Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 109, NWS Green Bay, WI

July 17, 2007Lincoln County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 17, 2007, 7:10 PM CDT for Lincoln County, Wisconsin. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 17, 2007, 7:10 PM CDT (00:10 UTC)
Expired: Jul 17, 2007, 7:45 PM CDT
In force: 35 min
Issued by: NWS Green Bay, WI
Area: Counties, with a storm outline in the text

County Lincoln County, WI

The radar

The Green Bay radar (KGRB), 171 km from the middle of the area, began a volume at 00:10 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.2 hours before the alert went out and 173 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1122 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 800 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KGRB 180011
SVRGRB
WIC069-180045-
/O.NEW.KGRB.SV.W.0109.070718T0010Z-070718T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
710 PM CDT TUE JUL 17 2007

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWEST LINCOLN COUNTY IN NORTH CENTRAL WISCONSIN...

* UNTIL 745 PM CDT

* AT 706 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING HAIL UP TO 1 INCH IN DIAMETER...AND WINDS TO
  60 MPH.  THIS STORM WAS LOCATED 17 MILES NORTHWEST OF MERRILL...OR
  ABOUT 20 MILES NORTHEAST OF MEDFORD...AND MOVING SOUTHEAST AT 35
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RURAL LINCOLN COUNTY AT 720 PM
  COUNCIL GROUNDS STATE PARK AT 725 PM

SEVERE THUNDERSTORMS PRODUCE STRONG WINDS AND HAIL. STAY AWAY FROM
WINDOWS UNTIL THE STORM PASSES. IF OUTDOORS...GO TO A STURDY SHELTER.

CAMPERS AND OTHERS OUTDOORS SHOULD SEEK SHELTER IN A STURDY BUILDING
IMMEDIATELY.

LAT...LON 4555 8994 4555 9004 4514 9003 4514 8960
      4541 8971

$$

KIECKBUSCH

3 follow-up statements

000 
WWUS53 KGRB 180024
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
723 PM CDT TUE JUL 17 2007

WIC069-180045-
/O.CON.KGRB.SV.W.0109.000000T0000Z-070718T0045Z/
LINCOLN-
723 PM CDT TUE JUL 17 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT 
FOR SOUTHWEST LINCOLN COUNTY...

AT 719 PM...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING HAIL UP TO 1 INCH IN DIAMETER...AND WINDS TO 60
MPH.  THIS STORM WAS LOCATED 13 MILES WEST OF MERRILL...OR ABOUT 20 
MILES EAST OF MEDFORD...MOVING SOUTHEAST AT 30 MPH. THIS STORM WILL
CROSS HIGHWAY 64 IN THE FAR SOUTHWEST PART OF THE COUNTY.

SEVERE THUNDERSTORMS PRODUCE STRONG WINDS AND HAIL. STAY AWAY FROM
WINDOWS UNTIL THE STORM PASSES. IF OUTDOORS...GO TO A STURDY SHELTER.

CAMPERS AND OTHERS SHOULD SEEK SHELTER IN A STURDY BUILDING
IMMEDIATELY.

LAT...LON 4555 8994 4555 9004 4514 9003 4514 8960
      4541 8971

$$
KIECKBUSCH

000 
WWUS53 KGRB 180033
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
733 PM CDT TUE JUL 17 2007

WIC069-180045-
/O.CON.KGRB.SV.W.0109.000000T0000Z-070718T0045Z/
LINCOLN-
733 PM CDT TUE JUL 17 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT 
FOR SOUTHWEST LINCOLN COUNTY...

AT 731 PM...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING HAIL UP TO 1 INCH IN DIAMETER...AND WINDS TO 60 
MPH.  THIS STORM WAS CROSSING HIGHWAY 64 ABOUT 14 MILES WEST OF 
MERRILL...MOVING SOUTH AT 25 MPH.

SEVERE THUNDERSTORMS PRODUCE STRONG WINDS AND HAIL. STAY AWAY FROM
WINDOWS UNTIL THE STORM PASSES. IF OUTDOORS...GO TO A STURDY SHELTER.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY AND ASK
THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4555 8994 4555 9004 4514 9003 4514 8960
      4541 8971

$$

KIECKBUSCH

000 
WWUS53 KGRB 180042
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
742 PM CDT TUE JUL 17 2007

WIC069-180052-
/O.EXP.KGRB.SV.W.0109.000000T0000Z-070718T0045Z/
LINCOLN-
742 PM CDT TUE JUL 17 2007

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWEST LINCOLN COUNTY 
EXPIRES AT 745 PM CDT...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED OUT OF 
THE AREA. SO FAR...THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER OVER
THE SPARSELY POPULATED AREAS OF SOUTHWEST LINCOLN COUNTY.

