Alert archive / Vermont / Special Weather Statements in 2011
Special Weather Statement, NWS Burlington, VT
NWS Burlington, VT issued this special weather statement at Sep 5, 2011, 4:16 PM EDT for Chittenden County, Lamoille County, Vermont. It was in force for 104 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 5, 2011, 4:16 PM EDT (20:16 UTC)
- Expired
- Sep 5, 2011, 6:00 PM EDT
- In force
- 104 min
- Issued by
- NWS Burlington, VT
Counties Chittenden County, VT, Lamoille County, VT
The radar
The Burlington radar (KCXX), 5 km from the middle of the area, began a volume at 20:20 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
Brookhaven, NY (KOKX), launched 12:00Z, 8.3 hours before the alert went out and 405 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
- 116 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 704 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Burlington, VT wrote its last area forecast discussion before this special weather statement went out at Sep 4, 6:45 PM EDT, 21 hours 31 minutes earlier.
Area forecast discussion, Sep 4, 6:45 PM EDT, 21 hours 31 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BURLINGTON VT
ISSUED BY NATIONAL WEATHER SERVICE ALBANY NY
645 PM EDT SUN SEP 4 2011
.SYNOPSIS...
A SLOW MOVING COLD FRONT WILL MOVE INTO NORTHERN NEW YORK LATE TONIGHT
AND WILL CONTINUE TO MOVE SLOWLY EAST INTO VERMONT ON MONDAY...AND
THEN MOVE THROUGH VERMONT BY MONDAY NIGHT. THIS SLOW MOVING FRONT WILL
MOVE THROUGH VERMONT MONDAY NIGHT. THIS SLOW MOVING FRONT WILL
BRING PERIODS OF HEAVY RAIN TO THE NORTH COUNTRY OVERNIGHT THROUGH
MONDAY NIGHT. A RIDGE OF HIGH PRESSURE WILL BUILD INTO THE REGION
TUESDAY AND WEDNESDAY.
&&
.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
AS OF 621 PM EDT SUNDAY...MODEL GUIDANCE SHOWING HEAVIER RAINFALL
WILL MOVE INTO NORTHERN NEW YORK AFTER MIDNIGHT TONIGHT. WILL GO
WITH LIKELY TO CATEGORICAL POPS ACROSS THE REGION OVERNIGHT.
PRECIPITABLE WATER VALUES AROUND 2 INCHES. HAVE ADDED ENHANCED
WORDING TO THE ZONE FORECASTS FOR GUSTY WINDS...SMALL HAIL AND
HEAVY RAINFALL AS THE REGION IS UNDER SEVERE THUNDERSTORM WATCH
UNTIL 11 PM EDT. HAVE LEANED TOWARD THE WARMER GFS LAMP GUIDANCE
FOR OVERNIGHT MIN TEMPERATURES.
&&
.SHORT TERM /6 AM MONDAY MORNING THROUGH TUESDAY/...
AS OF 641 PM EDT SUNDAY...THE COLD FRONT WILL MOVE SLOWLY THROUGH
THE REGION ON MONDAY WITH HEAVIER RAINFALL MOVING FROM NORTHERN
NEW YORK INTO NORTHERN VERMONT MONDAY MORNING...AND THEN INTO
SOUTHERN VERMONT BY MONDAY AFTERNOON. PRECIPITABLE WATER VALUES
RUNNING FROM 1.5 TO 2 INCHES...SO PLENTY OF MOISTURE AVAILABLE.
SATELLITE LOOP ALSO SHOWING PLENTY OF MOISTURE BEING PULLED
NORTHEAST FROM TROPICAL STORM LEE. GFS AND ECMWF MODELS IN GOOD
AGREEMENT IN TAPERING OFF THE RAIN FROM THE SAINT LAWRENCE VALLEY
IN NORTHERN NEW YORK TO VERMONT AFTER MIDNIGHT MONDAY NIGHT. BASED
ON GFS AND ECMWF MODELS HAVE GONE WITH A DRY FORECAST FOR TUESDAY
AND TUESDAY NIGHT AS A RIDGE OF HIGH PRESSURE BUILDS EAST FROM THE
GREAT LAKES.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
AS OF 900 AM EDT SUNDAY...HAVE UPDATED THE EXTENDED GRIDS THIS
MORNING...ANTICIPATING BUSY AFTERNOON AND POSSIBILITY THAT WE
WILL HAVE TO SKIP THE EXTENDED UPDATE THIS AFTERNOON. SURFACE
HIGH PRESSURE WILL BE OVER THE NORTH COUNTRY TUESDAY NIGHT AND
WILL SLIDE OFF THE COAST ON WEDNESDAY. ECMWF AND GFS CONTINUE TO
HANDLE TS KATIA DIFFERENTLY FOR THE SECOND HALF OF THE WEEK. GFS
MOVES THE STORM FASTER ALONG THE EAST COAST AND THEN OUTSIDE THE
BENCHMARK ON FRIDAY NIGHT. ECMWF CONTINUES TO BE MUCH
SLOWER...HOLDING KATIA STILL OFF THE COAST OF NORTH CAROLINA ON
SATURDAY...THEN SLOWLY ALONG THE EAST COAST AND OUTSIDE THE
BENCHMARK ON MONDAY. HAVE MENTIONED CHANCE POPS ACROSS OUR
SOUTHERN ZONES FOR TUESDAY NIGHT THROUGH WEDNESDAY AS MOISTURE
SPREADS NORTH AHEAD OF APPROACHING KATIA AND ASSOCIATED WITH A
SECOND WEAKER SURFACE LOW OVER THE OHIO VALLEY. THE FORECAST IS
DRY FROM THURSDAY ONWARD AT THIS TIME. ANY OF THIS EXTENDED
PORTION OF THE FORECAST COULD CHANGE DRASTICALLY DUE TO TRACK OF
KATIA.
