Alert archive / Missouri / Heat Advisories in 2011
Heat Advisory 5, NWS St. Louis, MO
NWS St. Louis, MO issued this heat advisory at Aug 5, 2011, 4:10 AM CDT for 14 counties in Illinois; 23 counties in Missouri. It took effect at Aug 6, 2011, 12:00 PM CDT. It was in force for 31 hr.
The area
The counties it named.
The facts
- Issued
- Aug 5, 2011, 4:10 AM CDT (09:10 UTC)
- In effect from
- Aug 6, 2011, 12:00 PM CDT
- Expired
- Aug 7, 2011, 7:00 PM CDT
- In force
- 31 hr
- Issued by
- NWS St. Louis, MO
All 37 counties
Bond County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 15 km from the middle of the area, began a volume at 09:12 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
Lincoln, IL (KILX), launched 00:00Z, 9.2 hours before the alert went out and 248 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
- 1765 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
240 WWUS73 KLSX 050910 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 410 AM CDT FRI AUG 5 2011 ...DANGEROUS HEAT AND HUMIDITY WILL RETURN ON SATURDAY... .AFTER A BREAK IN THE EXCESSIVE HEAT THURSDAY AND TODAY...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY IS EXPECTED TO RETURN TO THE AREA ON SATURDAY. A COLD FRONT PASSING THROUGH THE AREA LATE ON SUNDAY SHOULD END THE EXCESSIVE HEAT SUNDAY EVENING. ILZ100>102-MOZ061-063>065-052200- /O.NEW.KLSX.HT.Y.0005.110806T1700Z-110808T0000Z/ MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-ST. LOUIS MO- ST. LOUIS CITY MO-JEFFERSON MO- INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE... ST CHARLES...ST LOUIS 410 AM CDT FRI AUG 5 2011 ...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 7 PM CDT SUNDAY... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A HEAT ADVISORY...WHICH IS IN EFFECT FROM NOON SATURDAY TO 7 PM CDT SUNDAY. * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY IS EXPECTED TO RETURN BY SATURDAY AFTERNOON AND CONTINUE UNTIL EARLY SUNDAY EVENING. * HEAT INDEX VALUES...PEAK READINGS OF AROUND 105 TO 110 DURING THE AFTERNOON AND EARLY EVENING HOURS EACH DAY...WITH LITTLE RELIEF DURING THE NIGHT. THE MOST OPPRESSIVE CONDITIONS WILL OCCUR IN THE SAINT LOUIS METRO AREA DUE TO THE URBAN HEAT ISLAND EFFECT. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE 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. 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 IMMEDIATELY. PEOPLE IN THE ST. LOUIS METROPOLITAN AREA CAN GET INFORMATION ABOUT COOLING CENTERS OR ENERGY ASSISTANCE RELATED TO THE EXCESSIVE HEAT BY CALLING THE UNITED WAY OF GREATER ST. LOUIS AT 800-427-4626...OR IF CALLING FROM A LAND LINE PHONE DIAL 2-1-1. YOU CAN ALSO CALL COOL DOWN ST. LOUIS AT 314-241-7668. && $$ TES
6 follow-up statements
855 WWUS73 KLSX 052040 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 340 PM CDT FRI AUG 5 2011 ...DANGEROUS HEAT AND HUMIDITY WILL RETURN ON SATURDAY... .THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY IS EXPECTED TO RETURN TO THE AREA ON SATURDAY AND CONTINUE THROUGH THE SUNDAY. A COLD FRONT PASSING THROUGH THE AREA ON SUNDAY EVENING SHOULD END THE EXCESSIVE HEAT...WITH NEAR NORMAL TEMPERATURES EXPECTED THE FIRST HALF OF NEXT WEEK. ILZ069-074-079-MOZ041-047>051-059-060-062-072>075-084-085-099- 061200- /O.EXA.KLSX.HT.Y.0005.110806T1700Z-110808T0000Z/ CLINTON IL-WASHINGTON IL-RANDOLPH IL-BOONE MO-MONITEAU MO-COLE MO- OSAGE MO-CALLAWAY MO-MONTGOMERY MO-GASCONADE MO-WARREN MO- FRANKLIN MO-CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO- STE. GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...CHESTER...COLUMBIA...JEFFERSON CITY... UNION...FARMINGTON 340 PM CDT FRI AUG 5 2011 ...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 7 PM CDT SUNDAY... