Alert archive / Maryland / Tornado Warnings in 2012
Tornado Warning 41, NWS Baltimore/Washington
NWS Baltimore/Washington issued this tornado warning at Sep 8, 2012, 4:06 PM EDT for Anne Arundel County, Prince George's County, Maryland. It was in force for 39 min. 5 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
- Sep 8, 2012, 4:06 PM EDT (20:06 UTC)
- Expired
- Sep 8, 2012, 4:45 PM EDT
- In force
- 39 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
Counties Anne Arundel County, MD, Prince George's County, MD
The radar
The Sterling radar (KLWX), 84 km from the middle of the area, began a volume at 20:05 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 |
|---|---|---|---|
| Sep 8, 4:09 PM EDT | TSTM WND GST 58 | 2 W Glenn Dale, MD | |
| Sep 8, 4:14 PM EDT | TSTM WND DMG | 2 Se Bowie, MD | TREE DOWN IN ROADWAY AT US 301 NORTH AT COLLINGTON RD |
| Sep 8, 4:19 PM EDT | TSTM WND DMG | 1 Ese Bowie, MD | TREE NEAR THE US 50 AND US 301 NORTH INTERCHANGE. |
| Sep 8, 4:25 PM EDT | TSTM WND DMG | 3 Se Davidsonville, MD | TREE DOWN AT RT 2 AND JORDAN TAYLOR LN |
| Sep 8, 4:29 PM EDT | TSTM WND DMG | 1 Ssw Riva, MD | SIX-INCH DIAMETER TREE DOWN BLOCKING ROAD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 8, 12:15 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.1 hours before the alert went out and 77 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
- 252 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
515
WFUS51 KLWX 082006
TORLWX
MDC003-033-082045-
/O.NEW.KLWX.TO.W.0041.120908T2006Z-120908T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
406 PM EDT SAT SEP 8 2012
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
* TORNADO WARNING FOR...
EASTERN PRINCE GEORGES COUNTY IN CENTRAL MARYLAND...
CENTRAL ANNE ARUNDEL COUNTY IN CENTRAL MARYLAND...
* UNTIL 445 PM EDT
* AT 405 PM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS NEAR MITCHELLVILLE...OR NEAR BOWIE...AND WAS MOVING
EAST AT 30 MPH.
* LOCATIONS IMPACTED INCLUDE...
PRINCE GEORGES STADIUM...
BOWIE...
LONDONTOWNE...
PAROLE...
RHODE RIVER...
ANNAPOLIS...
MAYO...
SOUTH RIVER...
GALESVILLE...
SHADY SIDE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING AND AVOID WINDOWS. IF OUTDOORS OR IN A MOBILE HOME OR
VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT...EITHER PARK AND STAY IN YOUR VEHICLE...OR ABANDON YOUR
VEHICLE AND LAY FLAT IN A LOW SPOT.
THIS TORNADO MAY BE WRAPPED IN RAIN AND HARD TO SEE. TAKE COVER NOW.
&&
LAT...LON 3898 7642 3899 7644 3897 7645 3897 7646
3895 7644 3891 7645 3887 7650 3884 7648
3880 7650 3893 7687 3900 7685 3900 7642
TIME...MOT...LOC 2007Z 285DEG 27KT 3896 7680
$$
GMS3 follow-up statements
970
WWUS51 KLWX 082015
SVSLWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
415 PM EDT SAT SEP 8 2012
MDC003-033-082045-
/O.CON.KLWX.TO.W.0041.000000T0000Z-120908T2045Z/
PRINCE GEORGES MD-ANNE ARUNDEL MD-
415 PM EDT SAT SEP 8 2012
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR ANNE
ARUNDEL AND PRINCE GEORGES COUNTIES...
AT 414 PM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR PRINCE GEORGES STADIUM...AND WAS MOVING EAST AT 40
MPH.
LOCATIONS IMPACTED INCLUDE...
DAVIDSONVILLE...
RIVA...
HARWOOD...
EDGEWATER...
WEST RIVER...
MAYO...
SOUTH RIVER...
RHODE RIVER...
GALESVILLE...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING AND AVOID WINDOWS. IF OUTDOORS OR IN A MOBILE HOME OR
VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT...EITHER PARK AND STAY IN YOUR VEHICLE...OR ABANDON YOUR
VEHICLE AND LAY FLAT IN A LOW SPOT.
