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHARLESTON SC 922 PM EST WED NOV 7 2012 SCZ040-042>045-081030- /O.NEW.KCHS.FR.Y.0002.121108T0600Z-121108T1300Z/ ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INCLUDING THE CITIES OF...ALLENDALE...HAMPTON...WALTERBORO... ST. GEORGE...SUMMERVILLE...MONCKS CORNER 922 PM EST WED NOV 7 2012 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM EST THURSDAY... THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 8 AM EST THURSDAY. * HAZARDS: SCATTERED FROST. * LOCATIONS: THE RISK FOR SCATTERED FROST WILL BE GREATEST ALONG AND NORTH OF A LINE FROM ALLENDALE TO WALTERBORO...SUMMERVILLE AND JAMESTOWN. THIS INCLUDES HAMPTON...WILLIAMS...SMOAKS...SAINT GEORGE AND SAINT STEPHEN. THE COVERAGE FROST MAY BE SOMEWHAT LIMITED AROUND MONCKS CORNER WHERE INFLUENCES FROM LAKE MOULTRIE WILL BE THE GREATEST. * TEMPERATURES: MID 30S. * TIMING: THE GREATEST COVERAGE OF FROST WILL OCCUR BETWEEN 4 AM AND 9 AM THURSDAY. * IMPACTS: FROST MAY DAMAGE OUTDOOR VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ ST
2 follow-up statements
943 WWUS72 KCHS 080912 NPWCHS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHARLESTON SC 412 AM EST THU NOV 8 2012 SCZ040-042>045-081300- /O.CON.KCHS.FR.Y.0002.000000T0000Z-121108T1300Z/ ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INCLUDING THE CITIES OF...ALLENDALE...HAMPTON...WALTERBORO... ST. GEORGE...SUMMERVILLE...MONCKS CORNER 412 AM EST THU NOV 8 2012 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING... * HAZARDS: SCATTERED FROST. * LOCATIONS: THE RISK FOR SCATTERED FROST WILL BE GREATEST ALONG AND NORTH OF A LINE FROM ALLENDALE TO WALTERBORO...SUMMERVILLE AND JAMESTOWN. THIS INCLUDES HAMPTON...WILLIAMS...SMOAKS... SAINT GEORGE AND SAINT STEPHEN. THE COVERAGE FROST MAY BE SOMEWHAT LIMITED AROUND MONCKS CORNER WHERE INFLUENCES FROM LAKE MOULTRIE WILL BE THE GREATEST. * TEMPERATURES: MID 30S. * TIMING: THE GREATEST COVERAGE OF FROST WILL OCCUR BETWEEN 4 AM AND 8 AM. * IMPACTS: FROST MAY DAMAGE OUTDOOR VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
452 WWUS72 KCHS 081232 NPWCHS URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHARLESTON SC 732 AM EST THU NOV 8 2012 SCZ040-042>045-081345- /O.EXP.KCHS.FR.Y.0002.000000T0000Z-121108T1300Z/ ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INCLUDING THE CITIES OF...ALLENDALE...HAMPTON...WALTERBORO... ST. GEORGE...SUMMERVILLE...MONCKS CORNER 732 AM EST THU NOV 8 2012 ...FROST ADVISORY WILL EXPIRE AT 8 AM EST THIS MORNING... THE FROST ADVISORY FOR THE AREA WILL EXPIRE AT 8 AM AS TEMPERATURES WARM INTO THE 40S BY MID MORNING. $$
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 8, 12:15 PM EST | Frost Advisory | CHS | Allendale, Berkeley, Colleton, Dorchester, Hampton | 21 hr |
| Nov 8, 6:45 PM EST | Freeze Warning | CHS | Allendale, Berkeley, Colleton, Dorchester, Hampton | 14 hr |
Nearby
Frost Advisories in South Carolina, 2012Every frost advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.