Alert archive / Maryland / Freeze Warnings in 2012
Freeze Warning 3, NWS Baltimore/Washington
NWS Baltimore/Washington issued this freeze warning at Apr 2, 2012, 12:01 PM EDT for 4 counties in Maryland; 4 counties in West Virginia. It took effect at Apr 3, 2012, 2:00 AM EDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 2, 2012, 12:01 PM EDT (16:01 UTC)
- In effect from
- Apr 3, 2012, 2:00 AM EDT
- Expired
- Apr 3, 2012, 8:14 AM EDT
- In force
- 6 hr
- Issued by
- NWS Baltimore/Washington
Counties Allegany County, MD, Carroll County, MD, Frederick County, MD, Washington County, MD, Berkeley County, WV, Hampshire County, WV, Mineral County, WV, Morgan County, WV
The radar
The Sterling radar (KLWX), 79 km from the middle of the area, began a volume at 16:01 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 4.0 hours before the alert went out and 86 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
- 1072 m above ground
- 0-6 km bulk shear
- 98 kt
- 0-1 km storm-relative helicity
- -98 m²/s²
- 0-3 km storm-relative helicity
- -22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this freeze warning went out at Apr 2, 11:38 AM EDT, 23 minutes earlier.
Area forecast discussion, Apr 2, 11:38 AM EDT, 23 minutes before
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</html>Hazardous weather outlook, Apr 2, 11:36 AM EDT, 25 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1136 AM EDT MON APR 2 2012 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 031000- CHESAPEAKE BAY NORTH OF POOLES ISLAND MD- CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD- CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD- CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD- CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA- TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD- TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD- TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA- PATAPSCO RIVER INCLUDING BALTIMORE HARBOR- CHESTER RIVER TO QUEENSTOWN MD-EASTERN BAY- CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER- PATUXENT RIVER TO BROOMES ISLAND MD- TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-DISTRICT OF COLUMBIA-NORTHERN BALTIMORE-HARFORD- SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS- CALVERT-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE- 1136 AM EDT MON APR 2 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MARYLAND PORTION OF THE CHESAPEAKE BAY...TIDAL POTOMAC RIVER...AND ADJACENT COUNTIES IN CENTRAL MARYLAND AND NORTHERN VIRGINIA AS WELL AS THE DISTRICT OF COLUMBIA. .DAY ONE...THIS AFTERNOON AND TONIGHT A SMALL CRAFT ADVISORY IS IN EFFECT UNTIL 8 PM FOR ALL THE WATERS. BELOW SANDY POINT ON THE BAY AND COBB ISLAND ON THE POTOMAC...THE SMALL CRAFT ADVISORY CONTINUES THROUGH 2AM. THE COMBINATION OF GUSTY NORTHWEST WINDS...LOW RELATIVE HUMIDITIES AND RELATIVELY LOW FUEL MOISTURE WILL LEAD TO AN ENHANCED THREAT FOR WILDFIRES THIS AFTERNOON ACROSS SOUTHERN MARYLAND AND PORTIONS OF NORTHERN AND CENTRAL VIRGINIA. AREAS OF FROST WILL BE POSSIBLE NORTH OF BALTIMORE LATE TONIGHT. FROST ADVISORIES MAY BE REQUIRED. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A SMALL CRAFT ADVISORY MAY BE NEEDED FOR PORTIONS OF THE WATERS TUESDAY NIGHT AND WEDNESDAY. AREAS OF FROST MAY DEVELOP AGAIN LATE THURSDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504- WVZ050>053-055-501>506-031000- WASHINGTON-FREDERICK MD-CARROLL-MONTGOMERY-HOWARD- EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-AUGUSTA- ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-NELSON- ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE-CULPEPER- NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND- EASTERN HIGHLAND-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY- WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL- WESTERN PENDLETON-EASTERN PENDLETON- 1136 AM EDT MON APR 2 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN WEST VIRGINIA... NORTHERN AND CENTRAL VIRGINIA...AND CENTRAL AND WESTERN MARYLAND WITH THE EXCEPTION OF GARRETT COUNTY. .DAY ONE...THIS AFTERNOON AND TONIGHT AREAS OF FROST WILL BE POSSIBLE ACROSS THE NORTHWESTERN SUBURBS OF THE BALTIMORE-WASHINGTON METROPOLITAN AREA AS WELL AS THE SHENANDOAH VALLEY AND POTOMAC HIGHLANDS LATE TONIGHT. FOR A FEW OUTLYING LOCATIONS IT MAY GET CLOSE TO FREEZING. FROST ADVISORIES MAY BE REQUIRED. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY AREAS OF FROST MAY DEVELOP AGAIN LATE THURSDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Apr 2, 9:17 AM EDT, 2 hours 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 917 AM EDT MON APR 2 2012 DCZ001-MDZ013-014-016>018-VAZ052>057-022200- DISTRICT OF COLUMBIA-PRINCE GEORGES-ANNE ARUNDEL-CHARLES- ST. MARYS-CALVERT-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE- INCLUDING THE CITIES OF...WASHINGTON...ANNAPOLIS...WALDORF... ST MARYS CITY...MANASSAS...MANASSAS PARK...FAIRFAX...ALEXANDRIA... FALLS CHURCH...FREDERICKSBURG 917 AM EDT MON APR 2 2012 ...ENHANCED THREAT FOR THE SPREAD OF WILDFIRES THIS AFTERNOON... NORTHWEST WINDS WILL AVERAGE BETWEEN 10 AND 15 MPH WITH GUSTS UP TO 25 MPH THIS AFTERNOON. THE RELATIVE HUMIDITY WILL DROP TO BETWEEN 30 AND 35 PERCENT ACROSS MOST LOCATIONS. DESPITE LIGHT RAINFALL SUNDAY NIGHT...FUEL MOISTURE REMAINS LOW ACROSS LOWER SOUTHERN MARYLAND INTO PORTIONS OF NORTHERN AND CENTRAL VIRGINIA. THE COMBINATION OF GUSTY WINDS...LOW RELATIVE HUMIDITY AND LOW FUEL MOISTURE WILL ENHANCE THE THREAT FOR THE SPREAD OF WILDFIRES THIS AFTERNOON ACROSS THESE AREAS. OPEN BURNING OF ANY TYPE IS CONSIDERED VERY HAZARDOUS THIS TIME OF YEAR. ACCIDENTAL ESCAPED DEBRIS BURNS ARE THE NUMBER ONE CAUSE OF WILDFIRES.
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 2:44 AM EDT | Coastal Flood Statement | LWX | Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church | 5 hr |
| Apr 2, 8:12 AM EDT | Gale Warning | LWX | 3 hr | |
| Apr 2, 8:12 AM EDT | Small Craft Advisory | LWX | 14 hr | |
| Apr 2, 12:01 PM EDT | Frost Advisory | LWX | Clarke, Culpeper, Fauquier, Frederick, Greene, Madison and 9 more | 20 hr |
Nearby
Freeze Warnings in Maryland, 2012Freeze Warnings in West Virginia, 2012Every freeze 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.