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A HEAT ADVISORY...WHICH IS IN EFFECT FROM NOON SATURDAY TO 7 PM CDT SUNDAY. * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY IS EXPECTED TO RETURN BY SATURDAY AFTERNOON AND CONTINUE UNTIL EARLY SUNDAY EVENING. * HEAT INDEX VALUES...PEAK READINGS OF AROUND 105 TO 110 DURING THE AFTERNOON AND EARLY EVENING HOURS EACH DAY...WITH LITTLE RELIEF DURING THE NIGHT. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE 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. 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 IMMEDIATELY. && $$ ILZ100>102-MOZ061-063>065-061200- /O.CON.KLSX.HT.Y.0005.110806T1700Z-110808T0000Z/ MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-ST. LOUIS MO- ST. LOUIS CITY MO-JEFFERSON MO- INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE... ST CHARLES...ST LOUIS 340 PM CDT FRI AUG 5 2011 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON SATURDAY TO 7 PM CDT SUNDAY... * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY IS EXPECTED TO RETURN BY SATURDAY AFTERNOON AND CONTINUE UNTIL EARLY SUNDAY EVENING. * HEAT INDEX VALUES...PEAK READINGS OF AROUND 105 TO 110 DURING THE AFTERNOON AND EARLY EVENING HOURS EACH DAY...WITH LITTLE RELIEF DURING THE NIGHT. THE MOST OPPRESSIVE CONDITIONS WILL OCCUR IN THE SAINT LOUIS METRO AREA DUE TO THE URBAN HEAT ISLAND EFFECT. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE 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. 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 IMMEDIATELY. PEOPLE IN THE ST. LOUIS METROPOLITAN AREA CAN GET INFORMATION ABOUT COOLING CENTERS OR ENERGY ASSISTANCE RELATED TO THE EXCESSIVE HEAT BY CALLING THE UNITED WAY OF GREATER ST. LOUIS AT 800-427-4626...OR IF CALLING FROM A LAND LINE PHONE DIAL 2-1-1. YOU CAN ALSO CALL COOL DOWN ST. LOUIS AT 314-241-7668. && $$ GLASS
915 WWUS73 KLSX 060958 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 458 AM CDT SAT AUG 6 2011 ...DANGEROUS HEAT AND HUMIDITY WILL RETURN ON SATURDAY... .THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY WILL RETURN TO THE AREA TODAY AND CONTINUE THROUGH THE SUNDAY. A COLD FRONT PASSING THROUGH THE AREA ON SUNDAY EVENING SHOULD END THE EXCESSIVE HEAT...WITH NEAR NORMAL TEMPERATURES EXPECTED THE FIRST HALF OF NEXT WEEK. ILZ100>102-MOZ061-063>065-062300- /O.CON.KLSX.HT.Y.0005.110806T1700Z-110808T0000Z/ MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-ST. LOUIS MO- ST. LOUIS CITY MO-JEFFERSON MO- INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE... ST CHARLES...ST LOUIS 458 AM CDT SAT AUG 6 2011 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 7 PM CDT SUNDAY... * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY WILL RETURN TO THE AREA THIS AFTERNOON AND CONTINUE UNTIL EARLY SUNDAY EVENING. * HEAT INDEX VALUES...EXPECT PEAK READINGS OF 105 TO 110 DEGREES DURING THE AFTERNOON AND EARLY EVENING HOURS EACH DAY...WITH LITTLE RELIEF TONIGHT. THE MOST OPPRESSIVE CONDITIONS WILL OCCUR IN THE SAINT LOUIS METRO AREA DUE TO THE URBAN HEAT ISLAND EFFECT. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE 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. 