Alert archive / Mississippi / Excessive Heat Warnings in 2012
Excessive Heat Warning 2, NWS Memphis, TN
NWS Memphis, TN issued this excessive heat warning at Jul 20, 2012, 4:04 AM CDT for 13 counties in Mississippi; 12 counties in Tennessee; 8 counties in Arkansas. It took effect at Jul 20, 2012, 11:00 AM CDT. It was in force for 8 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
- Jul 20, 2012, 4:04 AM CDT (09:04 UTC)
- In effect from
- Jul 20, 2012, 11:00 AM CDT
- Expired
- Jul 20, 2012, 7:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Memphis, TN
All 33 counties
Craighead County, AR, Crittenden County, AR, Cross County, AR, Lee County, AR, Mississippi County, AR, Phillips County, AR, Poinsett County, AR, St. Francis County, AR, Alcorn County, MS, Benton County, MS, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Yalobusha County, MS, Chester County, TN, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Shelby County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 33 km from the middle of the area, began a volume at 09:04 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
Little Rock, AR (KLZK), launched 00:00Z, 9.1 hours before the alert went out and 31 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
- 2260 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 2244 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
302 WWUS74 KMEG 200904 NPWMEG URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEMPHIS TN 404 AM CDT FRI JUL 20 2012 ...VERY HOT AND HUMID CONDITIONS EXPECTED ACROSS MUCH OF THE MIDSOUTH FRIDAY... .VERY HOT AIR WILL SPREAD INTO THE MIDSOUTH TODAY AHEAD OF AN APPROACHING FRONTAL SYSTEM. HUMIDITY LEVELS WILL ALSO BE QUITE HIGH LEADING TO DANGEROUSLY HIGH HEAT INDEX READINGS ACROSS MUCH OF THE MIDSOUTH. HIGH TEMPERATURES WILL RANGE FROM THE MIDDLE 90S TO 103 DEGREES TODAY...WITH THE COOLER AIR TEMPERATURE LOCATIONS OVER NORTHEAST MISSISSIPPI WHERE THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL BE THE GREATEST. HEAT INDICES WILL RANGE FROM 107 TO 113 DEGREES. SLIGHTLY DRIER AIR WILL ARRIVE ON SATURDAY BEHIND A FRONT HELPING TO KEEP HEAT INDEX READINGS BELOW HEAT ADVISORY CRITERIA. ARZ026>028-035-036-048-049-058-MSZ001>005-007-008-010>013-020-021- TNZ019-020-048>053-088>091-201715- /O.UPG.KMEG.EH.A.0001.120720T1600Z-120721T0000Z/ /O.NEW.KMEG.EH.W.0002.120720T1600Z-120721T0600Z/ /O.CON.KMEG.HT.Y.0003.000000T0000Z-120720T1600Z/ CRAIGHEAD-POINSETT-MISSISSIPPI-CROSS-CRITTENDEN-ST. FRANCIS- LEE AR-PHILLIPS-DESOTO-MARSHALL-BENTON MS-TIPPAH-ALCORN-TUNICA- TATE-COAHOMA-QUITMAN-PANOLA-LAFAYETTE-TALLAHATCHIE-YALOBUSHA-DYER- GIBSON-LAUDERDALE-TIPTON-HAYWOOD-CROCKETT-MADISON-CHESTER-SHELBY- FAYETTE-HARDEMAN-MCNAIRY- INCLUDING THE CITIES OF...JONESBORO...HARRISBURG...BLYTHEVILLE... WYNNE...WEST MEMPHIS...FORREST CITY...HELENA...SOUTHAVEN... OLIVE BRANCH...CORINTH...TUNICA...CLARKSDALE...BATESVILLE... OXFORD...DYERSBURG...HUMBOLDT...MILAN...COVINGTON...JACKSON... BARTLETT...GERMANTOWN...COLLIERVILLE...MEMPHIS...MILLINGTON... SOMERVILLE...BOLIVAR 404 AM CDT FRI JUL 20 2012 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 AM CDT THIS MORNING... ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM THIS MORNING TO 1 AM CDT SATURDAY... THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED AN EXCESSIVE HEAT WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 1 AM CDT SATURDAY. THE EXCESSIVE HEAT WATCH IS NO LONGER IN EFFECT. * HEAT INDEX READINGS...BETWEEN 110 AND 113 DEGREES. * TIMING...BETWEEN 11 AM AND 7 PM CDT FRIDAY. * IMPACTS...HEAT RELATED ILLNESS SUCH AS HEAT EXHAUSTION OR HEAT STROKE ARE A REAL THREAT. DEHYDRATION CAN OCCUR QUICKLY. THE EFFECTS OF THIS HEAT WAVE WILL BE CUMULATIVE GIVEN THAT IT HAS PERSISTED FOR SEVERAL DAYS. ALSO REMEMBER TO CHECK ON THE ELDERLY AND THOSE WITHOUT INDOOR AIR CONDITIONING. REMEMBER... BEAT THE HEAT AND CHECK THE BACKSEAT. DO NOT LEAVE CHILDREN OR PETS UNATTENDED IN VEHICLES FOR ANY PERIOD OF TIME. PROVIDE COOL WATER AND SHADE TO PETS AND LIVESTOCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE... RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. && $$ ARZ008-009-017-018-MOZ113-115-MSZ006-009-014>017-022>024- TNZ001>004-021-054-055-092-201715- /O.EXT.KMEG.HT.Y.0003.000000T0000Z-120721T0600Z/ RANDOLPH-CLAY-LAWRENCE-GREENE-DUNKLIN-PEMISCOT-TISHOMINGO- PRENTISS-UNION-PONTOTOC-LEE MS-ITAWAMBA-CALHOUN-CHICKASAW-MONROE- LAKE-OBION-WEAKLEY-HENRY-CARROLL-HENDERSON-DECATUR-HARDIN- INCLUDING THE CITIES OF...WALNUT RIDGE...PARAGOULD...KENNETT... CARUTHERSVILLE...IUKA...BOONEVILLE...NEW ALBANY...TUPELO... AMORY...ABERDEEN...UNION CITY...MARTIN...DRESDEN...PARIS... HUNTINGDON...LEXINGTON...SAVANNAH 404 AM CDT FRI JUL 20 2012 ...HEAT ADVISORY NOW IN EFFECT UNTIL 1 AM CDT SATURDAY... * HEAT INDEX READINGS...BETWEEN 105 AND 110 DEGREES. * TIMING...BETWEEN 11 AM AND 7 PM CDT FRIDAY. * IMPACTS...HEAT RELATED ILLNESS SUCH AS HEAT EXHAUSTION OR HEAT STROKE ARE A REAL THREAT. DEHYDRATION CAN OCCUR QUICKLY. THE EFFECTS OF THIS HEAT WAVE WILL BE CUMULATIVE GIVEN THAT IT HAS PERSISTED FOR SEVERAL DAYS. ALSO REMEMBER TO CHECK ON THE ELDERLY AND THOSE WITHOUT INDOOR AIR CONDITIONING. REMEMBER... BEAT THE HEAT AND CHECK THE BACKSEAT. DO NOT LEAVE CHILDREN OR PETS UNATTENDED IN VEHICLES FOR ANY PERIOD OF TIME. PROVIDE COOL WATER AND SHADE TO PETS AND LIVESTOCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. && $$
4 follow-up statements
135 WWUS74 KMEG 201603 NPWMEG URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEMPHIS TN 1103 AM CDT FRI JUL 20 2012 ...VERY HOT AND HUMID CONDITIONS EXPECTED ACROSS MUCH OF THE MIDSOUTH TODAY... .VERY HOT AIR WILL REMAIN OVER THE MIDSOUTH TODAY. HUMIDITY LEVELS WILL ALSO BE QUITE HIGH LEADING TO DANGEROUSLY HIGH HEAT INDEX READINGS ACROSS MUCH OF THE MIDSOUTH. HIGH TEMPERATURES WILL RANGE FROM THE MIDDLE 90S TO 103 DEGREES...WITH THE COOLER AIR TEMPERATURE LOCATIONS OVER NORTHEAST MISSISSIPPI WHERE THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL BE THE GREATEST. HEAT INDICES WILL RANGE FROM 105 TO 113 DEGREES. SLIGHTLY DRIER AIR WILL ARRIVE ON SATURDAY BEHIND A FRONT HELPING TO KEEP HEAT INDEX READINGS BELOW HEAT ADVISORY CRITERIA. ARZ026>028-035-036-048-049-058-MSZ001>005-007-008-010>013-020-021- TNZ019-020-048>053-088>091-210015- /O.EXP.KMEG.HT.Y.0003.000000T0000Z-120720T1600Z/ /O.CON.KMEG.EH.W.0002.000000T0000Z-120721T0600Z/ CRAIGHEAD-POINSETT-MISSISSIPPI-CROSS-CRITTENDEN-ST. FRANCIS- LEE AR-PHILLIPS-DESOTO-MARSHALL-BENTON MS-TIPPAH-ALCORN-TUNICA- TATE-COAHOMA-QUITMAN-PANOLA-LAFAYETTE-TALLAHATCHIE-YALOBUSHA-DYER- GIBSON-LAUDERDALE-TIPTON-HAYWOOD-CROCKETT-MADISON-CHESTER-SHELBY- FAYETTE-HARDEMAN-MCNAIRY- INCLUDING THE CITIES OF...JONESBORO...HARRISBURG...BLYTHEVILLE... WYNNE...WEST MEMPHIS...FORREST CITY...HELENA...SOUTHAVEN... OLIVE BRANCH...CORINTH...TUNICA...CLARKSDALE...BATESVILLE... OXFORD...DYERSBURG...HUMBOLDT...MILAN...COVINGTON...JACKSON... BARTLETT...GERMANTOWN...COLLIERVILLE...MEMPHIS...MILLINGTON... SOMERVILLE...BOLIVAR 1103 AM CDT FRI JUL 20 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 1 AM CDT SATURDAY... * HEAT INDEX READINGS...AROUND 110 DEGREES. * TIMING...THROUGH EARLY EVENING. * IMPACTS...HEAT RELATED ILLNESS SUCH AS HEAT EXHAUSTION OR HEAT STROKE ARE A REAL THREAT. DEHYDRATION CAN OCCUR QUICKLY. THE EFFECTS OF THIS HEAT WAVE WILL BE CUMULATIVE GIVEN THAT IT HAS PERSISTED FOR SEVERAL DAYS. ALSO REMEMBER TO CHECK ON THE ELDERLY AND THOSE WITHOUT INDOOR AIR CONDITIONING. REMEMBER... BEAT THE HEAT AND CHECK THE BACKSEAT. DO NOT LEAVE CHILDREN OR PETS UNATTENDED IN VEHICLES FOR ANY PERIOD OF TIME. PROVIDE COOL WATER AND SHADE TO PETS AND LIVESTOCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE... RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. && $$ ARZ008-009-017-018-MOZ113-115-MSZ006-009-014>017-022>024- TNZ001>004-021-054-055-092-210015- /O.CON.KMEG.HT.Y.0003.000000T0000Z-120721T0600Z/ RANDOLPH-CLAY-LAWRENCE-GREENE-DUNKLIN-PEMISCOT-TISHOMINGO- PRENTISS-UNION-PONTOTOC-LEE MS-ITAWAMBA-CALHOUN-CHICKASAW-MONROE- LAKE-OBION-WEAKLEY-HENRY-CARROLL-HENDERSON-DECATUR-HARDIN- INCLUDING THE CITIES OF...WALNUT RIDGE...PARAGOULD...KENNETT... CARUTHERSVILLE...IUKA...BOONEVILLE...NEW ALBANY...TUPELO... AMORY...ABERDEEN...UNION