Alert archive / Missouri / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 179, NWS Springfield, MO

July 21, 2010Dallas County, Greene County, Webster County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 21, 2010, 3:08 PM CDT for Dallas County, Greene County, Webster County, Missouri. It was in force for 67 min. 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 21, 2010, 3:08 PM CDT (20:08 UTC)
Expired: Jul 21, 2010, 4:15 PM CDT
In force: 67 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon

Counties Dallas County, MO, Greene County, MO, Webster County, MO

The radar

The Springfield radar (KSGF), 34 km from the middle of the area, began a volume at 20:08 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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Springfield, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 2:19 PM CDT, 49 minutes earlier.

Area forecast discussion, Jul 21, 2:19 PM CDT, 49 minutes before

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Hazardous weather outlook, Jul 21, 11:08 AM CDT, 4 hours before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1108 AM CDT WED JUL 21 2010

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-221615-
BOURBON-CRAWFORD-CHEROKEE-BENTON-MORGAN-MILLER-MARIES-VERNON-
ST. CLAIR-HICKORY-CAMDEN-PULASKI-PHELPS-BARTON-CEDAR-POLK-DALLAS-
LACLEDE-TEXAS-DENT-JASPER-DADE-GREENE-WEBSTER-WRIGHT-NEWTON-
LAWRENCE-CHRISTIAN-DOUGLAS-HOWELL-SHANNON-MCDONALD-BARRY-STONE-
TANEY-OZARK-OREGON-
1108 AM CDT WED JUL 21 2010

...HOT AND HUMID CONDITIONS PERSISTING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE MISSOURI
OZARKS AND EXTREME SOUTHEAST KANSAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

  THE HAZARDOUS WEATHER RISK LEVEL IS...SIGNIFICANT.

WEATHER HAZARDS EXPECTED...

  SIGNIFICANT EXTREME HEAT RISK.
  ELEVATED THUNDERSTORM WIND RISK FOR GUSTS IN EXCESS OF 60 MPH.
  LIMITED FLOODING RISK.
  LIMITED HAIL RISK FOR HAIL TO THE SIZE OF QUARTERS.
  LIMITED LIGHTNING RISK.

DISCUSSION...

  ISOLATED TO SCATTERED THUNDERSTORMS WILL DEVELOP THIS
  AFTERNOON...WITH THE BEST COVERAGE OF THUNDERSTORMS EXPECTED
  TO BE ACROSS CENTRAL MISSOURI. ALTHOUGH WIND SHEAR WILL BE
  WEAK...STRONG INSTABILITY WILL LEAD TO AN ELEVATED RISK OF
  WIND GUSTS IN EXCESS OF 60 MPH...ESPECIALLY ALONG AND NORTH
  OF A NEVADA TO SPRINGFIELD TO WEST PLAINS LINE. IN
  ADDITION...HIGH MOISTURE CONTENT IN THE ATMOSPHERE AND THE
  EXPECTED SLOW MOVEMENT OF THUNDERSTORMS WILL RESULT IN
  LOCALLY HEAVY RAINFALL...AND A LIMITED RISK FOR FLASH
  FLOODING. A FEW STORMS MAY ALSO PRODUCE HAIL TO THE SIZE OF
  QUARTERS. MOST OF THE THUNDERSTORM ACTIVITY IS EXPECTED TO
  DIMINISH BY MID EVENING.

  HOT AND HUMID CONDITIONS WILL CONTINUE TODAY WITH HIGHS IN THE
  90S AND AFTERNOON HEAT INDEX VALUES IN THE 100 TO 106 RANGE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

  EXCESSIVE HEAT WILL CONTINUE THROUGH THE REST OF THE WORK WEEK.
  HEAT INDEX VALUES IN THE 100 TO 108 DEGREE RANGE WILL BE COMMON
  EACH AFTERNOON. HEAT INDEX VALUES AT OR ABOVE 95 DEGREES WILL
  THEN BE POSSIBLE INTO AT LEAST EARLY NEXT WEEK.

  THUNDERSTORMS WILL AGAIN BE POSSIBLE FROM LATE FRIDAY INTO
  NEXT TUESDAY.

.SPOTTER INFORMATION STATEMENT...

  SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EARLY THIS
  EVENING...GENERALLY ALONG AND NORTH OF A NEVADA TO SPRINGFIELD
  TO WEST PLAINS LINE.

&&

THIS PRODUCT IS NOW AVAILABLE IN GRAPHICAL FORMAT...ALONG WITH
OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION...AT
HTTP://WWW.CRH.NOAA.GOV/SGF(ALL LOWERCASE)

SCHAUMANN

In the hours before

Local storm report, Jul 21, 2:39 PM CDT, 29 minutes before

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Local storm report, Jul 21, 2:42 PM CDT, 26 minutes before

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The office that day

Everything else NWS Springfield, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 20, 7:43 PM CDT	Severe Thunderstorm Warning	SGF	Benton, Camden, Hickory, Miller, Morgan	34 min
Jul 20, 9:28 PM CDT	Severe Thunderstorm Warning	SGF	Maries, Miller, Phelps, Pulaski	62 min
Jul 21, 5:39 PM CDT	Flash Flood Warning	SGF	Dent, Phelps, Pulaski	4 hr
Jul 21, 6:10 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Maries, Miller, Phelps, Pulaski	54 min
Jul 21, 6:36 PM CDT	Flash Flood Warning	SGF	Camden, Maries, Miller, Pulaski	3 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2010 Every severe thunderstorm 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; radar from the NEXRAD Level II archive.