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 IMMEDIATELY. PEOPLE IN THE ST. LOUIS METROPOLITAN AREA CAN GET INFORMATION ABOUT COOLING CENTERS OR ENERGY ASSISTANCE RELATED TO THE EXCESSIVE HEAT BY CALLING THE UNITED WAY OF GREATER ST. LOUIS AT 800-427-4626...OR IF CALLING FROM A LAND LINE PHONE DIAL 2-1-1. YOU CAN ALSO CALL COOL DOWN ST. LOUIS AT 314-241-7668. && $$ ILZ069-074-079-MOZ041-047>051-059-060-062-072>075-084-085-099- 062300- /O.CON.KLSX.HT.Y.0005.110806T1700Z-110808T0000Z/ CLINTON IL-WASHINGTON IL-RANDOLPH IL-BOONE MO-MONITEAU MO-COLE MO- OSAGE MO-CALLAWAY MO-MONTGOMERY MO-GASCONADE MO-WARREN MO- FRANKLIN MO-CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO- STE. GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...CHESTER...COLUMBIA...JEFFERSON CITY... UNION...FARMINGTON 458 AM CDT SAT AUG 6 2011 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 7 PM CDT SUNDAY... * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY WILL RETURN TO THE AREA THIS AFTERNOON AND CONTINUE UNTIL EARLY SUNDAY EVENING. * HEAT INDEX VALUES...EXPECT PEAK READINGS OF 105 TO 110 DEGREES DURING THE AFTERNOON AND EARLY EVENING HOURS EACH DAY...WITH LITTLE RELIEF TONIGHT. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE 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. 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 IMMEDIATELY. && $$ BRITT
733 WWUS73 KLSX 062040 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 340 PM CDT SAT AUG 6 2011 ILZ058>060-064-065-070-098-099-MOZ036-042-052-070845- /O.EXB.KLSX.HT.Y.0005.110807T1700Z-110808T0000Z/ GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-MARION IL- CALHOUN IL-JERSEY IL-PIKE MO-AUDRAIN MO-LINCOLN MO- INCLUDING THE CITIES OF...LITCHFIELD...VANDALIA...SALEM... BOWLING GREEN...MEXICO 340 PM CDT SAT AUG 6 2011 ...HEAT ADVISORY IN EFFECT FROM NOON TO 7 PM CDT SUNDAY... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A HEAT ADVISORY...WHICH IS IN EFFECT FROM NOON TO 7 PM CDT SUNDAY. * TIMING...DANGEROUS HEAT AND HUMIDITY WILL RETURN TO THE AREA SUNDAY AFTERNOON AND CONTINUE UNTIL EARLY SUNDAY EVENING. * HEAT INDEX VALUES...EXPECT PEAK READINGS AROUND 105 DEGREES DURING THE AFTERNOON AND EARLY EVENING HOURS. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY. CALL 9-1-1 IMMEDIATELY. && $$ ILZ100>102-MOZ061-063>065-070845- /O.CON.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-ST. LOUIS MO- ST. LOUIS CITY MO-JEFFERSON MO- INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE... ST CHARLES...ST LOUIS 340 PM CDT SAT AUG 6 2011 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SUNDAY... * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY WILL CONTINUE ON SUNDAY AFTERNOON INTO EARLY SUNDAY EVENING. * HEAT INDEX VALUES...EXPECT PEAK READINGS OF 105 TO 110 DEGREES DURING THE AFTERNOON AND EARLY EVENING HOURS. THE MOST OPPRESSIVE CONDITIONS WILL OCCUR IN THE SAINT LOUIS METRO AREA DUE TO THE URBAN HEAT ISLAND EFFECT. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE 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. 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 IMMEDIATELY. PEOPLE IN THE ST. LOUIS METROPOLITAN AREA CAN GET INFORMATION ABOUT COOLING CENTERS OR ENERGY ASSISTANCE RELATED TO THE EXCESSIVE HEAT BY CALLING THE UNITED WAY OF GREATER ST. LOUIS AT 800-427-4626...OR IF CALLING FROM A LAND LINE PHONE DIAL 2-1-1. YOU CAN ALSO CALL COOL DOWN ST. LOUIS AT 314-241-7668. && $$ ILZ069-074-079-MOZ041-047>051-059-060-062-072>075-084-085-099- 070845- /O.CON.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ CLINTON IL-WASHINGTON IL-RANDOLPH IL-BOONE MO-MONITEAU MO-COLE MO- OSAGE MO-CALLAWAY MO-MONTGOMERY MO-GASCONADE MO-WARREN MO- FRANKLIN MO-CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO- STE. GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...CHESTER...COLUMBIA...JEFFERSON CITY... UNION...FARMINGTON 340 PM CDT SAT AUG 6 2011 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SUNDAY... * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY WILL CONTINUE ON SUNDAY AFTERNOON INTO EARLY SUNDAY EVENING. * HEAT INDEX VALUES...EXPECT PEAK READINGS OF 105 TO 110 DEGREES DURING THE AFTERNOON AND EARLY EVENING. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY. CALL 9-1-1 IMMEDIATELY. && $$ CARNEY