CITY...MARTIN...DRESDEN...PARIS... HUNTINGDON...LEXINGTON...SAVANNAH 1103 AM CDT FRI JUL 20 2012 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT SATURDAY... * HEAT INDEX READINGS...BETWEEN 105 AND 109 DEGREES. * TIMING...THROUGH EARLY EVENING. * IMPACTS...HEAT RELATED ILLNESS SUCH AS HEAT EXHAUSTION OR HEAT STROKE ARE A REAL THREAT. DEHYDRATION CAN OCCUR QUICKLY. THE EFFECTS OF THIS HEAT WAVE WILL BE CUMULATIVE GIVEN THAT IT HAS PERSISTED FOR SEVERAL DAYS. ALSO REMEMBER TO CHECK ON THE ELDERLY AND THOSE WITHOUT INDOOR AIR CONDITIONING. REMEMBER... BEAT THE HEAT AND CHECK THE BACKSEAT. DO NOT LEAVE CHILDREN OR PETS UNATTENDED IN VEHICLES FOR ANY PERIOD OF TIME. PROVIDE COOL WATER AND SHADE TO PETS AND LIVESTOCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. && $$ BORGHOFF
646 WWUS74 KMEG 202021 NPWMEG URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEMPHIS TN 321 PM CDT FRI JUL 20 2012 ...VERY HOT AND HUMID CONDITIONS EXPECTED ACROSS MUCH OF THE MIDSOUTH THROUGH THIS AFTERNOON... .HOT AIR WILL REMAIN OVER THE MIDSOUTH FOR THE REMAINDER OF THE AFTERNOON. HUMIDITY LEVELS WILL ALSO BE QUITE HIGH LEADING TO DANGEROUSLY HIGH HEAT INDEX READINGS ACROSS MUCH OF THE MIDSOUTH. MSZ002>004-013-021-TNZ019-020-048-050>052-089-090-210000- /O.CAN.KMEG.EH.W.0002.000000T0000Z-120721T0600Z/ /O.EXB.KMEG.HT.Y.0003.000000T0000Z-120721T0000Z/ MARSHALL-BENTON MS-TIPPAH-LAFAYETTE-YALOBUSHA-DYER-GIBSON- LAUDERDALE-HAYWOOD-CROCKETT-MADISON-FAYETTE-HARDEMAN- INCLUDING THE CITIES OF...OXFORD...DYERSBURG...HUMBOLDT...MILAN... JACKSON...SOMERVILLE...BOLIVAR 321 PM CDT FRI JUL 20 2012 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...EXCESSIVE HEAT WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A HEAT ADVISORY...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. THE EXCESSIVE HEAT WARNING HAS BEEN CANCELLED. * HEAT INDEX READINGS...BETWEEN 105 AND 109 DEGREES. * TIMING...THROUGH EARLY EVENING. * IMPACTS...HEAT RELATED ILLNESS SUCH AS HEAT EXHAUSTION OR HEAT STROKE ARE A REAL THREAT. DEHYDRATION CAN OCCUR QUICKLY. THE EFFECTS OF THIS HEAT WAVE WILL BE CUMULATIVE GIVEN THAT IT HAS PERSISTED FOR SEVERAL DAYS. ALSO REMEMBER TO CHECK ON THE ELDERLY AND THOSE WITHOUT INDOOR AIR CONDITIONING. REMEMBER... BEAT THE HEAT AND CHECK THE BACKSEAT. DO NOT LEAVE CHILDREN OR PETS UNATTENDED IN VEHICLES FOR ANY PERIOD OF TIME. PROVIDE COOL WATER AND SHADE TO PETS AND LIVESTOCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. && $$ MSZ005-TNZ053-091-202130- /O.CAN.KMEG.EH.W.0002.000000T0000Z-120721T0600Z/ ALCORN-CHESTER-MCNAIRY- INCLUDING THE CITY OF...CORINTH 321 PM CDT FRI JUL 20 2012 ...EXCESSIVE HEAT WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS CANCELLED THE EXCESSIVE HEAT WARNING. $$ MSZ006-009-016-017-024-TNZ004-021-054-055-092-202130- /O.CAN.KMEG.HT.Y.0003.000000T0000Z-120721T0600Z/ TISHOMINGO-PRENTISS-LEE MS-ITAWAMBA-MONROE-HENRY-CARROLL- HENDERSON-DECATUR-HARDIN- INCLUDING THE CITIES OF...IUKA...BOONEVILLE...TUPELO...AMORY... ABERDEEN...PARIS...HUNTINGDON...LEXINGTON...SAVANNAH 321 PM CDT FRI JUL 20 2012 ...HEAT ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS CANCELLED THE HEAT ADVISORY. TEMPERATURES HAVE REMAINED IN THE 80S THROUGH THE DAY WITH HEAT INDICES NEAR 100. THUS...THE HEAT ADVISORY IS CANCELLED. $$ ARZ026>028-035-036-048-049-058-MSZ001-007-008-010>012-020-TNZ049- 088-210000- /O.EXT.KMEG.EH.W.0002.000000T0000Z-120721T0000Z/ CRAIGHEAD-POINSETT-MISSISSIPPI-CROSS-CRITTENDEN-ST. FRANCIS- LEE AR-PHILLIPS-DESOTO-TUNICA-TATE-COAHOMA-QUITMAN-PANOLA- TALLAHATCHIE-TIPTON-SHELBY- INCLUDING THE CITIES OF...JONESBORO...HARRISBURG...BLYTHEVILLE... WYNNE...WEST MEMPHIS...FORREST CITY...HELENA...SOUTHAVEN... OLIVE BRANCH...TUNICA...CLARKSDALE...BATESVILLE...COVINGTON... BARTLETT...GERMANTOWN...COLLIERVILLE...MEMPHIS...MILLINGTON 321 PM CDT FRI JUL 20 2012 ...