Alert archive / Alabama / Red Flag Warnings in 2013
Red Flag Warning 4, NWS Mobile, AL
NWS Mobile, AL issued this red flag warning at Mar 13, 2013, 5:46 AM CDT for 10 counties in Alabama. It took effect at Mar 13, 2013, 1:00 PM CDT. 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 counties it named.
The facts
- Issued
- Mar 13, 2013, 5:46 AM CDT (10:46 UTC)
- In effect from
- Mar 13, 2013, 1:00 PM CDT
- Expired
- Mar 13, 2013, 6:00 PM CDT
- In force
- 5 hr
- 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 10:43 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 00:00Z, 10.8 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2353 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- -53 m²/s²
- 0-3 km storm-relative helicity
- -85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
922 WWUS84 KMOB 131046 RFWMOB URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOBILE AL 546 AM CDT WED MAR 13 2013 ...RED FLAG WARNING IN EFFECT FOR SOUTH CENTRAL AND SOUTHWEST ALABAMA FROM 1 PM TO 6 PM CDT THIS AFTERNOON FOR LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITY... ...RED FLAG WARNING IN EFFECT FOR INLAND AND COASTAL PORTIONS OF THE WESTERN FLORIDA PANHANDLE FROM 1 PM TO 6 PM CDT THIS AFTERNOON FOR THE COMBINATION OF CRITICALLY LOW RELATIVE HUMIDITY...20 FOOT WIND SPEEDS AROUND 15 MPH...AND ERC VALUES AROUND 30... ...FIRE WEATHER WATCH FOR PORTIONS OF SOUTH CENTRAL ALABAMA THURSDAY AFTERNOON FOR THE POTENTIAL OF A LONG DURATION PERIOD OF CRITICALLY LOW RELATIVE HUMIDITY... .HIGH PRESSURE BUILDING FROM THE CENTRAL PLAINS TO THE LOWER MISSISSIPPI VALLEY WILL BRING A MUCH DRIER AIRMASS AND INCREASED NORTHWESTERLY WINDS ACROSS SOUTHWEST AND SOUTH CENTRAL ALABAMA AND THE WESTERN FLORIDA PANHANDLE TODAY. CRITICALLY LOW RELATIVE HUMIDITY FOR AROUND 4 HOURS IS EXPECTED ACROSS SOUTHWEST AND SOUTH CENTRAL ALABAMA...WHILE CRITICALLY LOW RELATIVE HUMIDITY COMBINED WITH BREEZY NORTHWESTERLY WINDS AND ERC VALUES AROUND 30 IS EXPECTED ACROSS THE WESTERN FLORIDA PANHANDLE. THESE CONDITIONS WILL BRING CRITICAL FIRE WEATHER CONDITIONS TO THESE LOCATIONS THIS AFTERNOON. A LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITY WILL BE POSSIBLE OVER PORTIONS OF SOUTH CENTRAL ALABAMA AGAIN THURSDAY AFTERNOON. ALZ056>060-132315- /O.NEW.KMOB.FW.W.0004.130313T1800Z-130313T2300Z/ /O.NEW.KMOB.FW.A.0004.130314T1800Z-130314T2300Z/ CONECUH-BUTLER-CRENSHAW-ESCAMBIA-COVINGTON- 546 AM CDT WED MAR 13 2013 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING FOR SOUTH CENTRAL ALABAMA DUE TO A LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITY... ...FIRE WEATHER WATCH IN EFFECT THURSDAY AFTERNOON FOR SOUTH CENTRAL ALABAMA DUE TO THE POTENTIAL OF A LONG DURATION PERIOD OF CRITICALLY LOW RELATIVE HUMIDITY... THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING. A FIRE WEATHER WATCH HAS ALSO BEEN ISSUED EFFECTIVE THURSDAY AFTERNOON. * AFFECTED AREA...FIRE WEATHER ZONES 056...057...058...059 AND 060. * RELATIVE HUMIDITY: WILL FALL TO 20 TO 24 PERCENT FOR AROUND 4 HOURS THIS AFTERNOON AND AGAIN THURSDAY AFTERNOON. * WINDS: NORTHWEST INCREASING TO AROUND 15 MPH WITH A FEW GUSTS AROUND 20 MPH THIS AFTERNOON. * DISPERSIONS: INCREASING TO AROUND 80 THIS AFTERNOON. * IMPACTS: ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF LOW RELATIVE HUMIDITY...AND DRY FUELS WILL CREATE RAPID FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. && $$ ALZ051>055-061>064-FLZ001>006-132300- /O.NEW.KMOB.FW.W.0004.130313T1800Z-130313T2300Z/ CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-UPPER MOBILE- UPPER BALDWIN-LOWER MOBILE-LOWER BALDWIN-INLAND ESCAMBIA- COASTAL ESCAMBIA-INLAND SANTA ROSA-COASTAL SANTA ROSA- INLAND OKALOOSA-COASTAL OKALOOSA- 546 AM CDT WED MAR 13 2013 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING FOR SOUTHWEST ALABAMA DUE TO A LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITY... ...RED FLAG WARNING IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING FOR INLAND AND COASTAL PORTIONS OF THE WESTERN FLORIDA PANHANDLE FROM 1 PM TO 6 PM CDT THIS AFTERNOON FOR THE COMBINATION OF CRITICALLY LOW RELATIVE HUMIDITY...20 FOOT WIND SPEEDS AROUND 15 MPH...AND ERC VALUES AROUND 30. THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 051...052...053...054... 055...061...062...063 AND 064. FIRE WEATHER ZONES 001...002... 003...004...005 AND 006. * RELATIVE HUMIDITY: WILL FALL TO 20 TO 24 PERCENT FOR AROUND 4 HOURS THIS AFTERNOON. * WINDS: NORTHWEST INCREASING AROUND 15 MPH...WITH A FEW GUSTS AROUND 20 MPH THIS AFTERNOON. * DISPERSIONS: INCREASING TO AROUND 80 THIS AFTERNOON. * ERC: INCREASING TO AROUND 30 IN THE WESTERN FLORIDA PANHANDLE. * IMPACTS: ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF LOW RELATIVE HUMIDITY...AND DRY FUELS WILL CREATE RAPID FIRE GROWTH POTENTIAL. && $$
1 follow-up statement
104 WWUS84 KMOB 131941 RFWMOB URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOBILE AL 241 PM CDT WED MAR 13 2013 ...RED FLAG WARNING IN EFFECT FOR SOUTH CENTRAL AND SOUTHWEST ALABAMA UNTIL 6 PM CDT THIS AFTERNOON FOR LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITY... ...RED FLAG WARNING IN EFFECT FOR THE WESTERN FLORIDA PANHANDLE UNTIL 6 PM CDT THIS AFTERNOON FOR THE COMBINATION OF CRITICALLY LOW RELATIVE HUMIDITY...20 FOOT WIND SPEEDS NEAR 15 MPH...AND ERC VALUES NEAR OR GREATER THAN 26... ...FIRE WEATHER WATCH FOR PORTIONS OF SOUTH CENTRAL ALABAMA THURSDAY AFTERNOON FOR THE POTENTIAL OF A LONG DURATION PERIOD OF CRITICALLY LOW RELATIVE HUMIDITY... .DRY AND COOL HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE REGION THROUGH TONIGHT THEN SHIFT INTO THE NORTHEASTERN GULF THURSDAY INTO FRIDAY. RELATIVE HUMIDITIES WILL DROP BELOW CRITICAL LEVELS FOR A LONG DURATION OVER SOUTHWEST AND SOUTH CENTRAL ALABAMA THIS AFTERNOON...SOUTHEAST MISSISSIPPI...AS WELL AS THE NORTHWEST FLORIDA PANHANDLE. A RED FLAG WARNING CONTINUES FOR THIS AFTERNOON FOR SOUTHWEST AND SOUTH CENTRAL ALABAMA AND IS ALSO IN EFFECT FOR THE NORTHWEST FLORIDA PANHANDLE DUE TO MARGINALLY SUFFICIENT ERC VALUES NEAR OR OVER 26 AND NORTHWESTERLY WINDS OCCASIONALLY NEAR 15 MPH. CURRENT WIND OBSERVATIONS IN SOUTHEAST MISSISSIPPI HAVE REMAINED BELOW CRITICAL LEVELS AND A RED FLAG WARNING IS NOT EXPECTED FOR THIS PORTION THIS AFTERNOON. RELATIVE HUMIDITIES WILL AGAIN DROP BELOW CRITICAL LEVELS FOR A MARGINALLY SUFFICIENT DURATION OVER SOUTH CENTRAL ALABAMA WITH A LONG DURATION BELOW CRITICAL LEVELS OVER THE NORTHWEST FLORIDA