LAT...LON 4555 8994 4555 9004 4514 9003 4514 8960
      4541 8971

$$

KIECKBUSCH

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 Green Bay, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 17, 3:40 PM CDT, 3 hours 30 minutes earlier.

Area forecast discussion, Jul 17, 3:40 PM CDT, 3 hours 30 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
340 PM CDT TUE JUL 17 2007

.SHORT TERM...TNGT AND WED. WEAK SOUTHEASTERLY WIND PULLED
H925-850 MOISTURE NORTH OVER THE REGION TODAY...WHICH PRODUCED
SCATTERED CLOUDS ACROSS CENTRAL WISCONSIN. FARTHER TO THE
NORTH...DIFFERENTIAL HEATING FROM THE CLOUDS TO THE SOUTH AND THE
SUNNY TO PARTLY CLOUDY SKIES TO THE NORTH PRODUCED SEVERAL SLOW
MOVING SHOWERS AND THUNDERSTORMS...WITH HEAVY RAIN...OVER
VILAS...ONEIDA...AND LANGLADE COUNTIES. THESE SHOWERS AND
THUNDERSTORMS WERE KICKED OFF BY AXIS OF MODERATE INSTABILITY
EDGING NORTH OVER NC WI...SBCAPE OF AROUND 1000 J/KG...ALONG WITH
A WEAK SHORTWAVE PASSING OVER NORTHERN WI. AT THIS TIME...EXPECT
THE INTENSITY OF THE SHOWERS AND THUNDERSTORMS TO DIMINISH THIS
EVENING OVER THE NORTH...AS WE LOSE DAYTIME HEATING AND THE
SHORTWAVE SLIDES TO THE EAST.

FOR THE REST OF THE SHORT TERM PERIOD...REGION REMAINS IN NW FLOW
ALOFT...WHICH MAKES IT HARD TO GET A GOOD HANDLE ON THE TIMING OF
PCPN AT THIS TIME...BUT BELIEVE THE PCPN CHANCES WILL DIMINISH
DURING THE OVERNIGHT HOURS...WITH MAYBE A FEW SHOWERS OR
THUNDERSTORMS ATTEMPTING TO PUSH INTO THE SRN OR WRN PART OF THE
CWA...DEPENDING ON LOCATION OF UPSTREAM CONVECTION.

NEXT WAVE OF ENERGY AND MOISTURE DROPS ACROSS THE REGION ON
WED...SO HAVE KEPT THE EXISTING CHANCE POPS IN AND MADE SOME MINOR
TWEAKS. NE WI SEEMS TO BE SITUATED BETWEEN THE TWO STRONGEST
PIECES OF ENERGY...WITH THE WARM FRONT STILL ATTEMPTING TO SLIDE N
ACROSS FAR SRN WI AND THE NEXT SHORT WAVE SLIDING ACROSS UPPER
MICHIGAN. BUT BELIEVE WEAK TROUGH SLIDING ACROSS THE AREA DURING
THE LATE MORN AND INTO THE AFTN WILL BRING SOME SHOWERS AND
THUNDERSTORMS TO THE AREA. INSTABILITY LOOKS TO INCREASE AHEAD OF
THE TROUGH ON WEDNESDAY...WITH CAPE VALUES RISING INTO THE
1000-1500 RANGE...WITH VALUES APPROACHING 2000 OVER CENTRAL WI
DURING THE AFTERNOON. LI VALUES ALSO INCREASE TOWARDS THE -2 TO -4
RANGE. SHEAR LOOKS TO BE PRESENT IN THE 2-6KM RANGE AND IS SIMILAR
TO TODAY...30-40KTS...WHICH SHOULD BE ENOUGH TO TILT SOME OF THE
DEVELOPING UPDRAFTS. BUT OVERALL...BELIEVE THE SEVERE THREAT IS
LIMITED.

TEMPERATURES LOOKED TO BE IN GOOD SHAPE...SO HAVE ONLY MADE MINOR
TWEAKS.

