Alert archive / Maryland / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jan 31, 2013, 1:54 AM EST for 5 counties in Maryland. It was in force for 66 min. 2 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
- Jan 31, 2013, 1:54 AM EST (06:54 UTC)
- Expired
- Jan 31, 2013, 3:00 AM EST
- In force
- 66 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 65 km from the middle of the area, began a volume at 06:55 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 |
|---|---|---|---|
| Jan 31, 2:18 AM EST | TSTM WND DMG | Centreville, MD | TREE DOWN IN CENTREVILLE. |
| Jan 31, 2:22 AM EST | TSTM WND DMG | Crumpton, MD | TREE DOWN IN CRUMPTON. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 6.9 hours before the alert went out and 106 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
- 320 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 511 m above ground
- 0-6 km bulk shear
- 98 kt
- 0-1 km storm-relative helicity
- 803 m²/s²
- 0-3 km storm-relative helicity
- 880 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.1
The text
As transmitted, in the capitals the NWS used until 2016.
426
WUUS51 KPHI 310654
SVRPHI
MDC011-015-029-035-041-310800-
/O.NEW.KPHI.SV.W.0001.130131T0654Z-130131T0800Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
154 AM EST THU JAN 31 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CAROLINE COUNTY IN EASTERN MARYLAND...
TALBOT COUNTY IN EASTERN MARYLAND...
SOUTHEASTERN CECIL COUNTY IN NORTHEAST MARYLAND...
KENT COUNTY IN NORTHEAST MARYLAND...
QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
* UNTIL 300 AM EST
* AT 147 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM NEWTOWN TO 35 MILES SOUTHWEST OF TILGHMAN ISLAND...OR ALONG A
LINE EXTENDING FROM 12 MILES SOUTH OF ABERDEEN TO 16 MILES WEST OF
COVE POINT...AND MOVING EAST AT 50 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
BETTERTON...TILGHMAN ISLAND...OVERTON AND LANGFORD AROUND 200 AM
EST...
GRASONVILLE...CHESTERTOWN...TALBOT AND OLD TOWN AROUND 205 AM
EST...
ST. MICHAELS AND MORGNEC AROUND 210 AM EST...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO
GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 3872 7626 3867 7635 3877 7640 3887 7625
3881 7621 3883 7620 3894 7624 3883 7637
3895 7637 3904 7632 3899 7627 3900 7618
3914 7629 3932 7619 3938 7606 3947 7601
3952 7578 3865 7572 3869 7590 3857 7604
TIME...MOT...LOC 0654Z 253DEG 35KT 3936 7612 3834 7660
$$
HAYES3 follow-up statements
276
WWUS51 KPHI 310714
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
214 AM EST THU JAN 31 2013
MDC011-015-029-035-041-310800-
/O.CON.KPHI.SV.W.0001.000000T0000Z-130131T0800Z/
CECIL MD-KENT MD-CAROLINE MD-QUEEN ANNE'S MD-TALBOT MD-
214 AM EST THU JAN 31 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM EST
FOR TALBOT...QUEEN ANNE'S...CAROLINE...KENT AND SOUTHEASTERN CECIL
COUNTIES...
AT 209 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM CECILTON TO 25 MILES SOUTHWEST OF OXFORD...OR ALONG A
LINE EXTENDING FROM 15 MILES SOUTHEAST OF ABERDEEN TO COVE POINT...
MOVING EAST AT 40 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
CAYOTS...STARR...SKIPTON AND OXFORD BY 220 AM EST...
BOHEMIAS MILLS...MILLINGTON...EASTON AND SUDLERSVILLE BY 225 AM
EST...
HILLSBORO AND BARCLAY BY 230 AM EST...
LAT...LON 3872 7626 3867 7635 3877 7640 3887 7625
3881 7621 3883 7620 3894 7624 3883 7637
3895 7637 3904 7632 3899 7627 3900 7618
3914 7629 3932 7619 3938 7606 3947 7601
3952 7578 3865 7572 3869 7590 3857 7604
TIME...MOT...LOC 0714Z 253DEG 35KT 3941 7588 3840 7636
$$
HAYES458
WWUS51 KPHI 310726
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
226 AM EST THU JAN 31 2013
MDC011-015-029-035-041-310800-
/O.CON.KPHI.SV.W.0001.000000T0000Z-130131T0800Z/
CECIL MD-KENT MD-CAROLINE MD-QUEEN ANNE'S MD-TALBOT MD-
226 AM EST THU JAN 31 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM EST
FOR TALBOT...QUEEN ANNE'S...CAROLINE...EASTERN KENT AND SOUTHEASTERN
CECIL COUNTIES...
AT 223 AM EST...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM WARWICK TO 19 MILES SOUTH OF
OXFORD...OR ALONG A LINE EXTENDING FROM 17 MILES SOUTH OF NEWARK TO 8
MILES EAST OF COVE POINT...MOVING EAST AT 40 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
TEMPLEVILLE...WINDYHILL...TANYARD AND RIDGELY BY 235 AM EST...
HENDERSON...GOLDSBORO...WINDYHILL AND GREENSBORO BY 240 AM EST...
PRESTON AND DENTON BY 245 AM EST...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...HEAVY RAIN WILL OCCUR
WITH THESE STORMS AND CAUSE LOW-LYING AND POOR DRAINAGE FLOODING.
THIS SEVERE THUNDERSTORM MAY CONTAIN LITTLE OR NO LIGHTNING. DO NOT
WAIT FOR THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE
A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 3869 7590 3858 7604 3862 7611 3868 7620
3884 7620 3947 7601 3952 7578 3865 7572
TIME...MOT...LOC 0726Z 253DEG 35KT 3944 7573 3843 7622
$$
HAYES620
WWUS51 KPHI 310753
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
253 AM EST THU JAN 31 2013
MDC011-015-029-035-041-310803-
/O.EXP.KPHI.SV.W.0001.000000T0000Z-130131T0800Z/
CECIL MD-KENT MD-CAROLINE MD-QUEEN ANNE'S MD-TALBOT MD-
253 AM EST THU JAN 31 2013
...THE SEVERE THUNDERSTORM WARNING FOR TALBOT...QUEEN ANNE'S...
CAROLINE...EASTERN KENT AND SOUTHEASTERN CECIL COUNTIES WILL EXPIRE
AT 300 AM EST...
THE LINE OF THUNDERSTORMS THAT PROMPTED THE WARNING HAS EXITED THE
AREA.
LAT...LON 3869 7590 3858 7604 3862 7611 3868 7620
3884 7620 3947 7601 3952 7578 3865 7572
TIME...MOT...LOC 0753Z 253DEG 35KT 3950 7539 3850 7590
$$
HAYESThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 30, 7:38 PM EST | Special Weather Statement | PHI | Cecil | 67 min |
| Jan 30, 8:15 PM EST | Special Weather Statement | PHI | Cecil, Kent, Queen Anne's | 60 min |
| Jan 30, 9:12 PM EST | Special Weather Statement | PHI | Cecil, Kent, Queen Anne's | 2 hr |
| Jan 30, 9:55 PM EST | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 12 hr |
| Jan 31, 12:57 AM EST | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 2 hr |
| Jan 31, 2:06 AM EST | Areal Flood Advisory | PHI | Cecil | 4 hr |
| Jan 31, 6:01 AM EST | Wind Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 12 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2013Every severe thunderstorm warning in 2013
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.