Alert archive / Missouri / Excessive Heat Warnings in 2010
Excessive Heat Warning 1, NWS St. Louis, MO
NWS St. Louis, MO issued this excessive heat warning at Jun 19, 2010, 2:42 AM CDT for 4 counties in Missouri; Madison County, Monroe County, Saint Clair County, Illinois. It was in force for 5 days. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 19, 2010, 2:42 AM CDT (07:42 UTC)
- Expired
- Jun 23, 2010, 7:00 PM CDT
- In force
- 5 days
- Issued by
- NWS St. Louis, MO
Counties Madison County, IL, Monroe County, IL, Saint Clair County, IL, City of Saint Louis, MO, Jefferson County, MO, Saint Charles County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 40 km from the middle of the area, began a volume at 07:45 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
Davenport, (KDVN), launched 00:00Z, 7.7 hours before the alert went out and 341 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
- 1389 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1139 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 231 m²/s²
- 0-3 km storm-relative helicity
- 325 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.4
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 St. Louis, MO wrote its last area forecast discussion before this excessive heat warning went out at Jun 19, 2:33 AM CDT, 9 minutes earlier.
Area forecast discussion, Jun 19, 2:33 AM CDT, 9 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 831 PM CDT FRI JUN 18 2010 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-191200- 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- 831 PM CDT FRI JUN 18 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT THUNDERSTORMS WILL BE LIKELY...MAINLY FOR PARTS OF NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS. SOME STORMS MAY BE SEVERE...CONTAINING DAMAGING WINDS AND LARGE HAIL...FOR AREAS NORTH OF INTERSTATE 70 WHERE THERE IS A SLIGHT RISK. FOR FURTHER INFORMATION ON CONVECTIVE WATCHES...PLEASE REFER TO THE LATEST STORM PREDICTION CENTER WATCH PRODUCTS. A WARM AND MUGGY NIGHT IS EXPECTED THAT WILL OFFER LITTLE RELIEF FROM THE HOT DAY ON FRIDAY. LOW TEMPERATURES WILL ONLY DROP INTO THE MID TO UPPER 70S. A HEAT ADVISORY CONTINUES FOR MOST OF EAST CENTRAL AND SOUTHEAST MISSOURI AND SOUTHWEST ILLINOIS...INCLUDING THE SAINT LOUIS METRO AREA. FOR FURTHER INFORMATION...PLEASE REFER TO THE ADVISORY PRODUCT. MODERATE RIVER FLOODING IS OCCURRING ALONG PORTIONS OF THE LA MOINE RIVER AT RIPLEY...THE MISSISSIPPI RIVER AT CHESTER...AND PARTS OF THE MISSOURI RIVER. PLEASE SEE THE APPROPRIATE FLOOD STATEMENTS FOR SPECIFIC DETAILS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THERE IS A CHANCE FOR THUNDERSTORMS ACROSS MUCH OF THE AREA THROUGH SUNDAY NIGHT...ESPECIALLY FOR PARTS OF NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS. SOME STORMS MAY BE SEVERE ON SUNDAY AND SUNDAY NIGHT. DANGEROUS LEVELS OF HEAT AND HUMIDITY WILL PERSIST INTO NEXT WEEK...WITH HEAT INDEX VALUES EXPECTED TO TOP 100 DEGREES EACH DAY THROUGH AT LEAST MONDAY...WITH THE POTENTIAL OF CONTINUING INTO LATE NEXT WEEK. THIS WILL ESPECIALLY BE THE CASE FOR MOST OF EAST CENTRAL AND SOUTHEAST MISSOURI AND SOUTHWEST ILLINOIS...INCLUDING THE SAINT LOUIS METRO AREA...WHERE A HEAT ADVISORY REMAINS IN EFFECT THROUGH LATE MONDAY AFTERNOON. FOR FURTHER INFORMATION... PLEASE REFER TO THE ADVISORY PRODUCT.LITTLE RELIEF WILL OCCUR AT NIGHT WITH WARM AND MUGGY CONDITIONS. MODERATE RIVER FLOODING IS OCCURRING ALONG PORTIONS OF THE LA MOINE RIVER AT RIPLEY...THE MISSISSIPPI RIVER AT CHESTER...AND PARTS OF THE MISSOURI RIVER. PLEASE SEE THE APPROPRIATE FLOOD STATEMENTS FOR SPECIFIC DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS LIKELY FOR PARTS OF NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS THIS EVENING...AND MAY OCCUR AS FAR SOUTH AS INTERSTATE 70 LATER TONIGHT. && FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1 TES
In the hours before
Local storm report, Jun 19, 2:04 AM CDT, 38 minutes before
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</html>Local storm report, Jun 19, 2:20 AM CDT, 22 minutes before
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</html>Local storm report, Jun 19, 2:38 AM CDT, 4 minutes before
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</html>The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 11:50 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis, Marion, Monroe, Shelby | 40 min |
| Jun 19, 1:28 AM CDT | Severe Thunderstorm Warning | LSX | Boone, Moniteau | 26 min |
| Jun 19, 11:49 AM CDT | River Flood Warning | LSX | Lewis | 68 days |
| Jun 19, 11:49 AM CDT | River Flood Warning | LSX | Marion | 29 days |
| Jun 19, 11:49 AM CDT | River Flood Warning | LSX | Marion | 27 days |
| Jun 19, 2:32 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Cole, Moniteau | 28 min |
| Jun 19, 2:56 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Cole, Osage | 34 min |
| Jun 19, 3:29 AM CDT | Areal Flood Advisory | LSX | Bond, Clinton | 6 hr |
| Jun 19, 4:06 AM CDT | Areal Flood Advisory | LSX | Washington | 6 hr |
Nearby
Excessive Heat Warnings in Missouri, 2010Excessive Heat Warnings in Illinois, 2010Every excessive heat warning in 2010
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.