.LONG TERM...WEDNESDAY NIGHT THROUGH NEXT TUESDAY. WE MIGHT GET TO
AVOID A HEAT WAVE IF THE 12Z GFS IS CORRECT. IT HAS ONCE AGAIN
COMES UP WITH A CUTOFF LOW THAT FORMS OVER WESTERN PENNSYLVANIA ON
SATURDAY AND THEN RETROGRADES TO THE NORTHWEST EARLY NEXT WEEK. IF
THIS IS CORRECT THEN OUR FORECAST AREA WILL BE SPARED 90 DEGREE
HEAT AND HIGH HUMIDITIES THAT WERE FORECAST BY THE MODELS
YESTERDAY. THE 12Z ECMWF IS SOMEHWAT SIMILAR TO THE GFS THOUGH THE
SYSTEM PULLS EAST A LITTLE QUICKER. SO WE TRIMMED OUR TEMPERATURES
BACK ABOUT 3-5 DEGREES EARLY NEXT WEEK BUT STAYED AWAY FROM A MORE
DRASTIC CHANGE DUE TO THE INCONSISTENCIES OF THE MODELS. IN THE
SHORTER RANGE A COLD FRONT WILL MOVE ACROSS THE AREA WEDNESDAY
NIGHT AND BRING SCATTERED SHOWERS AND THUNDERSTORMS AND BE
FOLLOWED BY COOL...DRY WEATHER FOR THURSDAY AND FRIDAY.

&&

.AVIATION...EXPECT SHOWER AND THUNDERSTORM COVERAGE TO DIMINISH
THIS EVENING WITH THE LOSS OF DAYTIME HEATING. OTHERWISE...CLOUD
COVER AND POSSIBLE FOG REMAINS AN ISSUE FOR MOST SITES. THE AMOUNT
OF CLOUD COVER WITH DETERMINE THE EXTENT OF THE FOG...AND BELIEVE
THAT THE BEST CHANCES FOR CLEARING ARE ACROSS THE NORTH...SO HAVE
LOWER VISBY IN RHI TAF.
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

Hazardous weather outlook, Jul 17, 4:01 PM CDT, 3 hours 9 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
401 PM CDT TUE JUL 17 2007

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-181630-
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE-
MENOMINEE-NORTHERN OCONTO-DOOR-MARATHON-SHAWANO-WOOD-PORTAGE-
WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-WINNEBAGO-CALUMET-
MANITOWOC-SOUTHERN MARINETTE-SOUTHERN OCONTO-
401 PM CDT TUE JUL 17 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH-CENTRAL AND NORTHEAST
WISCONSIN.

.DAY ONE...TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS THIS EVENING...MAINLY SOUTH
OF A LINE FROM RHINELANDER...TO GREEN BAY...TO MANITOWOC. WIDESPREAD
SEVERE WEATHER IS NOT EXPECTED...BUT A FEW OF THE STORMS COULD
PRODUCE DAMAGING WINDS AND HAIL UP TO 1 INCH IN DIAMETER. HEAVY RAINFALL
IS ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY INTO THURSDAY.
WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...BUT A FEW OF THE STORMS
COULD PRODUCE GUSTY WINDS AND HAIL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED TO BE NECESSARY
TONIGHT...HOWEVER SPOTTERS SHOULD FORWARD ANY REPORTS OF DAMAGING
WINDS...LARGE HAIL...AND RAINFALL OVER 1 INCH TO THE NATIONAL
WEATHER SERVICE IN GREEN BAY.

LMZ521-522-541>543-564-181630-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
THE ADJOINING WISCONSIN WATERS OF LAKE MICHIGAN OUT TO MID-LAKE-
401 PM CDT TUE JUL 17 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WATERS OF CENTRAL AND
SOUTHERN GREEN BAY...AND LAKE MICHIGAN FROM ROCK ISLAND PASSAGE
TO SHEBOYGAN.

.DAY ONE...TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS TODAY AND TONIGHT...MAINLY
SOUTH OF GREEN BAY AND KEWAUNEE. WIDESPREAD SEVERE WEATHER IS NOT
EXPECTED...BUT A FEW OF THE STORMS COULD PRODUCE GUSTY WINDS AND
HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY INTO THURSDAY.
WIDESPREAD SEVERE WEATHER IS NOT EXPECTED.

SRF/RDM

In the hours before

Special weather statement, Jul 17, 3:03 PM CDT, 4 hours 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
303 PM CDT TUE JUL 17 2007

WIZ019-020-031-172030-
LANGLADE-MENOMINEE-SHAWANO-
303 PM CDT TUE JUL 17 2007

...STRONG THUNDERSTORMS MOVING THROUGH LANGLADE...MENOMINEE AND
SHAWANO COUNTIES...

