Alert archive / New Hampshire / Flash Flood Warnings in 2014

Flash Flood Warning 8, NWS Boston/Norton, MA

June 25, 2014Cheshire County, Hillsborough County, New Hampshire

NWS Boston/Norton, MA issued this flash flood warning at Jun 25, 2014, 9:12 PM EDT for Cheshire County, Hillsborough County, New Hampshire. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 25, 2014, 9:12 PM EDT (01:12 UTC)
Expired
Jun 26, 2014, 2:15 AM EDT
In force
5 hr
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Flood severity
None

Counties Cheshire County, NH, Hillsborough County, NH

The radar

The Boston radar (KBOX), 140 km from the middle of the area, began a volume at 01:15 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

Gray, ME (KGYX), launched 00:00Z, 1.2 hours before the alert went out and 154 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.

Skew-T log-pSkew-T log-p diagram, Gray, ME at 00:00Z on 2014-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 166 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Gray, ME at 00:00Z on 2014-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
166 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
644 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

758 
WGUS51 KBOX 260112
FFWBOX
NHC005-011-260315-
/O.NEW.KBOX.FF.W.0008.140626T0112Z-140626T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
912 PM EDT WED JUN 25 2014

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
  NORTHEASTERN CHESHIRE COUNTY IN SOUTHERN NEW HAMPSHIRE...

* UNTIL 1115 PM EDT

* AT 912 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE 
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BEDFORD...GOFFSTOWN...WEARE...PETERBOROUGH...HILLSBOROUGH...NEW
  BOSTON...ANTRIM...MARLBOROUGH...DEERING...GREENFIELD...
  LYNDEBOROUGH...HANCOCK...FRANCESTOWN...BENNINGTON...STODDARD...
  HARRISVILLE...NELSON...ROXBURY AND WINDSOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING IS ISSUED FOR RAPID AND POTENTIALLY LIFE
THREATENING FLOODING. IN URBAN AREAS AVOID FLOODED ROADS AND OBEY
ROAD CLOSURES. THOSE NEAR SMALL STREAMS MUST HEAD FOR HIGHER GROUND
IMMEDIATELY.

&&

LAT...LON 4320 7191 4312 7185 4315 7167 4305 7164
      4306 7154 4296 7153 4293 7219 4313 7203
      4319 7202 4320 7194

$$

NOCERA
3 follow-up statements
171 
WGUS51 KBOX 260301
FFWBOX
NHC005-011-260615-
/O.EXT.KBOX.FF.W.0008.000000T0000Z-140626T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
1101 PM EDT WED JUN 25 2014

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
  NORTHEASTERN CHESHIRE COUNTY IN SOUTHERN NEW HAMPSHIRE...

* UNTIL 215 AM EDT

* AT 1059 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BEDFORD...GOFFSTOWN...WEARE...PETERBOROUGH...HILLSBOROUGH...NEW
  BOSTON...ANTRIM...MARLBOROUGH...DEERING...GREENFIELD...
  LYNDEBOROUGH...HANCOCK...FRANCESTOWN...BENNINGTON...STODDARD...
  HARRISVILLE...NELSON...ROXBURY AND WINDSOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLOODING IS DIFFICULT TO SEE AT NIGHT. HEAD TO HIGHER GROUND
IMMEDIATELY AND DO NOT DRIVE THROUGH FLOODED ROADS. FIND ALTERNATE
ROUTES.

&&

LAT...LON 4320 7191 4312 7185 4315 7167 4305 7164
      4306 7154 4296 7153 4293 7219 4313 7203
      4319 7202 4320 7194

$$

FRANK
529 
WGUS71 KBOX 260447
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1247 AM EDT THU JUN 26 2014

NHC005-011-260615-
/O.CON.KBOX.FF.W.0008.000000T0000Z-140626T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HILLSBOROUGH NH-CHESHIRE NH-
1247 AM EDT THU JUN 26 2014

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM EDT FOR
NORTHWESTERN HILLSBOROUGH AND NORTHEASTERN CHESHIRE COUNTIES...

AT 1245 AM EDT...DOPPLER RADAR INDICATED TORRENTIAL RAIN AND 
EMBEDDED THUNDERSTORMS ACROSS THE WARNED AREA. UP TO THREE AND A 
HALF INCHES OF RAIN HAVE ALREADY FALLEN. AN ADDITIONAL 1 TO 2 INCHES 
OF RAIN IS EXPECTED TO FALL IN THE NEXT HOUR OR SO.  FLASH FLOODING 
IS EXPECTED TO BEGIN SHORTLY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING IS ISSUED FOR RAPID AND POTENTIALLY LIFE
THREATENING FLOODING. IN URBAN AREAS AVOID FLOODED ROADS AND OBEY
ROAD CLOSURES. THOSE NEAR SMALL STREAMS MUST HEAD FOR HIGHER GROUND
IMMEDIATELY.

&&

LAT...LON 4320 7191 4312 7185 4315 7167 4305 7164
      4306 7154 4296 7153 4293 7219 4313 7203
      4319 7202 4320 7194

$$

FRANK
358 
WGUS71 KBOX 260609
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
209 AM EDT THU JUN 26 2014

NHC005-011-260618-
/O.EXP.KBOX.FF.W.0008.000000T0000Z-140626T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HILLSBOROUGH NH-CHESHIRE NH-
209 AM EDT THU JUN 26 2014

...THE FLASH FLOOD WARNING FOR NORTHWESTERN HILLSBOROUGH AND
NORTHEASTERN CHESHIRE COUNTIES WILL EXPIRE AT 215 AM EDT...

THE HEAVY RAIN HAS ENDED...AND ADDITIONAL FLOODING IS NOT EXPECTED. 
PLEASE CONTINUE TO HEED ALL ROAD CLOSURES THAT MAY HAVE OCCURRED 
FROM THE EARLIER HEAVY RAIN. 

LAT...LON 4320 7191 4312 7185 4315 7167 4305 7164
      4306 7154 4296 7153 4293 7219 4313 7203
      4319 7202 4320 7194

$$

FRANK

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 25, 8:12 PM EDTSpecial Weather StatementBOXHillsborough48 min
Jun 25, 8:21 PM EDTFlash Flood WarningBOXCheshire6 hr
Jun 25, 10:12 PM EDTAreal Flood AdvisoryBOXCheshire2 hr
Jun 26, 12:14 AM EDTAreal Flood AdvisoryBOXCheshire, Hillsborough2 hr
Jun 26, 1:56 AM EDTAreal Flood AdvisoryBOXHillsborough2 hr

Nearby

Flash Flood Warnings in New Hampshire, 2014Every flash flood warning in 2014

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.