565 WWUS73 KLSX 070908 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 408 AM CDT SUN AUG 7 2011 ILZ100>102-MOZ061-063>065-080000- /O.CON.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-ST. LOUIS MO- ST. LOUIS CITY MO-JEFFERSON MO- INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE... ST CHARLES...ST LOUIS 408 AM CDT SUN AUG 7 2011 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY IS EXPECTED AGAIN THIS AFTERNOON. * HEAT INDEX VALUES...EXPECT PEAK READINGS OF 105 TO 110 DEGREES THIS AFTERNOON. THE MOST OPPRESSIVE CONDITIONS WILL OCCUR IN THE SAINT LOUIS METRO AREA DUE TO THE URBAN HEAT ISLAND EFFECT. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE 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. 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 IMMEDIATELY. PEOPLE IN THE ST. LOUIS METROPOLITAN AREA CAN GET INFORMATION ABOUT COOLING CENTERS OR ENERGY ASSISTANCE RELATED TO THE EXCESSIVE HEAT BY CALLING THE UNITED WAY OF GREATER ST. LOUIS AT 800-427-4626...OR IF CALLING FROM A LAND LINE PHONE DIAL 2-1-1. YOU CAN ALSO CALL COOL DOWN ST. LOUIS AT 314-241-7668. && $$ ILZ058>060-064-065-070-098-099-MOZ036-042-052-080000- /O.CON.KLSX.HT.Y.0005.110807T1700Z-110808T0000Z/ GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-MARION IL- CALHOUN IL-JERSEY IL-PIKE MO-AUDRAIN MO-LINCOLN MO- INCLUDING THE CITIES OF...LITCHFIELD...VANDALIA...SALEM... BOWLING GREEN...MEXICO 408 AM CDT SUN AUG 7 2011 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS EVENING... * TIMING...DANGEROUS HEAT AND HUMIDITY IS EXPECTED THIS AFTERNOON. * HEAT INDEX VALUES...EXPECT PEAK READINGS AROUND 105 DEGREES THIS AFTERNOON. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY. CALL 9-1-1 IMMEDIATELY. && $$ ILZ069-074-079-MOZ041-047>051-059-060-062-072>075-084-085-099- 080000- /O.CON.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ CLINTON IL-WASHINGTON IL-RANDOLPH IL-BOONE MO-MONITEAU MO-COLE MO- OSAGE MO-CALLAWAY MO-MONTGOMERY MO-GASCONADE MO-WARREN MO- FRANKLIN MO-CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO- STE. GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...CHESTER...COLUMBIA...JEFFERSON CITY... UNION...FARMINGTON 408 AM CDT SUN AUG 7 2011 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY WILL CONTINUE THIS AFTERNOON. * HEAT INDEX VALUES...EXPECT PEAK READINGS OF 105 TO 110 DEGREES THIS AFTERNOON. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE 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. 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 IMMEDIATELY. && $$ BRITT
639 WWUS73 KLSX 072053 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 353 PM CDT SUN AUG 7 2011 ILZ058>060-064-065-070-098-099-MOZ036-042-052-080000- /O.CON.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-MARION IL- CALHOUN IL-JERSEY IL-PIKE MO-AUDRAIN MO-LINCOLN MO- INCLUDING THE CITIES OF...LITCHFIELD...VANDALIA...SALEM... BOWLING GREEN...MEXICO 353 PM CDT SUN AUG 7 2011 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * TIMING...DANGEROUS HEAT AND HUMIDITY IS EXPECTED THROUGH EARLY THIS EVENING. * HEAT INDEX VALUES...EXPECT PEAK READINGS AROUND 105 DEGREES THROUGH THE LATER PART OF THIS AFTERNOON. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY. CALL 9-1-1 IMMEDIATELY. && $$ ILZ100>102-MOZ061-063>065-080000- /O.CON.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-ST. LOUIS MO- ST. LOUIS CITY MO-JEFFERSON MO- INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE... ST CHARLES...ST LOUIS 353 PM CDT SUN AUG 7 2011 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY IS EXPECTED THROUGH EARLY THIS EVENING. * HEAT INDEX VALUES...EXPECT PEAK READINGS OF 105 TO 110 DEGREES DURING THE LATER PART OF THIS AFTERNOON. THE MOST OPPRESSIVE CONDITIONS WILL OCCUR IN THE SAINT LOUIS METRO AREA DUE TO THE URBAN HEAT ISLAND EFFECT. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE 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. 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 IMMEDIATELY. PEOPLE IN THE ST. LOUIS METROPOLITAN AREA CAN GET INFORMATION ABOUT COOLING CENTERS OR ENERGY ASSISTANCE RELATED TO THE EXCESSIVE HEAT BY CALLING THE UNITED WAY OF GREATER ST. LOUIS AT 800-427-4626...OR IF CALLING FROM A LAND LINE PHONE DIAL 2-1-1. YOU CAN ALSO CALL COOL DOWN ST. LOUIS AT 314-241-7668. && $$ ILZ069-074-079-MOZ041-047>051-059-060-062-072>075-084-085-099- 080000- /O.CON.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ CLINTON IL-WASHINGTON IL-RANDOLPH IL-BOONE MO-MONITEAU MO-COLE MO- OSAGE MO-CALLAWAY MO-MONTGOMERY MO-GASCONADE MO-WARREN MO- FRANKLIN MO-CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO- STE. GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...CHESTER...COLUMBIA...JEFFERSON CITY... UNION...FARMINGTON 353 PM CDT SUN AUG 7 2011 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * TIMING...THE DANGEROUS COMBINATION OF HEAT AND HUMIDITY WILL CONTINUE UNTIL EARLY THIS EVENING. * HEAT INDEX VALUES...EXPECT PEAK READINGS OF 105 TO 110 DEGREES DURING THE LATER PART OF THIS AFTERNOON. * IMPACTS...THESE HIGH LEVELS OF HEAT AND HUMIDITY WILL THREATEN THE HEALTH OF THE PUBLIC...ESPECIALLY THE VERY YOUNG...THE ELDERLY...AND THOSE WITH CHRONIC HEALTH PROBLEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO THE EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY. CALL 9-1-1 IMMEDIATELY. && $$ GLASS
277 WWUS73 KLSX 080000 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 700 PM CDT SUN AUG 7 2011 ILZ058>060-064-065-070-098-099-MOZ036-042-052-080100- /O.EXP.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-MARION IL- CALHOUN IL-JERSEY IL-PIKE MO-AUDRAIN MO-LINCOLN MO- INCLUDING THE CITIES OF...LITCHFIELD...VANDALIA...SALEM... BOWLING GREEN...MEXICO 700 PM CDT SUN AUG 7 2011 ...HEAT ADVISORY WILL EXPIRE AT 7 PM CDT THIS EVENING... HEAT LEVELS HAVE DROPPED BELOW DANGEROUS LEVELS AND MORE SEASONABLE TEMPERATURES AND LOWER HUMIDITY IS EXPECTED TO BECOME ESTABLISHED THIS WEEK. $$ ILZ100>102-MOZ061-063>065-080100- /O.EXP.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-ST. LOUIS MO- ST. LOUIS CITY MO-JEFFERSON MO- INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE... ST CHARLES...ST LOUIS 700 PM CDT SUN AUG 7 2011 ...HEAT ADVISORY WILL EXPIRE AT 7 PM CDT THIS EVENING... HEAT LEVELS HAVE DROPPED BELOW DANGEROUS LEVELS AND MORE SEASONABLE TEMPERATURES AND LOWER HUMIDITY IS EXPECTED TO BECOME ESTABLISHED THIS WEEK. $$ ILZ069-074-079-MOZ041-047>051-059-060-062-072>075-084-085-099- 080100- /O.EXP.KLSX.HT.Y.0005.000000T0000Z-110808T0000Z/ CLINTON IL-WASHINGTON IL-RANDOLPH IL-BOONE MO-MONITEAU MO-COLE MO- OSAGE MO-CALLAWAY MO-MONTGOMERY MO-GASCONADE MO-WARREN MO- FRANKLIN MO-CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO- STE. GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...CHESTER...COLUMBIA...JEFFERSON CITY... UNION...FARMINGTON 700 PM CDT SUN AUG 7 2011 ...HEAT ADVISORY WILL EXPIRE AT 7 PM CDT THIS EVENING... HEAT LEVELS HAVE DROPPED BELOW DANGEROUS LEVELS AND MORE SEASONABLE TEMPERATURES AND LOWER HUMIDITY IS EXPECTED TO BECOME ESTABLISHED THIS WEEK. $$ GLASS
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS St. Louis, MO wrote its last area forecast discussion before this heat advisory went out at Aug 4, 11:42 PM CDT, 4 hours 28 minutes earlier.
