Alert archive / Alabama / Fire Weather Watches in 2011

Fire Weather Watch 52, NWS Mobile, AL

November 16, 201110 counties in Alabama

NWS Mobile, AL issued this fire weather watch at Nov 16, 2011, 2:33 PM CST for 10 counties in Alabama. It took effect at Nov 17, 2011, 10:00 AM CST. It was in force for .

The area

The counties it named.

The facts

Issued
Nov 16, 2011, 2:33 PM CST (20:33 UTC)
In effect from
Nov 17, 2011, 10:00 AM CST
Expired
Nov 17, 2011, 5:52 AM CST
In force
Issued by
NWS Mobile, AL

Counties Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL

The radar

The Mobile radar (KMOB), 138 km from the middle of the area, began a volume at 20:36 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

Birmingham, AL (KBMX), launched 12:00Z, 8.6 hours before the alert went out and 182 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, Birmingham, AL at 12:00Z on 2011-11-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 990 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2011-11-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.19395878Sfc1 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
990 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
497 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
197 m²/s²
Significant tornado parameter
1.0
Supercell composite
3.6

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Mobile, AL wrote its last area forecast discussion before this fire weather watch went out at Nov 16, 2:10 PM CST, 23 minutes earlier.

Area forecast discussion, Nov 16, 2:10 PM CST, 23 minutes before
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Hazardous weather outlook, Nov 16, 5:45 AM CST, 8 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOBILE AL
545 AM CST WED NOV 16 2011

ALZ051>064-FLZ001>006-GMZ630-650-655-670-675-MSZ067-075-076-078-
079-171200-
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-MOBILE BAY-
COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA MS OUT 20 NM-
COASTAL WATERS FROM DESTIN TO PENSACOLA FL OUT 20 NM-
WATERS FROM PENSACOLA FL TO PASCAGOULA MS FROM 20 TO 60 NM-
WATERS FROM DESTIN TO PENSACOLA FL FROM 20 TO 60 NM-WAYNE-PERRY-
GREENE-STONE-GEORGE-
545 AM CST WED NOV 16 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF INTERIOR
SOUTHEAST MISSISSIPPI...SOUTHWEST AND SOUTH CENTRAL ALABAMA...THE
WESTERN FLORIDA PANHANDLE AND THE ADJACENT GULF COASTAL WATERS OF
ALABAMA AND NORTHWEST FLORIDA.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT WILL BE APPROACHING THE REGION FROM THE WEST THIS
MORNING...MOVING ACROSS THE WESTERN SECTIONS OF THE FORECAST AREA
THIS AFTERNOON AND THEN ON TO THE EAST OF THE FORECAST AREA BY
MIDNIGHT TONIGHT. THERE IS A SLIGHT CHANCE OF SEVERE WEATHER OVER
PARTS OF REGION TODAY...INITIALLY OVER INTERIOR SOUTHEAST
MISSISSIPPI AND SOUTHWEST ALABAMA...TRANSITIONING EAST INTO SOUTH
CENTRAL ALABAMA AND THE WESTERN FLORIDA PANHANDLE THIS AFTERNOON.
SCATTERED THUNDERSTORMS HAVE BEEN DEVELOPING AND MOVING NORTHEAST
JUST TO THE WEST OF OUR INTERIOR SOUTHEAST MISSISSIPPI COUNTIES.
SEVERAL OF THESE STORMS HAVE SHOWN SIGNS OF ROTATION...AND THERE
HAVE BEEN SEVERAL REPORTS OF TORNADOES AND/OR WIND DAMAGE JUST TO
THE WEST OF THE AREA THIS MORNING. THIS ACTIVITY WILL BE MOVING INTO
OUR INTERIOR SOUTHEAST MISSISSIPPI COUNTIES BETWEEN 6 AM AND 7 AM
THIS MORNING...AND THEN CONTINUE EAST INTO SOUTHWEST ALABAMA LATER
IN THE MORNING. A TORNADO WATCH IS IN EFFECT FOR ALL OF OUR
MISSISSIPPI COUNTIES AS WELL AS CHOCTAW...WASHINGTON AND CLARKE
COUNTIES OF ALABAMA THROUGH 10 AM. WHILE THE THREAT FOR WIDESPREAD
SEVERE WEATHER APPEARS TO BE MINIMAL...ATMOSPHERIC PROFILES INDICATE
ENOUGH LOLVL SHEAR THROUGH AROUND 10 AM THIS MORNING FOR SOME OF THE
THUNDERSTORMS TO PRODUCE AN ISOLATED TORNADO AND POSSIBLY SOME SMALL
HAIL. AFTER SUNRISE...AS TEMPERATURES WARM...THE AIRMASS WILL BECOME
MORE UNSTABLE...BUT ATMOSPHERIC PROFILES INDICATE THAT THE LOW LEVEL
SHEAR THAT HAS AIDED IN THE DEVELOPMENT OF THE ROTATING STORMS EARLY
THIS MORNING WILL BECOME MORE UNIDIRECTIONAL BY AROUND MID
MORNING...LESSENING THE TORNADO THREAT BY LATE MORNING. SCATTERED TO
NUMEROUS SHOWERS AND STORMS...MOSTLY BELOW SEVERE LIMITS BUT SOME
STILL STRONG...WILL CONTINUE TO PROGRESS EAST ACROSS THE CENTRAL AND
EASTERN PORTIONS OF THE FORECAST AREA THROUGH THE AFTERNOON HOURS.