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 7 PM CDT THIS EVENING... * HEAT INDEX READINGS...AROUND 110 DEGREES. * TIMING...THROUGH EARLY EVENING. * IMPACTS...HEAT RELATED ILLNESS SUCH AS HEAT EXHAUSTION OR HEAT STROKE ARE A REAL THREAT. DEHYDRATION CAN OCCUR QUICKLY. THE EFFECTS OF THIS HEAT WAVE WILL BE CUMULATIVE GIVEN THAT IT HAS PERSISTED FOR SEVERAL DAYS. ALSO REMEMBER TO CHECK ON THE ELDERLY AND THOSE WITHOUT INDOOR AIR CONDITIONING. REMEMBER... BEAT THE HEAT AND CHECK THE BACKSEAT. DO NOT LEAVE CHILDREN OR PETS UNATTENDED IN VEHICLES FOR ANY PERIOD OF TIME. PROVIDE COOL WATER AND SHADE TO PETS AND LIVESTOCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE... RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. && $$ ARZ008-009-017-018-MOZ113-115-MSZ014-015-022-023-TNZ001>003- 210000- /O.EXT.KMEG.HT.Y.0003.000000T0000Z-120721T0000Z/ RANDOLPH-CLAY-LAWRENCE-GREENE-DUNKLIN-PEMISCOT-UNION-PONTOTOC- CALHOUN-CHICKASAW-LAKE-OBION-WEAKLEY- INCLUDING THE CITIES OF...WALNUT RIDGE...PARAGOULD...KENNETT... CARUTHERSVILLE...NEW ALBANY...UNION CITY...MARTIN...DRESDEN 321 PM CDT FRI JUL 20 2012 ...HEAT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT THIS EVENING... * HEAT INDEX READINGS...BETWEEN 105 AND 109 DEGREES. * TIMING...THROUGH EARLY EVENING. * IMPACTS...HEAT RELATED ILLNESS SUCH AS HEAT EXHAUSTION OR HEAT STROKE ARE A REAL THREAT. DEHYDRATION CAN OCCUR QUICKLY. THE EFFECTS OF THIS HEAT WAVE WILL BE CUMULATIVE GIVEN THAT IT HAS PERSISTED FOR SEVERAL DAYS. ALSO REMEMBER TO CHECK ON THE ELDERLY AND THOSE WITHOUT INDOOR AIR CONDITIONING. REMEMBER... BEAT THE HEAT AND CHECK THE BACKSEAT. DO NOT LEAVE CHILDREN OR PETS UNATTENDED IN VEHICLES FOR ANY PERIOD OF TIME. PROVIDE COOL WATER AND SHADE TO PETS AND LIVESTOCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. && $$ BORGHOFF
489 WWUS74 KMEG 202339 NPWMEG URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEMPHIS TN 639 PM CDT FRI JUL 20 2012 ...VERY HOT AND HUMID CONDITIONS EXPECTED ACROSS MUCH OF THE MIDSOUTH THROUGH THIS AFTERNOON... .HOT AIR WILL REMAIN OVER THE MIDSOUTH FOR THE REMAINDER OF THE EVENING AND THROUGH SATURDAY AFTERNOON. HUMIDITY LEVELS WILL ALSO BE QUITE HIGH LEADING TO DANGEROUSLY HIGH HEAT INDEX READINGS ACROSS MUCH OF THE MIDSOUTH. ARZ026>028-035-036-048-049-058-MSZ001-007-008-010>012-020-TNZ049- 088-210745- /O.EXP.KMEG.EH.W.0002.000000T0000Z-120721T0000Z/ /O.EXB.KMEG.HT.Y.0003.120721T0000Z-120722T0000Z/ CRAIGHEAD-POINSETT-MISSISSIPPI-CROSS-CRITTENDEN-ST. FRANCIS- LEE AR-PHILLIPS-DESOTO-TUNICA-TATE-COAHOMA-QUITMAN-PANOLA- TALLAHATCHIE-TIPTON-SHELBY- INCLUDING THE CITIES OF...JONESBORO...HARRISBURG...BLYTHEVILLE... WYNNE...WEST MEMPHIS...FORREST CITY...HELENA...SOUTHAVEN... OLIVE BRANCH...TUNICA...CLARKSDALE...BATESVILLE...COVINGTON... BARTLETT...GERMANTOWN...COLLIERVILLE...MEMPHIS...MILLINGTON 639 PM CDT FRI JUL 20 2012 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT SATURDAY... ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A HEAT ADVISORY...WHICH IS IN EFFECT UNTIL 7 PM CDT SATURDAY. * HEAT INDEX READINGS...BETWEEN 105 AND 109 DEGREES. * TIMING...THROUGH EARLY EVENING SATURDAY. * IMPACTS...HEAT RELATED ILLNESS SUCH AS HEAT EXHAUSTION OR HEAT STROKE ARE A REAL THREAT. DEHYDRATION CAN OCCUR QUICKLY. THE EFFECTS OF THIS HEAT WAVE WILL BE CUMULATIVE GIVEN THAT IT HAS PERSISTED FOR SEVERAL DAYS. ALSO REMEMBER TO CHECK ON THE ELDERLY AND THOSE WITHOUT INDOOR AIR CONDITIONING. REMEMBER... BEAT THE HEAT AND CHECK THE BACKSEAT. DO NOT LEAVE CHILDREN OR PETS UNATTENDED IN VEHICLES FOR ANY PERIOD OF TIME. PROVIDE COOL WATER AND SHADE TO PETS AND LIVESTOCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. && $$ ARZ008-009-017-018-MOZ113-115-MSZ002>004-013>015-021>023- TNZ001>003-019-020-048-050>052-089-090-210045- /O.EXP.KMEG.HT.Y.0003.000000T0000Z-120721T0000Z/ RANDOLPH-CLAY-LAWRENCE-GREENE-DUNKLIN-PEMISCOT-MARSHALL-BENTON MS- TIPPAH-LAFAYETTE-UNION-PONTOTOC-YALOBUSHA-CALHOUN-CHICKASAW-LAKE- OBION-WEAKLEY-DYER-GIBSON-LAUDERDALE-HAYWOOD-CROCKETT-MADISON- FAYETTE-HARDEMAN- INCLUDING THE CITIES OF...WALNUT RIDGE...PARAGOULD...KENNETT... CARUTHERSVILLE...OXFORD...NEW ALBANY...UNION CITY...MARTIN... DRESDEN...DYERSBURG...HUMBOLDT...MILAN...JACKSON...SOMERVILLE... BOLIVAR 639 PM CDT FRI JUL 20 2012 ...HEAT ADVISORY WILL EXPIRE AT 7 PM CDT THIS EVENING... HEAT INDICIES HAVE FALLEN BELOW 105 DEGREES AND WILL REMAIN BELOW HEAT ADVISORY CRITERIA. $$