Area forecast discussion, Aug 4, 11:42 PM CDT, 4 hours 28 minutes before
AREA FORECAST DISCUSSION...UPDATED AVIATION NATIONAL WEATHER SERVICE ST LOUIS MO 1142 PM CDT THU AUG 4 2011 .DISCUSSION... /330 PM CDT THU AUG 4 2011/ REMNANTS OF LAST NIGHT'S MCS ARE NEARLY OUT OF THE SOUTHERN PORTION OF THE CWFA IN SOUTHEAST MISSOURI. THICK CONVECTIVE DEBRIS CLOUDS HAVE HELPED TO SUPPRESS TEMPERATURES ACROSS THE AREA TODAY. THE SHORTWAVE WHICH SPAWNED THIS MCS LAST NIGHT IS CONTINUING TO DRIFT ACROSS NORTHERN MISSOURI...AND ADDITIONAL THUNDERSTORM ACTIVITY IS EXPECTED TONIGHT. HOWEVER...AM NOT CONFIDENT ON TIMING OR AREAL COVERAGE OF THUNDERSTORM ACTIVITY TONIGHT. THE GFS LOOKS TO HAVE FAR TOO MUCH CONVECTIVE FEEDBACK TO BE TRUSTWORTHY...BUT THE NAM AND SREF ARE TELLING ABOUT THE SAME STORY WITH NEW DEVELOPMENT BEGINNING IN THE EVENING OVER NORTHERN MISSOURI AND SPREADING EAST/SOUTHEAST ALONG THE MISSISSIPPI RIVER AS A 20-30KT LLJ INTERSECTS THE 850MB BAROCLINIC ZONE. AGAIN...RAINFALL AMOUNTS MAY BE A BIT OVERBAKED...BUT THE NAM LOOKS MORE REALISTIC THAN THE GFS. THINK TEMPERATURES WILL STAY SUPPRESSED ON FRIDAY AGAIN DUE TO CONVECTIVE DEBRIS AND LINGERING SHOWERS SO A COMPROMISE BETWEEN THE MAV AND MET MOS LOOKED REASONABLE. WEEKEND PRECIPITATION CHANCES ARE LESS CERTAIN...BUT CAN'T RULE OUT RAIN EITHER SATURDAY OR SUNDAY. THE PERSISTENT UPPER RIDGE WILL BE BREAKING DOWN AND THE FLOW ALOFT WILL TURN TO THE NORTHWEST. GFS CONTINUES TO BE PLAGUED WITH CONVECTIVE FEEDBACK THROUGH THE WEEKEND INTO NEXT WEEK WITH SEVERAL VORTICITY BULLSEYES AND PRECIPITATION MAXIMA POPPING UP OVER THE GREAT PLAINS AND MIGRATING INTO THE MID AND LOWER MISSISSIPPI VALLEY. THE NAM IS DRIER WITH THE MAIN SHORTWAVE TRACK STAYING FURTHER NORTH ACROSS THE UPPER MIDWEST...BUT IT DOES PRINT OUT PRECIP OVER THE AREA SATURDAY AFTERNOON AND AGAIN SUNDAY AFTERNOON. WHILE A TOTALLY DRY WEEKEND FORECAST SEEMS UNLIKELY...I THINK THE NAM IS THE MORE LIKELY SOLUTION DUE TO THE CONVECTIVE FEEDBACK ISSUES WITH THE GFS. RIDGE CONTINUES TO RETROGRADE THROUGH THURSDAY WITH A DEEP LONGWAVE TROF SETTING UP OVER THE EASTERN HALF OF THE COUNTRY. TEMPERATURES WILL CONTINUE TO MODERATE...AND EVEN FALL SLIGHTLY BELOW NORMAL. BEST CHANCE FOR PRECIP WILL BE ON TUESDAY AND TUESDAY NIGHT AHEAD OF THE NEXT COLD FRONT. CARNEY && .AVIATION... /1115 PM CDT THU AUG 4 2011/ MOST OF THE SHRA/TSRA STILL ACROSS N CNTRL MO WITH WIDELY SCATTERED SHOWERS OR SPRINKLES FROM MID LEVEL CLOUD DECK FURTHER S FROM JUST NW OF COU TO JUST N OF STL. THE SLOW MOVING SHRA/TSRA OVER N CNTRL MO MAY EVENTUALLY DROP SEWD