AT 258 PM...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
ANTIGO...MOVING SOUTHEAST AT 10 MPH.

HAIL UP TO ONE HALF INCH IN DIAMETER...BRIEF HEAVY DOWNPOURS...ARE
POSSIBLE WITH THIS STORM.

THE THUNDERSTORM WILL BE NEAR...
  ANTIGO AROUND 310 PM...

SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

KURIMSKI

Special weather statement, Jul 17, 3:23 PM CDT, 3 hours 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
323 PM CDT TUE JUL 17 2007

WIZ019-020-031-172130-
LANGLADE-MENOMINEE-SHAWANO-
323 PM CDT TUE JUL 17 2007

...STRONG THUNDERSTORMS MOVING THROUGH LANGLADE...MENOMINEE AND
SHAWANO COUNTIES...

AT 319 PM...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
ANTIGO...MOVING SOUTHEAST AT 10 MPH.

HAIL UP TO ONE HALF INCH IN DIAMETER...WINDS GREATER THAN 40 MPH...
BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM.

THE THUNDERSTORM WILL BE NEAR...
  5 MILES WEST OF NEOPIT AROUND 430 PM...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND.

SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

KURIMSKI

Special weather statement, Jul 17, 3:28 PM CDT, 3 hours 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
328 PM CDT TUE JUL 17 2007

WIZ019-020-031-172100-
LANGLADE-MENOMINEE-SHAWANO-
328 PM CDT TUE JUL 17 2007

...STRONG THUNDERSTORMS MOVING THROUGH LANGLADE...MENOMINEE AND
SHAWANO COUNTIES...

AT 323 PM...DOPPLER RADAR INDICATED TWO STRONG THUNDERSTORMS NEAR
ANTIGO...MOVING SOUTHEAST AT 20 MPH.

HAIL UP TO ONE HALF INCH IN DIAMETER...WINDS GREATER THAN 40 MPH...
BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.

THE THUNDERSTORMS WILL BE NEAR...
  NEOPIT AROUND 400 PM...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND.

SEEK SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED.

KURIMSKI

Local storm report, Jul 17, 4:17 PM CDT, 2 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
417 PM CDT TUE JUL 17 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0315 PM     TSTM WND DMG     1 N ANTIGO              45.16N 89.15W
07/17/2007                   LANGLADE           WI   LAW ENFORCEMENT

            TREES AND BRANCHES DOWN. ALSO SOME BUSINESS SIGNS BLOWN
            DOWN NEAR THE INTERSECTION OF HWYS 45 AND 64.

&&

KIECKBUSCH

Special weather statement, Jul 17, 4:35 PM CDT, 2 hours 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
435 PM CDT TUE JUL 17 2007

WIZ049-172230-
CALUMET-
INCLUDING CHILTON
435 PM CDT TUE JUL 17 2007

...FUNNEL CLOUDS REPORTED NEAR CHILTON...
THE CALUMET COUNTY SHERIFF DEPARTMENT REPORTED FUNNEL CLOUDS NEAR THE
CHILTON AREA AROUND 425 PM. THE FUNNEL CLOUDS WERE THE RESULT OF SOME
WEAK SHOWER DEVELOPMENT THAT WAS OCCURRING WHERE LAKE BREEZE BOUNDARIES
FROM LAKE WINNEBAGO AND LAKE MICHIGAN WERE INTERSECTING. CONDITIONS MAY
REMAIN FAVORABLE FOR FUNNEL CLOUD DEVELOPMENT FOR THE NEXT HOUR OR SO.
IF YOU ARE PLANNING OUTDOOR ACTIVITIES...KEEP AN EYE ON THE SKY...AND
TAKE COVER IF YOU SEE THREATENING WEATHER APPROACHING.

KIECKBUSCH
WEATHER.GOV/GREENBAY

The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 18, 1:38 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Shawano	52 min
Jul 18, 1:58 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca	47 min
Jul 18, 2:05 PM CDT	Marine Weather Statement	GRB		85 min
Jul 18, 2:30 PM CDT	Severe Thunderstorm Warning	GRB	Waupaca	45 min
Jul 18, 2:54 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Oconto	51 min
Jul 18, 3:07 PM CDT	Severe Thunderstorm Warning	GRB	Waupaca, Waushara, Winnebago	53 min
Jul 18, 3:11 PM CDT	Special Marine Warning	GRB		34 min
Jul 18, 3:39 PM CDT	Severe Thunderstorm Warning	GRB	Brown	35 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2007 Every severe thunderstorm warning in 2007

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.