Alert archive / New Hampshire / Flash Flood Warnings in 1993

Flash Flood Warning 12, NWS Gray, ME

April 12, 1993Merrimack County, New Hampshire

NWS Gray, ME issued this flash flood warning at Apr 12, 1993, 2:30 PM EDT for Merrimack County, New Hampshire. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Apr 12, 1993, 2:30 PM EDT (18:30 UTC)
Expired: Apr 12, 1993, 10:30 PM EDT
In force: 8 hr
Issued by: NWS Gray, ME
Area: Whole counties

County Merrimack County, NH

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 6.5 hours before the alert went out and 132 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 517 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Apr 12, 11:10 AM EDT, 3 hours 20 minutes before

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Special weather statement, Apr 12, 11:11 AM EDT, 3 hours 19 minutes before

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Special weather statement, Apr 12, 2:05 PM EDT, 25 minutes before

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Special weather statement, Apr 12, 2:10 PM EDT, 20 minutes before

MEZ003-004-006>014-501-122115-

SHORT TERM FORECAST FOR CENTRAL AND SOUTHERN MAINE
NATIONAL WEATHER SERVICE PORTLAND, ME
210 PM EDT MON APR 12 1993

...FLOOD WARNINGS REMAIN IN EFFECT FOR THE ANDROSCOGGIN...KENNEBEC...
AND PISCATIQUIS RIVERS IN MAINE...

AT 2 PM...THE PORTLAND RADAR SHOWED LIGHT RAIN WITH SCATTERED MODERATE RAIN
MOVING FROM EAST TO WEST ACROSS SOUTHERN MAINE.  TEMPERATURES RANGED FROM
42 DEGREES AT ROCKLAND TO 48 AT BRUNSWICK.  WINDS WERE NORTH AND NORTHEASTERLY
FROM 8 MILES PER HOUR AT BAR HARBOR TO 17 AT AUGUSTA.  SANFORD REPORTED A
GUST TO 20 MILES PER HOUR.  A FEW AREAS OF FOG REDUCED THE VISIBILITY DOWN
TO A MILE OR LESS.  AUGUSTA REPORTED A VISIBILITY OF 3/4 MILES.

FOR THE NEXT 2 TO 3 HOURS...THERE WILL BE ONLY MINOR CHANGES IN PRECIPITATION
...TEMPERATURES AND WINDS.

JLT

Special weather statement, Apr 12, 2:12 PM EDT, 18 minutes before

MEZ003-004-006>014-501-122115-

SHORT TERM FORECAST FOR CENTRAL AND SOUTHERN MAINE
NATIONAL WEATHER SERVICE PORTLAND, ME
210 PM EDT MON APR 12 1993

...FLOOD WARNINGS REMAIN IN EFFECT FOR THE ANDROSCOGGIN...KENNEBEC...
AND PISCATIQUIS RIVERS IN MAINE...

AT 2 PM...THE PORTLAND RADAR SHOWED LIGHT RAIN WITH SCATTERED MODERATE RAIN
MOVING FROM EAST TO WEST ACROSS SOUTHERN MAINE.  TEMPERATURES RANGED FROM
42 DEGREES AT ROCKLAND TO 48 AT BRUNSWICK.  WINDS WERE NORTH AND NORTHEASTERLY
FROM 8 MILES PER HOUR AT BAR HARBOR TO 17 AT AUGUSTA.  SANFORD REPORTED A
GUST TO 20 MILES PER HOUR.  A FEW AREAS OF FOG REDUCED THE VISIBILITY DOWN
TO A MILE OR LESS.  AUGUSTA REPORTED A VISIBILITY OF 3/4 MILES.

FOR THE NEXT 2 TO 3 HOURS...THERE WILL BE ONLY MINOR CHANGES IN PRECIPITATION
...TEMPERATURES AND WINDS.

JLT

The office that day

Everything else NWS Gray, ME issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 12, 6:55 PM EDT	Flash Flood Warning	GYX	Cumberland	8 hr

Nearby

Flash Flood Warnings in New Hampshire, 1993 Every flash flood warning in 1993

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.