INTO COU AND UIN LATE TGT ALTHOUGH THIS ACTIVITY APPEARS TO BE WEAKENING. MAY ALSO CONTINUE TO BE SCATTERED SHOWERS AND A FEW STORMS LATE TGT AND EARLY FRI MRNG ELSEWHERE. WILL LIKELY NEED AT LEAST A VCSH OR VCTS DEPENDING ON THE LATEST RADAR TRENDS. A LOT OF UNCERTAINTY WITH LOCATION AND TIMING OF ADDITIONAL CONVECTION TOWARDS MRNG AND FOR FRI. OTHERWISE MAINLY LOW-MID LEVEL VFR CLOUDS FOR LATE TGT AT THE TAF LOCATIONS. THERE MAY BE ENOUGH LOW LEVEL MOISTURE FOR A VFR LOW LEVEL CLOUD CEILING FOR MUCH OF THE DAY ON FRI ALTHOUGH THE LATEST MOS GUIDANCE IS NOT AS LOW ON CIG HEIGHTS AS THE PREVIOUS GUIDANCE. SFC WINDS SHOULD BE RELATIVELY LIGHT AND VARIABLE BUT MAINLY E-SELY LATE TGT AND E-NELY ON FRI WITH THE SFC RIDGE CENTERED OVER THE GREAT LAKES AND NERN US. SPECIFICS FOR KSTL...MAINLY JUST MID LEVEL CLOUDS AND A LIGHT SELY SFC WIND FOR LATE TGT. WILL INCLUDE VCTS OR VCSH IN THE STL TAF FOR LATE TGT AND EARLY FRI MRNG AS AT LEAST SCATTERED CONVECTION IS EXPECTED IN THE STL METRO AREA. VFR LOW LEVEL CLOUD CEILING MAY DEVELOP BY LATE FRI MRNG OR EARLY AFTN WITH MODELS DEPICTING PLENTY OF MOISTURE AROUND 850 MB OR AROUND 5000 FT IN HEIGHT. WIND SHOULD CONTINUE LIGHT ON FRI MAINLY FROM A E-NELY DIRECTION. GKS && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
Hazardous weather outlook, Aug 4, 3:56 PM CDT, 12 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 356 PM CDT THU AUG 4 2011 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-051215- GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL- MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL- CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO- LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- 356 PM CDT THU AUG 4 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT THUNDERSTORMS ARE LIKELY ACROSS MUCH OF EASTERN MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS TONIGHT. THERE IS A CHANCE FOR THUNDERSTORMS OVER THE REMAINDER OF THE AREA. THE STORMS ARE NOT EXPECTED TO BE SEVERE. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A CHANCE FOR THUNDERSTORMS OVER PARTS OF THE AREA FRIDAY THROUGH SUNDAY EACH AFTERNOON. THUNDERSTORMS ARE POSSIBLE AGAIN ON MONDAY NIGHT THROUGH TUESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. CARNEY
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 1:41 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Monroe, Randolph, Saint Clair, Washington | 49 min |
Nearby
Heat Advisories in Missouri, 2011Heat Advisories in Illinois, 2011Every heat advisory 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.