A MODERATE ONSHORE FLOW AHEAD OF THE FRONT WILL BRING POTENTIALLY
HAZARDOUS CONDITIONS TO THE MARINE AREA THROUGH THIS AFTERNOON. A
STRONG OFFSHORE FLOW WILL DEVELOP IN THE WAKE OF THE FRONT TONIGHT
BRINGING HAZARDOUS CONDITIONS FOR SMALL CRAFT. A SMALL CRAFT
ADVISORIES WILL LIKELY BE ISSUED FOR THE ENTIRE MARINE AREA LATER
TODAY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

HAZARDOUS MARINE CONDITIONS WILL CONTINUE OVER THE COASTAL WATERS
THURSDAY AND THURSDAY NIGHT AS A STRONG OFFSHORE FLOW AND BUILDING
SEAS CONTINUE IN THE WAKE OF THE FRONT. NORTHERLY FLOW WILL BECOME
MORE EASTERLY AND DIMINISH SLIGHTLY LATE IN THE WEEK AS HIGH
PRESSURE MOVES ACROSS THE SOUTHEASTERN STATES AND THEN OFF THE MID
ATLANTIC COAST BY THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

THE ACTIVATION OF SKYWARN SEVERE STORM SPOTTER NETWORKS MAY BE
NEEDED THIS MORNING.

In the hours before

Local storm report, Nov 16, 10:55 AM CST, 3 hours 38 minutes before
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Local storm report, Nov 16, 1:47 PM CST, 46 minutes before
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The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 16, 6:37 AM CSTTornado WarningMOBChoctaw34 min
Nov 16, 7:35 AM CSTTornado WarningMOBWashington40 min
Nov 16, 8:27 AM CSTTornado WarningMOBChoctaw, Clarke63 min
Nov 16, 9:13 AM CSTTornado WarningMOBClarke, Monroe, Washington47 min
Nov 16, 9:29 AM CSTTornado WarningMOBClarke, Monroe, Wilcox37 min
Nov 16, 9:51 AM CSTSpecial Marine WarningMOB114 min
Nov 16, 10:26 AM CSTSpecial Marine WarningMOB2 hr
Nov 16, 10:35 AM CSTSevere Thunderstorm WarningMOBButler, Conecuh, Crenshaw, Monroe, Wilcox55 min
Nov 16, 10:39 AM CSTTornado WarningMOBButler, Crenshaw, Monroe, Wilcox55 min
Nov 16, 10:48 AM CSTSmall Craft AdvisoryMOB46 hr
Nov 16, 11:45 AM CSTSpecial Marine WarningMOB2 hr
Nov 16, 1:02 PM CSTSpecial Marine WarningMOB97 min

Nearby

Fire Weather Watches in Alabama, 2011Fire Weather Watches in Florida, 2011Every fire weather watch 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.