PANHANDLE. A FIRE WEATHER WATCH CONTINUES JUST FOR SOUTH CENTRAL ALABAMA HOWEVER AS WINDS WILL BE TOO LIGHT TO SUPPORT A FIRE WEATHER WATCH OVER THE NORTHWEST FLORIDA PANHANDLE WHEN CONSIDERING ERC VALUES LESS THAN 37. AFTERNOON RELATIVE HUMIDITIES WILL DROP BELOW CRITICAL LEVELS OVER THE NORTHWEST FLORIDA PANHANDLE ON FRIDAY BUT WILL NOT SATISFY OTHER REQUIREMENTS. ALZ056>060-141145- /O.CON.KMOB.FW.W.0004.000000T0000Z-130313T2300Z/ /O.CON.KMOB.FW.A.0004.130314T1800Z-130314T2300Z/ CONECUH-BUTLER-CRENSHAW-ESCAMBIA-COVINGTON- 241 PM CDT WED MAR 13 2013 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR SOUTH CENTRAL ALABAMA DUE TO A LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITY... ...FIRE WEATHER WATCH REMAINS IN EFFECT THURSDAY AFTERNOON FOR SOUTH CENTRAL ALABAMA DUE TO THE POTENTIAL OF A LONG DURATION PERIOD OF CRITICALLY LOW RELATIVE HUMIDITY... THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 6 PM CDT THIS EVENING. A FIRE WEATHER WATCH HAS ALSO BEEN ISSUED EFFECTIVE THURSDAY AFTERNOON. * AFFECTED AREA...FIRE WEATHER ZONES 056...057...058...059 AND 060. * RELATIVE HUMIDITY: WILL FALL TO 20 TO 24 PERCENT FOR AROUND 4 HOURS THIS AFTERNOON AND AGAIN THURSDAY AFTERNOON. * WINDS: NORTHWEST WINDS NEAR 15 MPH WITH A FEW GUSTS AROUND 20 MPH THIS AFTERNOON. * DISPERSIONS: INCREASING TO AROUND 80 THIS AFTERNOON. * IMPACTS: ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF LOW RELATIVE HUMIDITY...AND DRY FUELS WILL CREATE RAPID FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. && $$ ALZ051>055-061>064-FLZ001>006-132300- /O.CON.KMOB.FW.W.0004.000000T0000Z-130313T2300Z/ CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-UPPER MOBILE- UPPER BALDWIN-LOWER MOBILE-LOWER BALDWIN-INLAND ESCAMBIA- COASTAL ESCAMBIA-INLAND SANTA ROSA-COASTAL SANTA ROSA- INLAND OKALOOSA-COASTAL OKALOOSA- 241 PM CDT WED MAR 13 2013 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR SOUTHWEST ALABAMA DUE TO A LONG DURATION OF CRITICALLY LOW RELATIVE HUMIDITY... ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR THE WESTERN FLORIDA PANHANDLE FOR THE COMBINATION OF CRITICALLY LOW RELATIVE HUMIDITY...20 FOOT WIND SPEEDS NEAR 15 MPH...AND ERC VALUES OF 26 OR GREATER... THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 6 PM CDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 051...052...053...054... 055...061...062...063 AND 064. FIRE WEATHER ZONES 001...002... 003...004...005 AND 006. * RELATIVE HUMIDITY: WILL FALL TO 20 TO 24 PERCENT FOR AROUND 4 HOURS THIS AFTERNOON. * WINDS: NORTHWEST NEAR 15 MPH...WITH A FEW GUSTS AROUND 20 MPH THIS AFTERNOON. * DISPERSIONS: INCREASING TO AROUND 80 THIS AFTERNOON. * ERC: 26 TO 30 IN THE WESTERN FLORIDA PANHANDLE. * IMPACTS: ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF LOW RELATIVE HUMIDITY...AND DRY FUELS WILL CREATE RAPID FIRE GROWTH POTENTIAL. && $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 11:02 PM CDT | Small Craft Advisory | MOB | 35 hr | |
| Mar 13, 5:46 AM CDT | Fire Weather Watch | MOB | Butler, Conecuh, Covington, Crenshaw, Escambia | 24 hr |
Nearby
Red Flag Warnings in Alabama, 2013Red Flag Warnings in Florida, 2013Every red flag warning in 2013
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.