926 WWUS74 KMEG 202348 CCA NPWMEG URGENT - WEATHER MESSAGE...CORRECTED NATIONAL WEATHER SERVICE MEMPHIS TN 647 PM CDT FRI JUL 20 2012 ...VERY HOT AND HUMID CONDITIONS EXPECTED ACROSS WESTERN PORTIONS OF THE MIDSOUTH THROUGH SATURDAY AFTERNOON... .HOT AIR WILL REMAIN OVER THE MIDSOUTH FOR THE REMAINDER OF THE EVENING AND THROUGH SATURDAY AFTERNOON. HUMIDITY LEVELS WILL ALSO BE QUITE HIGH LEADING TO DANGEROUSLY HIGH HEAT INDEX READINGS ACROSS MUCH OF THE MIDSOUTH. ARZ026>028-035-036-048-049-058-MSZ001-007-008-010>012-020-TNZ049- 088-210815- /O.EXP.KMEG.EH.W.0002.000000T0000Z-120721T0000Z/ /O.EXB.KMEG.HT.Y.0003.120721T0000Z-120722T0000Z/ CRAIGHEAD-POINSETT-MISSISSIPPI-CROSS-CRITTENDEN-ST. FRANCIS- LEE AR-PHILLIPS-DESOTO-TUNICA-TATE-COAHOMA-QUITMAN-PANOLA- TALLAHATCHIE-TIPTON-SHELBY- INCLUDING THE CITIES OF...JONESBORO...HARRISBURG...BLYTHEVILLE... WYNNE...WEST MEMPHIS...FORREST CITY...HELENA...SOUTHAVEN... OLIVE BRANCH...TUNICA...CLARKSDALE...BATESVILLE...COVINGTON... BARTLETT...GERMANTOWN...COLLIERVILLE...MEMPHIS...MILLINGTON 647 PM CDT FRI JUL 20 2012 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT SATURDAY... ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A HEAT ADVISORY...WHICH IS IN EFFECT UNTIL 7 PM CDT SATURDAY. * HEAT INDEX READINGS...BETWEEN 105 AND 109 DEGREES. * TIMING...THROUGH EARLY EVENING SATURDAY. * IMPACTS...HEAT RELATED ILLNESS SUCH AS HEAT EXHAUSTION OR HEAT STROKE ARE A REAL THREAT. DEHYDRATION CAN OCCUR QUICKLY. THE EFFECTS OF THIS HEAT WAVE WILL BE CUMULATIVE GIVEN THAT IT HAS PERSISTED FOR SEVERAL DAYS. ALSO REMEMBER TO CHECK ON THE ELDERLY AND THOSE WITHOUT INDOOR AIR CONDITIONING. REMEMBER... BEAT THE HEAT AND CHECK THE BACKSEAT. DO NOT LEAVE CHILDREN OR PETS UNATTENDED IN VEHICLES FOR ANY PERIOD OF TIME. PROVIDE COOL WATER AND SHADE TO PETS AND LIVESTOCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. CHECK UP ON RELATIVES AND NEIGHBORS. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY...CALL 9 1 1. && $$ ARZ008-009-017-018-MOZ113-115-MSZ002>004-013>015-021>023- TNZ001>003-019-020-048-050>052-089-090-210100- /O.EXP.KMEG.HT.Y.0003.000000T0000Z-120721T0000Z/ RANDOLPH-CLAY-LAWRENCE-GREENE-DUNKLIN-PEMISCOT-MARSHALL-BENTON MS- TIPPAH-LAFAYETTE-UNION-PONTOTOC-YALOBUSHA-CALHOUN-CHICKASAW-LAKE- OBION-WEAKLEY-DYER-GIBSON-LAUDERDALE-HAYWOOD-CROCKETT-MADISON- FAYETTE-HARDEMAN- INCLUDING THE CITIES OF...WALNUT RIDGE...PARAGOULD...KENNETT... CARUTHERSVILLE...OXFORD...NEW ALBANY...UNION CITY...MARTIN... DRESDEN...DYERSBURG...HUMBOLDT...MILAN...JACKSON...SOMERVILLE... BOLIVAR 647 PM CDT FRI JUL 20 2012 ...HEAT ADVISORY WILL EXPIRE AT 7 PM CDT THIS EVENING... HEAT INDICIES HAVE FALLEN BELOW 105 DEGREES AND WILL REMAIN BELOW HEAT ADVISORY CRITERIA. $$
What forecasters said that day
The local office's own words before this excessive heat warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Memphis, TN wrote its last area forecast discussion before this excessive heat warning went out at Jul 19, 11:43 PM CDT, 4 hours 21 minutes earlier.
Area forecast discussion, Jul 19, 11:43 PM CDT, 4 hours 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEMPHIS TN
1143 PM CDT THU JUL 19 2012
.UPDATE...
UPDATED FOR 06Z TAF CYCLE.
&&
.PREV DISCUSSION... /ISSUED 1026 PM CDT THU JUL 19 2012/
UPDATE...
WITH THE ARRIVAL OF THE 00Z NAM...DECIDED TO UPDATE AND ISSUE AN
EXCESSIVE HEAT WATCH FOR MUCH OF THE MIDSOUTH FRIDAY. THE WATCH
INCLUDES JONESBORO...DYERSBURG...MEMPHIS...JACKSON...OXFORD AND
CLARKSDALE. DID NOT INCLUDE TUPELO IN THE WATCH ATTM...BUT LEFT
THEM IN THE HEAT ADVISORY. NOT QUITE AS CONFIDENT EXCESSIVE HEAT
WARNING CRITERIA WILL BE MET IN PORTIONS OF NORTHEAST MS...SINCE
THE CHANCE OF THUNDERSTORMS IS THE GREATEST IN THIS AREA AHEAD OF
A FRONTAL SYSTEM. TO THE EXTREME NORTH...WITH DRIER AIR ADVECTING
IN FROM THE NORTH...SURFACE DEW POINTS MAY MIX DOWN ENOUGH TO KEEP
HEAT INDEX READINGS BELOW EXCESSIVE HEAT WARNING LEVELS. BUT THIS
IS NOT TO SAY THAT THE ENTIRE MIDSOUTH MAY EVENTUALLY NEED AN
EXCESSIVE HEAT WARNING FOR FRIDAY. KEPT THE HEAT ADVISORY GOING
WHERE THE EXCESSIVE HEAT WATCH WAS NOT ISSUED.
