Alert archive / Missouri / Heat Advisories in 2006
Heat Advisory 4, NWS St. Louis, MO
NWS St. Louis, MO issued this heat advisory at Jul 18, 2006, 3:51 PM CDT for Iron County, Madison County, Reynolds County, Missouri. It was in force for 51 hr.
The area
The counties it named.
The facts
- Issued
- Jul 18, 2006, 3:51 PM CDT (20:51 UTC)
- Expired
- Jul 20, 2006, 7:00 PM CDT
- In force
- 51 hr
- Issued by
- NWS St. Louis, MO
Counties Iron County, MO, Madison County, MO, Reynolds County, MO
The radar
The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 20:51 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
Springfield, MO (KSGF), launched 12:00Z, 8.9 hours before the alert went out and 284 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
- 848 J/kg
- Mixed-layer CIN
- -293 J/kg
- Mixed-layer LCL
- 1983 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Jul 18, 12:22 PM CDT, 3 hours 29 minutes earlier.
Area forecast discussion, Jul 18, 12:22 PM CDT, 3 hours 29 minutes before
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</html>Hazardous weather outlook, Jul 18, 3:45 PM CDT, 6 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 345 PM CDT TUE JUL 18 2006 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-191100- ADAMS IL-AUDRAIN-BOND IL-BOONE-BROWN-CALHOUN IL-CALLAWAY-CLINTON IL- COLE-CRAWFORD-FAYETTE IL-FRANKLIN-GASCONADE-GREENE IL-JEFFERSON- JERSEY IL-KNOX-LEWIS-LINCOLN-MACOUPIN IL-MADISON IL-MARION-MARION IL- MONITEAU-MONROE-MONROE IL-MONTGOMERY-MONTGOMERY IL-OSAGE-PIKE- PIKE IL-RALLS-RANDOLPH IL-SHELBY-ST CHARLES-ST CLAIR IL-ST FRANCOIS- ST LOUIS-ST LOUIS CITY-STE GENEVIEVE-WARREN-WASHINGTON-WASHINGTON IL- 324 PM CDT TUE JUL 18 2006 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THURSDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...CENTRAL MISSOURI...EAST CENTRAL MISSOURI AND NORTHEAST MISSOURI. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS EVENING. DUE TO THE HIGH AMOUNTS OF INSTABILITY AVAILABLE...SOME OF THE STORMS THAT DO FORM MAY BECOME SEVERE FOR SHORT PERIODS OF TIME...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY HEAT AND HUMIDITY LEVELS WILL REMAIN VERY HIGH THROUGH THURSDAY... WITH HIGH TEMPERATURES FROM 95 TO 100 AND HEAT INDICES FROM 105 TO 115 EACH AFTERNOON AND EARLY EVENING. THE CHANCE FOR THUNDERSTORMS WILL RETURN AREAWIDE ON FRIDAY THROUGH SATURDAY AS A COLD FRONT PUSHES ACROSS THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THROUGH THIS EVENING. MOZ084-085-099-191100- IRON-MADISON-REYNOLDS- 324 PM CDT TUE JUL 18 2006 ...A HEAT ADVISORY IS IN EFFECT UNTIL 7 PM CDT THURSDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MISSOURI. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS EVENING. ISOLATED THUNDERSTORMS WILL BE POSSIBLE AS A COLD FRONT PUSHES SOUTH THROUGH THE AREA. DUE TO THE HIGH AMOUNTS OF INSTABILITY AVAILABLE... SOME OF THE STORMS THAT DO FORM MAY BECOME SEVERE FOR SHORT PERIODS OF TIME...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY HEAT AND HUMIDITY LEVELS WILL REMAIN HIGH THROUGH THURSDAY... WITH HIGH TEMPERATURES IN THE MID TO UPPER 90S AND HEAT INDICES APPROACHING 105 DEGREES DURING THE AFTERNOON AND EARLY EVENING. THE CHANCE FOR THUNDERSTORMS WILL RETURN ON FRIDAY AND PERSIST THROUGH SATURDAY AS A COLD FRONT PUSHES THROUGH THE REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING.
In the hours before
Local storm report, Jul 18, 10:39 AM CDT, 5 hours 12 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 |
|---|---|---|---|---|
| Jul 18, 4:59 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve, Saint Francois | 46 min |
| Jul 18, 5:54 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison | 51 min |
| Jul 18, 5:55 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 50 min |
| Jul 18, 6:45 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 45 min |
| Jul 18, 6:29 AM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 46 min |
| Jul 18, 7:19 AM CDT | Severe Thunderstorm Warning | LSX | Fayette | 32 min |
| Jul 18, 7:23 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 52 min |
| Jul 18, 8:04 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Madison | 41 min |
| Jul 18, 8:16 AM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 29 min |
| Jul 18, 8:32 AM CDT | Severe Thunderstorm Warning | LSX | Clinton | 43 min |
| Jul 18, 9:12 AM CDT | Severe Thunderstorm Warning | LSX | Washington | 48 min |
| Jul 18, 9:40 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion | 50 min |
Nearby
Heat Advisories in Missouri, 2006Every heat advisory in 2006
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.