Student pilot on solo flight encounters IMC after sfvr departure from spi.

Attributes
ACN	202832
Time
Date	199202
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : spi
State Reference	IL
Altitude	agl bound lower : 900 agl bound upper : 900
Environment
Flight Conditions	Special VFR
Light	Daylight
Aircraft 1
Controlling Facilities	tower : spi
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Route In Use	approach : svfr
Person 1
Affiliation	Other
Function	observation : observer other personnel other
Qualification	pilot : cfi pilot : commercial
Experience	flight time last 90 days : 50 flight time total : 1700 flight time type : 500
ASRS Report	202832
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : student
Events
Anomaly	inflight encounter : vfr in imc inflight encounter : weather non adherence : far
Independent Detector	other flight crewa
Resolutory Action	flight crew : exited adverse environment
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

At mid-morning I signed my student off for a cross country to springfield. At the time the WX was currently (and forecasted) VFR. Later that afternoon a trough moved in and the WX dropped below VFR as my student landed. He then called the airport and was told to depart special VFR since the sky was clear 10 mi south. The student obtained a special VFR clearance and departed. En route the student encountered IMC and descended to VMC. The flight ended without further incident.

Original NASA ASRS Text

Title: STUDENT PLT ON SOLO FLT ENCOUNTERS IMC AFTER SFVR DEP FROM SPI.

Narrative: AT MID-MORNING I SIGNED MY STUDENT OFF FOR A CROSS COUNTRY TO SPRINGFIELD. AT THE TIME THE WX WAS CURRENTLY (AND FORECASTED) VFR. LATER THAT AFTERNOON A TROUGH MOVED IN AND THE WX DROPPED BELOW VFR AS MY STUDENT LANDED. HE THEN CALLED THE ARPT AND WAS TOLD TO DEPART SPECIAL VFR SINCE THE SKY WAS CLR 10 MI S. THE STUDENT OBTAINED A SPECIAL VFR CLRNC AND DEPARTED. ENRTE THE STUDENT ENCOUNTERED IMC AND DSNDED TO VMC. THE FLT ENDED WITHOUT FURTHER INCIDENT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.