THE NAM MODEL...WHICH HAS BEEN DOING GOOD WITH SURFACE TEMPERATURES
RECENTLY...HAS BEEN VERY CONSISTENT IN INDICATING THAT FRIDAY WILL
BE A VERY HOT AND HUMID DAY ACROSS MUCH OF THE MIDSOUTH. AS A
FRONTAL SYSTEM PUSHES INTO THE AREA FROM THE NORTH...A THERMAL
RIDGE WILL ADVECT INTO THE MIDSOUTH AHEAD OF THE FRONT WITH
MOISTURE POOLING. THE 00Z NAM SHOWS 925 MB TEMPERATURES BETWEEN 30
AND 31 DEGREES PUSHING INTO PORTIONS OF THE AREA FROM THE WEST. ACTUAL
MODEL OUTPUT SHOWS A SURFACE HIGH TEMPERATURE OF 103 IN MEMPHIS...DID
NOT GO QUITE THIS HOT BUT DID BUMP MEMPHIS UP TO 101 DEGREES.
ALSO...THE BULLSEYE OF THE HIGHEST HEAT INDEX READINGS FROM THE
MODEL OUTPUT IS CENTERED AROUND THE MEMPHIS METRO AREA WITH HEAT
INDEX READINGS APPROACHING 115 DEGREES. EVEN IF HEAT INDEX
READINGS ARE SLIGHTLY LESS...THEY WOULD STILL EXCEED THE EXCESSIVE
HEAT WARNING CRITERIA OF 110 DEGREES.
JCL
PREV DISCUSSION... /ISSUED 852 PM CDT THU JUL 19 2012/
UPDATE...
UPDATED THE ZONE FORECASTS...GRIDS AND HAZARDOUS WEATHER OUTLOOK
FOR THE REMAINDER OF TONIGHT.
SHOWERS AND THUNDERSTORMS ARE STRUGGLING MUCH MORE THAN YESTERDAY
EVENING ACROSS OUR FORECAST AREA WITH THE ATMOSPHERE SEEMINGLY MORE
CAPPED. STRONGER STORMS MOVING INTO MIDDLE TN DO NOT APPEAR TO BE
BUILDING ANYMORE TO THE WEST AND ARE MOVING SOUTHEASTWARD. DID
LEAVE IN A 30 PERCENT CHANCE OF SHOWERS AND THUNDERSTORMS AREAWIDE
FOR TONIGHT AS A WEAK FRONT APPROACHES FROM THE NORTH...AND WITH
NUMEROUS OUTFLOW BOUNDARIES ACROSS THE REGION FROM EARLIER STORMS.
THREAT OF SEVERE WEATHER FOR TONIGHT HAS DECREASED CONSIDERABLY
AND REMOVED MENTION OF IT FROM THE HAZARDOUS WEATHER OUTLOOK.
JCL
PREV DISCUSSION... /ISSUED 728 PM CDT THU JUL 19 2012/
UPDATE...
UPDATED TO FRESHEN ZONE FORECASTS WITH EXPIRATION OF EXCESSIVE HEAT
WARNING ISSUED EARLIER UNTIL 7 PM THIS EVENING FOR PORTIONS OF
NORTHEAST AR AND THE MO BOOTHEEL. NO OTHER CHANGES MADE TO THE
EARLIER FORECAST AT THIS TIME.
SCATTERED THUNDERSTORMS IN NORTHEAST AR ARE GRADUALLY MOVING SOUTHEASTWARD
BUT ARE STRUGGLING MORE THAN THE STORMS DID YESTERDAY EVENING.
WILL NEED TO WATCH STORMS OVER KY JUST TO THE NORTHEAST OF PARIS
TN...THERE DOES SEEM TO BE SOME WESTWARD BUILDING OF THESE STORMS.
JCL
PREV DISCUSSION... /ISSUED 347 PM CDT THU JUL 19 2012/
SHORT TERM...TONIGHT THROUGH SATURDAY NIGHT.
INTENSE HEAT HAS RETURNED TODAY WITH SEVERAL LOCATIONS OVER NERN
AR AND THE BOOTHEEL EXCEEDING 100 DEGREES. IN FACT...AT 3 PM
JONESBORO HAS REACHED AN IMPRESSIVE 105 DEGREES WITH MID 100S
EXTENDING TO THE SOUTHWEST FROM THERE. COOLER AIR TEMPERATURES
CAN BE FOUND TO THE SOUTHEAST OVER NERN MS...BUT DEW POINTS ARE
EXTREMELY OPPRESSIVE AND ARE APPROACHING 80 DEGREES IN SOME SPOTS
DOWN THERE...THUS THE DIFFERENCE IN HEAT INDEX AROUND THE AREA IS
ONLY A FEW DEGREES. OBVIOUSLY DECIDED TO EXPAND THE HEAT ADVISORY
ACROSS THE REST OF THE CWA FOR THIS AFTERNOON AND TONIGHT.
CONVECTION THIS AFTERNOON HAS BEEN RATHER UNIMPRESSIVE DUE TO THE
STABLE AIRMASS LEFT BEHIND FROM OUTFLOWS LAST NIGHT. HOWEVER...
ACTIVITY IS BEGINNING TO INCREASE IN COVERAGE AND INTENSITY OVER
ERN AR...NRN MS...AND SERN MO AS THE CAP FINALLY ERODES. THINK
THIS TREND WILL CONTINUE INTO THE EVENING WITH THE POTENTIAL FOR
ADDITIONAL ACTIVITY TO FORM ALONG THE FRONT THIS EVENING AS IT
SAGS SOUTH FROM SRN MO. MAINTAINED NEAR 50 POP FOR TONIGHT ACROSS
THE ENTIRE AREA...WHICH MAY NEED TO BE ADJUSTED WHEN IT BECOMES
CLEAR HOW EXISTING OUTFLOW BOUNDARIES CONTRIBUTE TO THE COVERAGE.