THIS TORNADO MAY BE WRAPPED IN RAIN AND HARD TO SEE. DO NOT WAIT TO
SEE OR HEAR THE TORNADO. TAKE COVER NOW.
&&
LAT...LON 3880 7650 3891 7675 3898 7673 3900 7642
3898 7642 3899 7644 3897 7645 3897 7646
3895 7644 3891 7645 3887 7650 3884 7648
TIME...MOT...LOC 2015Z 285DEG 37KT 3893 7668
$$
GMS708
WWUS51 KLWX 082029
SVSLWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
429 PM EDT SAT SEP 8 2012
MDC033-082039-
/O.CAN.KLWX.TO.W.0041.000000T0000Z-120908T2045Z/
PRINCE GEORGES MD-
429 PM EDT SAT SEP 8 2012
...THE TORNADO WARNING IS CANCELLED FOR PRINCE GEORGES COUNTY...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS EXITED THE WARNED
AREA. THUS THE TORNADO WARNING HAS BEEN CANCELLED.
LAT...LON 3880 7650 3885 7660 3895 7659 3897 7646
3895 7644 3891 7645 3887 7650 3884 7648
TIME...MOT...LOC 2029Z 285DEG 37KT 3889 7652
$$
MDC003-082045-
/O.CON.KLWX.TO.W.0041.000000T0000Z-120908T2045Z/
ANNE ARUNDEL MD-
429 PM EDT SAT SEP 8 2012
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR ANNE
ARUNDEL COUNTY...
AT 428 PM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR MAYO...OR NEAR RHODE RIVER...AND WAS MOVING EAST AT
45 MPH.
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING AND AVOID WINDOWS. IF OUTDOORS OR IN A MOBILE HOME OR
VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
THIS TORNADO MAY BE WRAPPED IN RAIN AND HARD TO SEE. DO NOT WAIT TO
SEE OR HEAR THE TORNADO. TAKE COVER NOW.
&&
LAT...LON 3880 7650 3885 7660 3895 7659 3897 7646
3895 7644 3891 7645 3887 7650 3884 7648
TIME...MOT...LOC 2029Z 285DEG 37KT 3889 7652
$$
GMS574
WWUS51 KLWX 082037
SVSLWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
437 PM EDT SAT SEP 8 2012
MDC003-082048-
/O.EXP.KLWX.TO.W.0041.000000T0000Z-120908T2045Z/
ANNE ARUNDEL MD-
437 PM EDT SAT SEP 8 2012
...THE TORNADO WARNING WILL EXPIRE AT 445 PM EDT FOR ANNE ARUNDEL
COUNTY...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS EXITED THE WARNED
AREA. THUS THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 3880 7650 3885 7660 3895 7659 3897 7646
3895 7644 3891 7645 3887 7650 3884 7648
TIME...MOT...LOC 2038Z 285DEG 37KT 3887 7640
$$
GMSThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 12:02 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 43 min |
| Sep 8, 12:22 PM EDT | Special Weather Statement | LWX | Washington | 23 min |
| Sep 8, 12:35 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 40 min |
| Sep 8, 12:47 PM EDT | Tornado Warning | LWX | Washington | 16 min |
| Sep 8, 1:09 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 66 min |
| Sep 8, 2:02 PM EDT | Special Weather Statement | LWX | Baltimore | 58 min |
| Sep 8, 2:10 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Harford, Howard, Montgomery | 80 min |
| Sep 8, 2:47 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 58 min |
| Sep 8, 3:18 PM EDT | Special Weather Statement | LWX | Anne Arundel, Montgomery, Prince George's | 87 min |
| Sep 8, 3:22 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Charles, Howard, Montgomery, Prince George's | 68 min |
| Sep 8, 3:27 PM EDT | Special Weather Statement | LWX | Harford | 33 min |
| Sep 8, 3:53 PM EDT | Tornado Warning | LWX | Montgomery, Prince George's | 15 min |
| Sep 8, 3:58 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Calvert, Charles, Howard, Montgomery and 3 more | 55 min |
| Sep 8, 4:25 PM EDT | Special Weather Statement | LWX | Kent | 20 min |
Nearby
Tornado Warnings in Maryland, 2012Every tornado warning in 2012Tornadoes 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.