Alert archive / Maryland / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 178, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 2, 2009, 12:10 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 65 min. 1 report 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
- Aug 2, 2009, 12:10 PM EDT (16:10 UTC)
- Expired
- Aug 2, 2009, 1:15 PM EDT
- In force
- 65 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Caroline County, MD, Talbot County, MD
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 2, 12:45 PM EDT | TSTM WND DMG | Federalsburg, MD | TREES DOWN. |
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 12:00Z, 4.2 hours before the alert went out and 111 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
- 633 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 689 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 021610
SVRPHI
MDC011-041-021745-
/O.NEW.KPHI.SV.W.0178.090802T1610Z-090802T1745Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1210 PM EDT SUN AUG 2 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
TALBOT COUNTY IN EASTERN MARYLAND...
THIS INCLUDES THE CITY OF EASTON...
* UNTIL 145 PM EDT
* AT 1209 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
TILGHMAN ISLAND...AND MOVING EAST AT 20 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
OXFORD AROUND 1230 PM EDT...
HAMBLETON...TRAPPE AND EASTON AROUND 1250 PM EDT...
WINDYHILL AROUND 100 PM EDT...
WINDYHILL...CHOPTANK AND TANYARD AROUND 105 PM EDT...
PRESTON AROUND 115 PM EDT...
HARMONY AROUND 120 PM EDT...
LAT...LON 3868 7619 3867 7621 3873 7625 3869 7636
3875 7635 3877 7638 3876 7635 3883 7631
3887 7625 3884 7625 3882 7621 3886 7619
3890 7610 3892 7573 3865 7572 3869 7583
3869 7590 3867 7595 3857 7604
TIME...MOT...LOC 1610Z 264DEG 17KT 3868 7630
$$
IOVINO1 follow-up statement
000
WWUS51 KPHI 021715
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
115 PM EDT SUN AUG 2 2009
MDC011-041-021725-
/O.CAN.KPHI.SV.W.0178.000000T0000Z-090802T1745Z/
CAROLINE MD-TALBOT MD-
115 PM EDT SUN AUG 2 2009
...THE SEVERE THUNDERSTORM WARNING FOR TALBOT AND SOUTHERN CAROLINE
COUNTIES IS CANCELLED...
THE STRONGEST THUNDERSTORMS HAVE MOVED TO THE EAST AND SOUTHEAST OF
TALBOT COUNTY AND CAROLINE COUNTY.
LAT...LON 3868 7619 3867 7621 3873 7625 3869 7636
3875 7635 3877 7638 3876 7635 3883 7631
3887 7625 3884 7625 3882 7621 3886 7619
3890 7610 3892 7573 3865 7572 3869 7583
3869 7590 3867 7595 3857 7604
TIME...MOT...LOC 1715Z 264DEG 17KT 3871 7591
$$
IOVINOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 2:19 AM EDT | Flash Flood Watch | PHI | Cecil | 13 hr |
| Aug 2, 10:08 AM EDT | Flash Flood Warning | PHI | Cecil | 9 hr |
| Aug 2, 10:08 AM EDT | Severe Thunderstorm Warning | PHI | Cecil | 67 min |
| Aug 2, 10:32 AM EDT | Tornado Warning | PHI | Cecil | 28 min |
| Aug 2, 10:39 AM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 96 min |
| Aug 2, 12:13 PM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 3 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2009Every severe thunderstorm warning in 2009
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.