A FEW SEVERE STORMS WILL BE POSSIBLE WITH DAMAGING WINDS.
THE FRONT WILL SAG SOUTH INTO NRN MS FRIDAY...REDUCING POPS FROM
NORTH TO SOUTH. THERE ARE TWO CONCERNS FOR FRIDAY. ONE BEING HIGHS
AND DEW POINTS...AND THE OTHER BEING SEVERE WX POTENTIAL ALONG AND
AHEAD OF THE FRONT.
HIGH TEMPERATURES WILL BE HOT...QUESTION IS HOW HOT. THIS IS A
FAVORABLE PATTERN FOR 100 DEGREE DAYS OVER THE DELTA AS DRIER AIR
FEEDS IN ON NORTH WINDS AS THE THERMAL RIDGE LAGS ALONG AND BEHIND
THE SURFACE FRONT. COULD SEE SOME AREAS EXCEED 103 DEGREES AGAIN
TOMORROW...PARTICULARLY ALONG I-40 AND WEST OF I-55 WHERE THE 925
MB THERMAL RIDGE IS EXPECTED TO BE LAID OUT AROUND 21Z. THINK THE
MAV TEMPERATURES ARE EMBARRASSINGLY LOW SO DISREGARDED THEM
COMPLETELY. WENT SLIGHTLY HIGHER THAN A BLEND OF MET AND EURO.
DEW POINTS AGAIN WILL BE HIGH ALONG AND AHEAD OF THE FRONT WITH
SIGNIFICANT POOLING POSSIBLE. DESPITE HIGHS ONLY IN THE LOW TO MID
90S OVER LOCATIONS NEAR THE TN RIVER AND NERN MS...DEW POINTS WILL
AGAIN BE IN THE MID/UPPER 70S YIELDING HEAT INDICES AOA 105
DEGREES. FURTHER NORTHWEST...IT IS HARD TO SAY HOW MUCH DEW POINTS
WILL MIX BUT THINK THEY SHOULD REMAIN AT LEAST IN THE UPPER 60S.
THUS...ISSUED A HEAT ADVISORY FOR THE ENTIRE MIDSOUTH THROUGH 7 PM
FRIDAY. COULD SEE SOME LOCATIONS JUST BEHIND THE FRONT NEAR I-40
REMAINING HIGH ON DEW POINTS /MID 70S/...JUXTAPOSED WITH
TEMPERATURES EXCEEDING 100 /INCLUDING MEMPHIS/. IN THAT CASE...AN
UPGRADE TO AN EXCESSIVE HEAT WARNING WILL BE NEEDED.
THINK THE SEVERE THREAT FRIDAY WILL BE CONFINED INTO THE
SOUTHEASTERN-MOST COUNTIES. HERE...SBCAPE VALUES OF 4000 TO 5000
J/KG WILL BE OBTAINED FROM POOLING DEW POINTS AND DRYING MID
LEVELS.STRENGTHENING MID LEVEL FLOW ASSOCIATED WITH THE APPROACH
OF THE FRONT SHOULD PROVIDE ENOUGH SHEAR FOR AT LEAST SOME
ORGANIZATION OF STORM CLUSTERS OR LINE SEGMENTS CAPABLE OF WIND
DAMAGE...ALTHOUGH WITH THE DRYING MID LEVELS HAIL WILL ALSO BE
POSSIBLE.
DRIER AIR WILL ARRIVE SATURDAY...BUT TEMPERATURES WILL STILL
REMAIN ABOVE AVERAGE AS THE MID LEVEL RIDGE REMAINS IN PLACE OVER
THE MID MISSISSIPPI VALLEY. THE DRIER AIR SHOULD MITIGATE THE NEED
FOR ANOTHER HEAT ADVISORY.
LONG TERM...SUNDAY THROUGH THURSDAY.
WEAK CONVERGENCE AND A LESSER INFLUENCE OF THE SEMI-PERMANENT 2012
RIDGE OVER NERN MS WILL ALLOW FOR SMALL CHANCES FOR STORMS EACH
DAY THROUGH TUESDAY. FURTHER NORTHWEST...NO LIFTING MECHANISMS AND
THE RIDGE SHOULD KEEP THE RISK AT BAY.
EURO SHOWS THE RIDGE EXPANDING FOR MID/LATE WEEK...WITH TEMPERATURES
INCREASING BACK TOWARD OR EXCEEDING 100. DEW POINTS MAY CREEP BACK
INTO THE LOWER 70S AND HEAT HEADLINES MAY BE NEEDED AGAIN AT SOME
POINT LATER NEXT WEEK.
BORGHOFF
&&
.AVIATION...
VFR CONDITIONS WILL PREVAIL ACROSS THE MAJORITY OF THE MIDSOUTH
REGION OVERNIGHT. THE ONLY EXCEPTION BEING SOME LOWERING CIGS AND
VISB DUE TO MVFR FOG AT TAF SITE TUP STARTING AROUND 8Z. WINDS
WILL BE GENERALLY LESS THAT 7-8KTS ACROSS THE AREA THROUGH MID
MORNING. FRONTAL PASSAGE DURING THE DAY ON FRIDAY WILL YIELD
INCREASED CHANCES FOR SOME PRECIPITATION AND ASSOCIATED LOWERING
OF CIGS. THUS...INCLUDED VCSH AT MEM AND MKL...AND VCTS AT TUP
WHERE THE MOST UNSTABLE AIRMASS WILL RESIDE. FURTHERMORE...WINDS
WILL SHIFT TO A NORTHERLY COMPONENT BEHIND THE PASSING FRONT
DURING THE LATE MORNING FOR JBR...THE OTHER SITES WILL FOLLOW
SUIT LATER IN THE DAY AS THE BOUNDARY PUSHES SOUTHEAST.