&&
.AVIATION /00Z MONDAY THROUGH FRIDAY/...
THROUGH 18Z MONDAY...VFR CONDITIONS WILL LOWER TO WIDESPREAD MVFR
WITH SCATTERED IFR THIS EVENING AND THROUGH MONDAY. INITIAL AREA
OF SHOWERS AND THUNDERSTORMS HAS EXITED THE REGION LEAVING SCATTERED TO
BROKEN CLOUDS WITH VFR CEILINGS. ADDITIONAL SHOWERS AND
THUNDERSTORMS ARE EXPECTED TO DEVELOP BETWEEN 19-23Z AND
EVENTUALLY TRANSITION INTO A STEADY RAIN LATE TONIGHT. FEEL THAT
THE GREATEST COVERAGE WILL BE FROM THE ADIRONDACKS EASTWARD.
GENERALLY VFR WITH SCATTERED MVFR/IFR IN
SHS/TSTORMS...TRANSITIONING TO WIDESPREAD MVFR VISIBILITIES AND
CEILINGS IN STEADY RAIN OVERNIGHT. SOME OF THE STRONGER
THUNDERSTORMS MAY PRODUCE GUSTY WINDS AND HAIL THIS EVENING.
OUTLOOK 18Z MONDAY THROUGH FRIDAY...
18Z MONDAY THROUGH 12Z TUESDAY...PRIMARILY MVFR WITH PERIODS OF
IFR IN RAIN AND THUNDERSTORMS WITH SLOW MOVING FRONTAL SYSTEM. 12Z
TUESDAY THROUGH FRIDAY...VFR UNDER BUILDING HIGH PRESSURE.
&&
.HYDROLOGY...
AS OF 621 PM EDT SUNDAY...STILL LOOKING AT 1 TO 3 INCHES OF
RAINFALL FROM TONIGHT THROUGH EARLY TUEDAY MORNING WITH SOME
AMOUNTS UP TO 4 INCHES POSSIBLE. SATELLITE LOOP ALSO SHOWING
PLENTY OF MOISTURE MOVING NORTHEAST FROM THE REMNANTS OF TROPICAL
STORM LEE.
&&
.EQUIPMENT...
WFO BTV IS HAVING COMMUNICATIONS PROBLEMS IN GETTING PRODUCTS OUT.
ALY IS ASSISTING WITH EMERGENCY BACKUP INTO THIS EVENING.
&&
.BTV WATCHES/WARNINGS/ADVISORIES...
VT...FLASH FLOOD WATCH THROUGH TUESDAY MORNING FOR VTZ001>012-
016>019.
NY...FLASH FLOOD WATCH THROUGH TUESDAY MORNING FOR NYZ026>031-034-
035-087.
&&
SYNOPSIS...WGH
NEAR TERM...WGH
SHORT TERM...WGH
LONG TERM...NEILES
AVIATION...MUCCILLI
HYDROLOGY...WGH
EQUIPMENT...WGH/TAWThe office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 8:06 PM EDT | Areal Flood Warning | BTV | Rutland, Windsor | 5 hr |
| Sep 4, 8:28 PM EDT | Special Weather Statement | BTV | Orleans | 62 min |
| Sep 4, 9:50 PM EDT | Special Weather Statement | BTV | Franklin, Lamoille, Orleans | 55 min |
| Sep 5, 1:27 PM EDT | Special Weather Statement | BTV | Chittenden, Lamoille | 63 min |
| Sep 5, 2:34 PM EDT | Special Weather Statement | BTV | Chittenden, Lamoille | 71 min |
| Sep 5, 3:55 PM EDT | Flash Flood Warning | BTV | Addison, Chittenden, Rutland, Washington, Windsor | 4 hr |
| Sep 5, 6:02 PM EDT | Special Weather Statement | BTV | Chittenden, Lamoille | 2 hr |
Nearby
Special Weather Statements in Vermont, 2011Every special weather statement in 2011
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.