CDG
&&
.PRELIMINARY POINT TEMPS/POPS...
MEM 79 101 78 97 / 30 20 10 10
MKL 76 98 72 94 / 30 20 10 0
JBR 77 101 75 99 / 30 10 0 0
TUP 71 94 77 92 / 30 50 30 20
&&
.MEG WATCHES/WARNINGS/ADVISORIES...
AR...HEAT ADVISORY UNTIL 7 PM CDT FRIDAY FOR CLAY-GREENE-LAWRENCE-
RANDOLPH.
HEAT ADVISORY UNTIL 11 AM CDT FRIDAY FOR CRAIGHEAD-CRITTENDEN-
CROSS-LEE AR-MISSISSIPPI-PHILLIPS-POINSETT-ST. FRANCIS.
EXCESSIVE HEAT WATCH FROM 11 AM CDT FRIDAY THROUGH FRIDAY
EVENING FOR CRAIGHEAD-CRITTENDEN-CROSS-LEE AR-MISSISSIPPI-
PHILLIPS-POINSETT-ST. FRANCIS.
MO...HEAT ADVISORY UNTIL 7 PM CDT FRIDAY FOR DUNKLIN-PEMISCOT.
MS...HEAT ADVISORY UNTIL 7 PM CDT FRIDAY FOR CALHOUN-CHICKASAW-
ITAWAMBA-LEE MS-MONROE-PONTOTOC-PRENTISS-TISHOMINGO-UNION.
HEAT ADVISORY UNTIL 11 AM CDT FRIDAY FOR ALCORN-BENTON MS-
COAHOMA-DESOTO-LAFAYETTE-MARSHALL-PANOLA-QUITMAN-
TALLAHATCHIE-TATE-TIPPAH-TUNICA-YALOBUSHA.
EXCESSIVE HEAT WATCH FROM 11 AM CDT FRIDAY THROUGH FRIDAY
EVENING FOR ALCORN-BENTON MS-COAHOMA-DESOTO-LAFAYETTE-
MARSHALL-PANOLA-QUITMAN-TALLAHATCHIE-TATE-TIPPAH-TUNICA-
YALOBUSHA.
TN...HEAT ADVISORY UNTIL 7 PM CDT FRIDAY FOR CARROLL-DECATUR-HARDIN-
HENDERSON-HENRY-LAKE-OBION-WEAKLEY.
HEAT ADVISORY UNTIL 11 AM CDT FRIDAY FOR CHESTER-CROCKETT-DYER-
FAYETTE-GIBSON-HARDEMAN-HAYWOOD-LAUDERDALE-MADISON-MCNAIRY-
SHELBY-TIPTON.
EXCESSIVE HEAT WATCH FROM 11 AM CDT FRIDAY THROUGH FRIDAY
EVENING FOR CHESTER-CROCKETT-DYER-FAYETTE-GIBSON-HARDEMAN-
HAYWOOD-LAUDERDALE-MADISON-MCNAIRY-SHELBY-TIPTON.
&&Hazardous weather outlook, Jul 19, 10:04 PM CDT, 6 hours before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MEMPHIS TN 1004 PM CDT THU JUL 19 2012 ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115- MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-201100- ALCORN-BENTON MS-CALHOUN-CARROLL-CHESTER-CHICKASAW-CLAY-COAHOMA- CRAIGHEAD-CRITTENDEN-CROCKETT-CROSS-DESOTO-DECATUR-DUNKLIN-DYER- FAYETTE-GIBSON-GREENE-HARDEMAN-HARDIN-HAYWOOD-HENDERSON-HENRY- ITAWAMBA-LAFAYETTE-LAKE-LAUDERDALE-LAWRENCE-LEE AR-LEE MS-MADISON- MARSHALL-MCNAIRY-MISSISSIPPI-MONROE-OBION-PANOLA-PEMISCOT- PHILLIPS-POINSETT-PONTOTOC-PRENTISS-QUITMAN-RANDOLPH-SHELBY- ST. FRANCIS-TALLAHATCHIE-TATE-TIPPAH-TIPTON-TISHOMINGO-TUNICA- UNION-WEAKLEY-YALOBUSHA- 1004 PM CDT THU JUL 19 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS... THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE. .DAY ONE...TONIGHT A HEAT ADVISORY IS IN EFFECT FOR THE ENTIRE AREA TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY AN EXCESSIVE HEAT WATCH HAS BEEN POSTED FOR MUCH OF THE MIDSOUTH...GENERALLY ALONG AND TO THE SOUTH OF A LINE FROM JONESBORO ARKANSAS TO DYERSBURG TENNESSEE AND WEST OF A LINE FROM JACKSON TENNESSEE TO OXFORD MISSISSIPPI. A HEAT ADVISORY REMAINS IN EFFECT FOR LOCATIONS ELSEWHERE. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FRIDAY SOUTH OF A LINE FROM CLARKSDALE TO CORINTH MISSISSIPPI. LARGE HAIL AND DAMAGING WINDS ARE THE MAIN THREATS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FRIDAY FOR THE SLIGHT RISK AREA. JCL
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 9:47 PM CDT | Excessive Heat Watch | MEG | Alcorn, Benton, Coahoma, DeSoto, Lafayette, Marshall and 7 more | 6 hr |
| Jul 20, 5:31 PM CDT | Special Weather Statement | MEG | Marshall | 29 min |
| Jul 20, 5:37 PM CDT | Severe Thunderstorm Warning | MEG | Benton, Marshall | 38 min |
| Jul 20, 3:14 PM CDT | Special Weather Statement | MEG | Henry | 31 min |
| Jul 20, 3:50 PM CDT | Special Weather Statement | MEG | Carroll | 25 min |
| Jul 20, 5:15 PM CDT | Special Weather Statement | MEG | Carroll | 30 min |
| Jul 20, 6:18 PM CDT | Special Weather Statement | MEG | Madison | 27 min |
Nearby
Excessive Heat Warnings in Mississippi, 2012Excessive Heat Warnings in Tennessee, 2012Excessive Heat Warnings in Arkansas, 2012Every excessive heat warning in 2012
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.